| No. | Class | F.M. Whyte | Gauge | Railroad Line | Location | Status | Builder Info | Notes |
|---|
| 1 | | 0-6-0T | 4'-8½" | National Coal Board | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | Hunslet Engine Co. #3781, 1952 | Converted from an 0-6-0ST in 1994. Named Thomas. |
| 4464 (60019) | A4 | 4-6-2 | 4'-8½" | LNER (NULL) | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | LNER Doncaster Works #1866, 12/1937 | Owned by Locomotive Services Ltd. Named Bittern. |
| 925 | V | 4-4-0 | 4'-8½" | Southern (NULL) | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | SR Eastleigh Works, 1934 | Named Cheltenham. |
| 92212 | 9F | 2-10-0 | 4'-8½" | BR (NULL) | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | BR Swindon Works, 7/1959 | Owned by Locomotive Services Ltd. |
| 34007 | | 4-6-2 | 4'-8½" | BR (NULL) | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | SR Brighton Works, 8/1945 | Named Wadebridge. |
| 45379 | 5MT (5) | 4-6-0 | 4'-8½" | BR (NULL) | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | Sir W.G. Armstrong Whitworth & Co. #1435, 7/1937 | |
| 850 | LN | 4-6-0 | 4'-8½" | Southern (NULL) | Watercress Line (Mid Hants Railway), Alresford, ENG | operational | SR Eastleigh Works, 8/1926 | Named Lord Nelson. |
| 6 | | 0-4-0T | 24" | Minas y Ferrocarril de Utrillas (NULL) | South Tynedale Railway, Alston, ENG | operational | Henschel & Son #19047, 1918 | Named Thomas Edmondson. |
| | 0-6-2ST | 24" | Harrogate Gas Works (NULL) | South Tynedale Railway, Alston, ENG | operational | Thomas Green & Son #441, 1908 | Named Barber. |
| | 0-4-0ST | 24" | Cliffe Hill Mineral Railway (NULL) | Amberley Museum & Heritage Centre, Amberley, ENG | operational | W.G. Bagnall #2067, 1917 | Named Peter. |
| | 2-4-0T | 24" | Groudle Glen Railway (NULL) | Amberley Museum & Heritage Centre, Amberley, ENG | operational | W.G. Bagnall #1781, 1905 | Named Polar Bear. |
| | 0-4-0ST | 24" | Cliffe Hill Mineral Railway (NULL) | Amerton Railway, Amerton, ENG | operational | W.G. Bagnall #1491, 1897 | Named Isabel. |
| | 0-4-0ST | 24" | Statfold Barn Railway (NULL) | Amerton Railway, Amerton, ENG | operational | Hunslet Engine Co. #3905, 2008 | Named Jennie. Previously named Howard. |
| | 0-4-0WT | 18" | John Knowles (NULL) | Leeds Industrial Museum at Armley Mills, Armley Mills, ENG | operational | Hunslet Engine Co. #684, 1898 | Named Jack. |
| 8 | | 2-6-2T | 15" | Bure Valley Railway (NULL) | Bure Valley Railway, Aylsham, ENG | operational | Winson Engineering, 1997 | Named John of Gaunt. Previously named Thunder. |
| 9 | | 2-6-4T | 15" | Bure Valley Railway (NULL) | Bure Valley Railway, Aylsham, ENG | operational | Winson Engineering, 1993 | Named Mark Timothy. |
| 7 | | 2-6-2 | 15" | Bure Valley Railway (NULL) | Bure Valley Railway, Aylsham, ENG | operational | Winson Engineering, 1994 | Named Spitfire. |
| 1 | | 2-6-4T | 15" | Bure Valley Railway (NULL) | Bure Valley Railway, Aylsham, ENG | operational | Guest Engineering & Maintenance Co., 1964 | Named Wroxham Broad. Previously named Tracey Bo. |
| | 4wG | 4'-8½" | Pockerley Waggonway (NULL) | Beamish Museum, Beamish, ENG | operational | Alan Keef, 2006 | Replica. Named Puffing Billy. |
| 1 | | 4wG | 4'-8½" | Locomotion Trust (NULL) | Beamish Museum, Beamish, ENG | operational | Locomotion Enterprises, 1975 | Replica. Named Locomotion. |
| | 0-4-0VBT | 4'-8½" | Dorking Greystone Lime Co. (NULL) | Beamish Museum, Beamish, ENG | operational | Head Wrightson & Co., 1871 | |
| | | 4'-8½" | Penrhyn Slate Quarries | Beamish Museum, Beamish, ENG | stored | Hunslet (Leeds) #996, 1909 | Run by the Moseley Railway Trust. Named Edward Sholto. From Illinois |
| | 6wG | 4'-8½" | Pockerley Waggonway (NULL) | Beamish Museum, Beamish, ENG | operational | Alan Keef, 2001 | Replica. Named Steam Elephant. |
| 18 | | 0-4-0WT | 4'-8½" | Londonberry Railway (NULL) | Beamish Museum, Beamish, ENG | operational | Lewin's Engineering Works #683, 1877 | |
| | 0-4-0WT | 24" | Rio Negro Dam (NULL) | Devon Railway Centre, Bickleigh, ENG | operational | Orenstein & Koppel #5744, 1912 | |
| 15 (71529) | | 0-6-0ST | 4'-8½" | War Dept. (NULL) | Avon Valley Railway, Bitton, ENG | operational | Andrew Barclay Sons & Co. #2183, 1945 | Named Earl David. |
| L.150 (5521) | 4575 | 2-6-2T | 4'-8½" | London Transport (NULL) | Avon Valley Railway, Bitton, ENG | operational | GWR Swindon Works, 1927 | |
| TKh49 | 0-6-0T | 4'-8½" | Skawina Metal Works (NULL) | Swindon & Cricklade Railway, Blunsdon, ENG | operational | Fablok #3135, 1953 | Named Spartan. |
| | 0-6-0ST | 4'-8½" | National Coal Board (NULL) | Foxfield Railway, Blythe Bridge, ENG | operational | Hunslet Engine Co. #3694, 1950 | Named Whiston. |
| | 0-4-0CT | 4'-8½" | Shelton Iron & Steel Co. (NULL) | Foxfield Railway, Blythe Bridge, ENG | operational | Dübs & Co. (Scotland) #4101, 1901 | Only operational crane tank steam locomotive in the world. Informally named Dubsy. |
| | 0-6-0WT | 4'-8½" | Haydock Collieries | Foxfield Railway, Blythe Bridge, ENG | operational | Haydock Foundry, 1874 | Named Bellerophon. Owned by the Vintage Carriages Trust. |
| 2 | | 0-6-0ST | 4'-8½" | National Coal Board (NULL) | Foxfield Railway, Blythe Bridge, ENG | operational | W.G. Bagnall #3059, 1954 | Named Florence. |
| 2 | | 0-4-0ST | 4'-8½" | Kent Electric Power Co. (NULL) | Foxfield Railway, Blythe Bridge, ENG | operational | W.G. Bagnall #2842, 1946 | |
| | 0-4-0ST | 4'-8½" | Beyer, Peacock & Co. (NULL) | Foxfield Railway, Blythe Bridge, ENG | operational | Beyer, Peacock & Co. #1827, 1879 | |
| 30120 (120) | T9 | 4-4-0 | 4'-8½" | BR (NULL) | Bodmin & Wenford Railway, Bodmin, ENG | operational | London & South Western Railway Nine Elms Works #572, 1899 | |
| | 0-4-0ST | 4'-8½" | Port of Par (NULL) | Bodmin & Wenford Railway, Bodmin, ENG | operational | W.G. Bagnall #2572, 1937 | Named Judy. |
| 4247 | 4200 | 2-8-0T | 4'-8½" | GWR (NULL) | Bodmin & Wenford Railway, Bodmin, ENG | operational | GWR Swindon Works #2637, 1916 | |
| 30587 (3298) | 0298 | 2-4-0WT | 4'-8½" | BR (NULL) | Bodmin & Wenford Railway, Bodmin, ENG | operational | Beyer, Peacock & Co. #1412, 1874 | |
| 4612 | 5700 | 0-6-0PT | 4'-8½" | GWR (NULL) | Bodmin & Wenford Railway, Bodmin, ENG | operational | GWR Swindon Works, 1942 | |
| 6435 | 6400 | 0-6-0PT | 4'-8½" | BR (NULL) | Bodmin & Wenford Railway, Bodmin, ENG | operational | GWR Swindon Works, 1937 | |
| | 0-4-2T | 12¼" | Exmoor Steam Railway (NULL) | Exmoor Steam Railway, Bratton Fleming, ENG | private operational | Exmoor Steam Railway Bratton Fleming Works #330, 2006 | Named Lorna Doone. |
| | 0-4-2T+T | 12¼" | Exmoor Steam Railway (NULL) | Exmoor Steam Railway, Bratton Fleming, ENG | private operational | Exmoor Steam Railway Bratton Fleming Works #299, 1995 | Named Denzil. |
| | 2-6-2 | 12¼" | Exmoor Steam Railway (NULL) | Exmoor Steam Railway, Bratton Fleming, ENG | private operational | Exmoor Steam Railway Bratton Fleming Works #325, 2009 | Named Black Beauty. |
| | 0-4-2T | 15" | Exmoor Steam Railway | Exmoor Steam Railway, Bratton Fleming, ENG | private operational | Exmoor Steam Railway Bratton Fleming Works #302, 1997 | Named Ruby (was named Dennis). Built as 12 1/4 inch gauge. |
| D249 | | 0-4-0WT | 4'-8½" | Fairfield-Mabey (NULL) | Flour Mill Ltd, Bream, ENG | private operational | Kerr, Stuart & Co. #3063, 1918 | Named Willy. |
| 10 | | 0-4-2T | 24" | Sena Sugar Estates (NULL) | Bredgar & Wormshill Light Railway, Bredgar, ENG | private operational | John Fowler & Co. #13573, 1912 | Named Zambezi. |
| 7 | | 0-4-2T | 24" | Invicta Mill (NULL) | Bredgar & Wormshill Light Railway, Bredgar, ENG | private operational | Decauville #246, 1897 | Named Victory. |
| 4 | | 0-4-0ST | 24" | Ministry of Munitions (NULL) | Bredgar & Wormshill Light Railway, Bredgar, ENG | private operational | W.G. Bagnall #2088, 1919 | Named Armistice. |
| | 0-4-0ST | 24" | Dinorwic Slate Quarry (NULL) | Bredgar & Wormshill Light Railway, Bredgar, ENG | private operational | Hunslet Engine Co. #1429, 1922 | Named Lady Joan. |
| 6 | | 0-4-0WT | 24" | Penrhyn Quarry Railway (NULL) | Bredgar & Wormshill Light Railway, Bredgar, ENG | private operational | Orenstein & Koppel #5668, 1912 | Named Eigiau. |
| 1 | | 0-4-0WT | 24" | Norddeutsche Affinerie (NULL) | Bredgar & Wormshill Light Railway, Bredgar, ENG | private operational | Berliner Maschinenbau #9124, 1927 | Named Bronhilde. |
| | 0-4-0ST | 24" | London Museum of Water & Steam (NULL) | London Museum of Water & Steam, Brentford, ENG | operational | Hunslet Engine Co. #3906, 2009 | Named Thomas Wickstead. |
| 2 | | 0-4-0PT+T | 24" | Nursery Railway (NULL) | Bressingham Steam & Gardens, Bressingham, ENG | operational | Bressingham Steam Preservation Trust #2, 2009 | Named Bevan. |
| 377 | 21c | 2-6-0 | 4'-8½" | Norwegian State Railways (NULL) | Bressingham Steam & Gardens, Bressingham, ENG | operational | Nydqvist & Holm #1164, 1919 | Named King Haakon VII. |
| | 2-6-2T | 15" | Windmill Farm Railway (NULL) | Bressingham Steam & Gardens, Bressingham, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #311, 2001 | Named St. Christopher. |
| 994 | | 0-4-0ST | 24" | Penrhyn Quarry Railway (NULL) | Bressingham Steam & Gardens, Bressingham, ENG | operational | Hunslet Engine Co. #994, 1909 | Named George Sholto. Previously named Bill Harvey. |
| 3205 | 2251 | 0-6-0 | 4'-8½" | BR (NULL) | South Devon Railway, Buckfastleigh, ENG | operational | GWR Swindon Works, 1946 | |
| 1369 | 1366 | 0-6-0PT | 4'-8½" | GWR (NULL) | South Devon Railway, Buckfastleigh, ENG | operational | GWR Swindon Works, 1934 | |
| 151 | | 0-4-0VBT | 84¼" | GWR (NULL) | South Devon Railway, Buckfastleigh, ENG | display | Sara & Co. #2180, 1868 | Only surviving commercial Brunel gauge steam locomotive in the UK. Named Tiny. |
| 6412 | 6400 | 0-6-0PT | 4'-8½" | BR (NULL) | South Devon Railway, Buckfastleigh, ENG | operational | GWR Swindon Works, 1934 | |
| L.92 (5786) | 5700 | 0-6-0PT | 4'-8½" | London Transport (NULL) | South Devon Railway, Buckfastleigh, ENG | operational | GWR Swindon Works, 1929 | |
| 8 (47) | | 0-4-0ST | 4'-8½" | Royal Ordnance Factory 8 (NULL) | Mangapps Railway Museum, Burnham-on-Crouch, ENG | operational | Andrew Barclay Sons & Co. #2157, 1943 | From Nat'l Coal Board. Named Fambridge. |
| 293 | | 0-4-0ST | 4'-8½" | N. Greening (NULL) | Chasewater Railway, Burntwood, ENG | operational | Andrew Barclay Sons & Co. #1223, 1911 | |
| 1 | | 0-6-0ST | 4'-8½" | National Coal Board (NULL) | Chasewater Railway, Burntwood, ENG | operational | Hunslet Engine Co. #3783, 1953 | Named Darfield. |
| 10 | 4-4-2 | 15" | Dreamland Miniature Railway (NULL) | Windmill Animal Farm, Burscough, ENG | operational | Bassett-Lowke, 1909 | Named Red Dragon. |
| 80080 | 4MT | 2-6-4T | 4'-8½" | BR (NULL) | East Lancashire Railway, Bury, ENG | operational | BR Brighton Works, 1954 | |
| 75008 | | 0-6-0ST | 4'-8½" | War Dept. (NULL) | East Lancashire Railway, Bury, ENG | operational | Hunslet Engine Co. #2857, 1943 | Named Swiftsure. |
| | 0-4-0ST | 4'-8½" | Yates & Duxbury (NULL) | East Lancashire Railway, Bury, ENG | operational | Peckett & Sons #1370, 1915 | Named May. |
| 132 | | 0-6-0ST | 4'-8½" | War Dept. (NULL) | East Lancashire Railway, Bury, ENG | operational | Hunslet Engine Co. #3163, 1953 | Named Sapper. |
| 42765 (13065) | 5MT (5) | 2-6-0 | 4'-8½" | BR | East Lancashire Railway, Bury, ENG | operational | LMS Crewe Works #5757, 1927 | |
| 1 (32) | | 0-6-0T | 4'-8½" | Manchester Ship Canal (NULL) | East Lancashire Railway, Bury, ENG | operational | Hudswell, Clarke & Co. #680, 1903 | Named Gothenburg. Fictionally named Thomas. |
| 4472 (60103) | A3 (A1) | 4-6-2 | 4'-8½" | LNER (BR) | Riley & Son (E) Ltd, Bury, ENG | operational | LNER Doncaster Works, 2/1923 | Owned by the Nat'l Railway Museum. First steam locomotive in the world confirmed to have reached 100 mph (1934). Named Flying Scotsman. Cameoed in Thomas and Friends. |
| 46233 (6233) | | 4-6-2 | 4'-8½" | BR (NULL) | Midland Railway - Butterley, Butterley, ENG | operational | LMS Crewe Works, 1938 | Named Duchess of Sutherland. |
| 47327 (23) | 3F | 0-6-0T | 4'-8½" | LMS (NULL) | Midland Railway - Butterley, Butterley, ENG | operational | North British Locomotive Co. #23406, 1926 | Fictionally named Jinty. |
| | 0-4-2IST | 24" | Golden Valley Light Railway (NULL) | Midland Railway - Butterley, Butterley, ENG | operational | T.D.A. Civil #1, 1997 | Named Joan. |
| 73129 | 5MT | 4-6-0 | 4'-8½" | BR (NULL) | Midland Railway - Butterley, Butterley, ENG | operational | BR Derby Works, 1956 | |
| 1163 | | 0-4-0ST | 4'-8½" | Whitehead Hill & Co. (NULL) | Midland Railway - Butterley, Butterley, ENG | operational | Peckett & Sons #1163, 1908 | Named Whitehead. Fictionally named Taffy. |
| 45690 (5690) | | 4-6-0 | 4'-8½" | BR (NULL) | West Coast Railways Carnforth, Carnforth, ENG | private operational | LMS Crewe Works #288, 1936 | Named Leander. |
| 46115 (6115) | | 4-6-0 | 4'-8½" | BR (NULL) | West Coast Railways Carnforth, Carnforth, ENG | private operational | North British Locomotive Co. #23610, 1927 | Named Scots Guardsman. |
| 5699 (45699) | | 4-6-0 | 4'-8½" | LMS (NULL) | West Coast Railways Carnforth, Carnforth, ENG | private operational | LMS Crewe Works #297, 1936 | Named Galatea. |
| 45231 (5231) | 5MT (5) | 4-6-0 | 4'-8½" | BR | West Coast Railways Carnforth, Carnforth, ENG | private operational | Sir W.G. Armstrong Whitworth & Co. #1286, 1936 | Named The Sherwood Forester. |
| 190 | | 0-6-0ST | 4'-8½" | War Dept. (NULL) | Colne Valley Railway, Castle Hedingham, ENG | operational | Hunslet Engine Co. #3790, 1952 | |
| | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Northampton & Lamport Railway, Chapel Brampton, ENG | operational | Peckett & Sons #2104, 1948 | |
| | 0-4-0ST | 4'-8½" | South Wales Warehouses (NULL) | Historic Dockyard, Chatham, Chatham, ENG | operational | Peckett & Sons #1903, 1936 | Named Little Lady. |
| 361 | | 0-4-0ST | 4'-8½" | Ministry of Defence (NULL) | Historic Dockyard, Chatham, Chatham, ENG | operational | Robert Stephenson & Hawthorns #7042, 1941 | Named Ajax. |
| TKh49 | 0-6-0 | 4'-8½" | Spa Valley | Churnet Valley Railway, Cheddleton, ENG | stored | | Owned by the TKh Support Group |
| S160 | 2-8-0 | 4'-8½" | USATC | Churnet Valley Railway, Cheddleton, ENG | operational | #6046 | Privately owned |
| 8F | 2-8-0 | 4'-8½" | | Churnet Valley Railway, Cheddleton, ENG | restoration | #48173 | Privately owned |
| S160 | 2-8-0 | 4'-8½" | USATC | Churnet Valley Railway, Cheddleton, ENG | operational | #5197 | Privately owned |
| | 0-4-0ST | 4'-8½" | Keighley & Worth Valley | Churnet Valley Railway, Cheddleton, ENG | stored | Andrew Barclay #2226 | Named Katie; From a garden center |
| TKh49 | 0-6-0T | 4'-8½" | (NULL) | Churnet Valley Railway, Cheddleton, ENG | operational | Fablok #2944, 1952 | Named Hotspur. |
| | 0-4-0T | 15" | Eaton Railway (NULL) | Eaton Estate, Chester, ENG | private operational | FMB Engineering Co., 1994 | Replica. Named Katie. |
| | 0-4-2ST | 24" | Penrhyn Quarry Railway (NULL) | Apedale Valley Light Railway, Chesterton, ENG | operational | Kerr, Stuart & Co. #2395, 1917 | Run by the Moseley Railway Trust. Named Stanhope. |
| | 0-6-0WT | 24" | Ashanti Goldfields Corp. (NULL) | Apedale Valley Light Railway, Chesterton, ENG | operational | Hudswell, Clarke & Co. #1238, 1916 | Run by the Moseley Railway Trust. |
| 3014 | | 0-6-0T | 24" | French Army (NULL) | Apedale Valley Light Railway, Chesterton, ENG | operational | Kerr, Stuart & Co. #3014, 1916 | Run by the Moseley Railway Trust. |
| 4 | | 0-4-0+0-4-0TG | 15" | Kirklees Light Railway (NULL) | Kirklees Light Railway, Clayton West, ENG | operational | Brian Taylor #12, 2000 | Named Owl. |
| 2 | | 0-6-4ST | 15" | Kirklees Light Railway (NULL) | Kirklees Light Railway, Clayton West, ENG | operational | Brian Taylor, 1991 | Named Badger. |
| 3 | | 0-4-0+0-4-0T | 15" | Kirklees Light Railway (NULL) | Kirklees Light Railway, Clayton West, ENG | operational | Brian Taylor, 1998 | Named Hawk. |
| | 2-6-2T | 15" | Kirklees Light Railway (NULL) | Kirklees Light Railway, Clayton West, ENG | operational | Brian Taylor, 1987 | Named Fox. |
| 24 | | 2-6-2 | 15" | Cleethorpes Coast Light Railway (NULL) | Cleethorpes Coast Light Railway, Cleethorpes, ENG | operational | Fairbourne Railway Fairbourne Works #4, 1990 | |
| 6284 | O4 | 2-8-0 | 15" | Cleethorpes Coast Light Railway (NULL) | Cleethorpes Coast Light Railway, Cleethorpes, ENG | operational | T. Turner, 2009 | Completed by Ray Crome and Roger Loxley. |
| | 2-6-2T | 15" | Perrygrove Railway (NULL) | Perrygrove Railway, Coleford, ENG | operational | Alan Keef #5360, 2008 | Named Lydia. |
| | 0-4-2 | 15" | Heatherslaw Light Railway (NULL) | Heatherslaw Light Railway, Cornhill-on-Tweed, ENG | operational | Ravenglass & Eskdale Railway Ravenglass Works, 1989 | Named Lady Augusta. |
| | 2-6-0T+T | 15" | Heatherslaw Light Railway (NULL) | Heatherslaw Light Railway, Cornhill-on-Tweed, ENG | operational | Neville Smith, 2010 | Completed by Alan Keef. Named Bunty. |
| 2 | | 0-4-0ST | 4'-8½" | United Steel Companies (NULL) | Rocks by Rail: the Living Ironstone Museum, Cottesmore, ENG | operational | Andrew Barclay Sons & Co. #1931, 1927 | |
| | 0-4-0ST | 4'-8½" | Cottesmore Ironstone Quarry (NULL) | Rocks by Rail: the Living Ironstone Museum, Cottesmore, ENG | operational | Andrew Barclay Sons & Co. #2088, 1940 | Named Sir Thomas Royden. |
| 1719 | | 0-4-0ST | 4'-8½" | Hurlford Fireclay Works (NULL) | East Somerset Railway, Cranmore, ENG | operational | Andrew Barclay Sons & Co. #1719, 1920 | Named Lady Nan. |
| 5637 | 5600 | 0-6-2T | 4'-8½" | GWR (NULL) | East Somerset Railway, Cranmore, ENG | operational | GWR Swindon Works, 1925 | |
| 60163 | A1 | 4-6-2 | 4'-8½" | BR (NULL) | A1 Steam Locomotive Trust, Darlington, ENG | private operational | A1 Steam Locomotive Trust #2195, 2008 | First brand-new main line steam locomotive built in the UK since 1960. Named Tornado. |
| 1 | | 4wG | 56" | Stockton & Darlington Railway (NULL) | Head of Steam: Darlington Railway Museum, Darlington, ENG | display | Robert Stephenson & Co., 1825 | First steam locomotive in the world to carry passengers on a public rail line. Named Locomotion. |
| 4144 | 5101 | 2-6-2T | 4'-8½" | BR (NULL) | Didcot Railway Centre, Didcot, ENG | operational | GWR Swindon Works, 1946 | |
| 6023 | 6000 | 4-6-0 | 4'-8½" | BR (NULL) | Didcot Railway Centre, Didcot, ENG | operational | GWR Swindon Works, 1930 | Named King Edward II. |
| | 2-2-2 | 84¼" | GWR (NULL) | Didcot Railway Centre, Didcot, ENG | Overhaul | Fire Fly Project, 2005 | Replica. Will become the only operational Brunel gauge steam locomotive in the world upon completion of its overhaul. Named Fire Fly. |
| 3650 | 5700 | 0-6-0PT | 4'-8½" | GWR (NULL) | Didcot Railway Centre, Didcot, ENG | operational | GWR Swindon Works, 1939 | |
| 9 | | 0-4-0Tram | 24" | (NULL) | North Ings Farm Museum, Dorrington, ENG | operational | T. Hall #1859401, 1994 | Named Swift. |
| 2 | | 0-4-0ST+T | 15" | Sherwood Forest Railway (NULL) | Sherwood Forest Railway, Edwinstowe, ENG | operational | K. Hardy #2, 1998 | Named Pet. |
| 1 | | 0-4-0ST+T | 15" | Sherwood Forest Railway (NULL) | Sherwood Forest Railway, Edwinstowe, ENG | operational | K. Hardy #1, 1991 | Named Smokey Joe. |
| 10 | | 0-4-0VBT | 4'-8½" | Kent & East Sussex Railway (NULL) | Elsecar Heritage Railway, Elsecar, ENG | operational | Sentinel Waggon Works #6807, 1928 | Named Gervase. |
| 16 | | 0-6-0ST | 4'-8½" | Acton Hall Colliery (NULL) | Embsay & Bolton Abbey Steam Railway, Embsay, ENG | operational | Hunslet Engine Co. #2705, 1945 | Named Beatrice. |
| 47 | | 0-6-0ST | 4'-8½" | National Coal Board (NULL) | Embsay & Bolton Abbey Steam Railway, Embsay, ENG | operational | Robert Stephenson & Hawthorns #7849, 1955 | Named Moorbarrow. |
| | 0-6-2T | 12¼" | Exbury Gardens Railway (NULL) | Exbury Gardens & Steam Railway, Exbury, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #315, 2001 | Named Rosemary. |
| | 0-6-2T | 12¼" | Exbury Gardens Railway (NULL) | Exbury Gardens & Steam Railway, Exbury, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #316, 2002 | Name Naomi. |
| | 2-6-0 | 12¼" | Exbury Gardens Railway (NULL) | Exbury Gardens & Steam Railway, Exbury, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #326, 2008 | Named Mariloo. |
| 31 | | 0-6-0ST | 4'-8½" | Sir Robert McAlpine & Sons | Fawley Hill, Fawley, ENG | private operational | Hudswell, Clarke & Co #1026, 1913 | The Fawley HIll Railway has a maximum gradient of 1:13, the steepest in Great Britain. |
| 3 | | 0-4-0ST | 24" | Provan Gas Works (NULL) | Kempton Steam Railway, Feltham, ENG | operational | Andrew Barclay Sons & Co. #984, 1903 | Named Darent. |
| 1016 | Hr1 | 4-6-2 | 60" | Valtion Rautatiet/State Railways (Finland) (NULL) | Fifield Central, Fifield, ENG | private operational | Tampella Locomotive Works #946, 1955 | Only operational broad gauge steam locomotive in Great Britain. Named Lady Patricia. |
| | 4wWT | 4'-8½" | Vickers Armstrong (NULL) | Fifield Central, Fifield, ENG | overhaul | Aveling & Porter #8800, 1917 | Technically very similar to a traction engine/steam tractor. Named Sir Vincent. |
| | 0-4-0ST | 4'-8½" | Holborough Cement Co. (NULL) | Fifield Central, Fifield, ENG | private operational | Peckett & Sons #1756, 1928 | Named Hornpipe. |
| 22 | | 0-4-0ST | 4'-8½" | National Coal Board (NULL) | Bowes Railway, Gateshead, ENG | operational | Andrew Barclay Sons & Co. #2274, 1949 | |
| W8 (46) | A1X | 0-6-0T | 4'-8½" | Southern (NULL) | Isle of Wight Steam Railway, Havenstreet, ENG | operational | London, Brighton & South Coast Railway Brighton Work, 1876 | Named Freshwater. Previously named Newington. |
| 192 | | 0-6-0ST | 4'-8½" | War Dept. (NULL) | Isle of Wight Steam Railway, Havenstreet, ENG | operational | Hunslet Engine Co. #3792, 1953 | Named Waggoner. |
| W11 (40) | A1X | 0-6-0T | 4'-8½" | Southern (NULL) | Isle of Wight Steam Railway, Havenstreet, ENG | operational | London, Brighton & South Coast Railway Brighton Work, 1878 | Named Newport. Previously named Brighton. |
| W24 | O2 | 0-4-4T | 4'-8½" | BR (NULL) | Isle of Wight Steam Railway, Havenstreet, ENG | operational | London & South Western Railway Nine Elms Works #341, 1891 | Named Calbourne. |
| 17 | | 0-6-0T | 4'-8½" | Carron Iron Co. (NULL) | Lakeside & Haverthwaite Railway, Haverthwaite, ENG | operational | Andrew Barclay Sons & Co. #1245, 1911 | Informally named Thomas. |
| 2996 | | 0-6-0ST | 4'-8½" | British Motor Corp. (NULL) | Lakeside & Haverthwaite Railway, Haverthwaite, ENG | operational | W.G. Bagnall #2996, 1951 | Named Victor. |
| 14 | | 0-6-0ST | 4'-8½" | Preston Docks (NULL) | Lakeside & Haverthwaite Railway, Haverthwaite, ENG | operational | W.G. Bagnall #2682, 1942 | Named Princess. |
| 42073 | 4MT | 2-6-4T | 4'-8½" | BR (NULL) | Lakeside & Haverthwaite Railway, Haverthwaite, ENG | operational | BR Brighton Works, 1950 | |
| 90733 (79257) | 8F | 2-8-0 | 4'-8½" | BR (NULL) | Keighley & Worth Valley Railway, Haworth, ENG | operational | Vulcan Foundry #5200, 1/1945 | |
| 75078 | 4MT | 4-6-0 | 4'-8½" | BR (NULL) | Keighley & Worth Valley Railway, Haworth, ENG | operational | BR Swindon Works, 1956 | |
| 5820 | S160 | 2-8-0 | 4'-8½" | USA Transportation Corps (NULL) | Keighley & Worth Valley Railway, Haworth, ENG | operational | Lima #8758, 1945 | Named Big Jim. |
| 43924 (3924) | 4F (3835) | 0-6-0 | 4'-8½" | BR (NULL) | Keighley & Worth Valley Railway, Haworth, ENG | operational | Midland Railway Derby Works, 10/1920 | |
| 34092 | | 4-6-2 | 4'-8½" | BR (NULL) | Keighley & Worth Valley Railway, Haworth, ENG | operational | BR Brighton Works, 9/1949 | Named City of Wells. |
| 21 (34) | | 0-4-0WT | 24" | Minas y Ferrocarril de Utrillas (NULL) | West Lancashire Light Railway, Hesketh Bank, ENG | operational | Orenstein & Koppel #6641, 1913 | Named Montalban. |
| 22 (35) | | 0-4-0WT | 24" | Minas y Ferrocarril de Utrillas (NULL) | West Lancashire Light Railway, Hesketh Bank, ENG | operational | Orenstein & Koppel #2378, 1907 | Named Utrillas. |
| 9 | | 0-6-0WT | 24" | Carrieres de la Valee-Meureuse (NULL) | West Lancashire Light Railway, Hesketh Bank, ENG | operational | Kerr, Stuart & Co. #2045, 1915 | Named Joffre. |
| 2 | | 2-4-2T | 12¼" | Newchapel, Horne & Burstow Grand Junction Railway (NULL) | Newchapel, Horne & Burstow Grand Junction Railway, Horne, ENG | private operational | | Builder info unknown. Probably built by Exmoor Steam Railway in the 1990s. Named Exmoor. |
| | 0-4-0Tram | 24" | Telford Town Tramway (NULL) | Telford Steam Railway, Horsehay, ENG | operational | Alan Keef, 1979 | Named Thomas. |
| 5619 | 5600 | 0-6-2T | 4'-8½" | GWR (NULL) | Telford Steam Railway, Horsehay, ENG | operational | GWR Swindon Works, 1925 | |
| | 0-4-0ST | 4'-8½" | Courtaulds (NULL) | Telford Steam Railway, Horsehay, ENG | operational | Peckett & Sons #1722, 1926 | Named Rocket. |
| 1054 (7799) | | 0-6-2T | 4'-8½" | London & North Western Railway (NULL) | Ingrow Loco, Ingrow, ENG | operational | London & North Western Railway Crewe Works #2979, 1888 | Run by the Bahamas Locomotive Society. Named Coal Tank. |
| 1704 | | 0-6-0T | 4'-8½" | Associated Portland Cement Manufacturers (NULL) | Ingrow Loco, Ingrow, ENG | operational | Hudswell, Clarke & Co. #1704, 1938 | Run by the Bahamas Locomotive Society. Named Nunlow. |
| 43106 | 4MT | 2-6-0 | 4'-8½" | BR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | BR Darlington Works #2148, 1951 | |
| 34053 | | 4-6-2 | 4'-8½" | BR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | SR Brighton Works, 1/1947 | Named Sir Keith Park. |
| 7812 | 7800 | 4-6-0 | 4'-8½" | BR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | GWR Swindon Works, 1/1939 | Named Erlestoke Manor. |
| 2857 | 2800 | 2-8-0 | 4'-8½" | GWR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | GWR Swindon Works #2763, 1918 | |
| 397 | | 0-4-4T | 4'-8½" | Duke of Sutherland | Severn Valley Railway, Kidderminster, ENG | restoration | Sharp Stewart & Sons #4085, 1898 | Named Dunrobin, from England, then Ft Steele, BC, CAN, then England again. |
| 1501 | 1500 | 0-6-0PT | 4'-8½" | BR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | BR Swindon Works, 1949 | |
| 34027 | | 4-6-2 | 4'-8½" | BR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | SR Brighton Works, 4/1946 | Named Taw Valley. |
| 4566 | 4500 | 2-6-2T | 4'-8½" | BR (NULL) | Severn Valley Railway, Kidderminster, ENG | operational | GWR Swindon Works, 1924 | |
| | 0-4-0ST | 4'-8½" | South Durham & Lancashire Union Railway (NULL) | Stainmore Railway Co., Kirkby Stephen, ENG | operational | Peckett & Sons #2084, 1948 | Named F.C. Tingey. |
| 89 | | 0-2-2VBT | 23½" | Launceston Steam Railway (NULL) | Launceston Steam Railway, Launceston, ENG | operational | C. Parmenter, 2004 | Named Perseverance. |
| | 0-4-0ST | 23½" | Dinorwic Slate Quarry (NULL) | Launceston Steam Railway, Launceston, ENG | operational | Hunslet Engine Co. #679, 1898 | Named Covertcoat. |
| | 0-4-0ST | 23½" | Dorothea Quarry (NULL) | Launceston Steam Railway, Launceston, ENG | operational | Hunslet Engine Co. #763, 1901 | Named Dorothea. |
| | 0-4-0ST | 23½" | Penrhyn Quarry Railway (NULL) | Launceston Steam Railway, Launceston, ENG | operational | Hunslet Engine Co. #317, 1883 | Named Lilian. |
| | 0-4-0VBT | 24" | (NULL) | Alan Keef Ltd, Lea, ENG | private operational | Alan Keef #30, 1990 | Can be seen during annual open days. Named Taffy. |
| | 0-4-0ST | 24" | Callender Cable & Construction Co. (NULL) | Alan Keef Ltd, Lea, ENG | private operational | W.G. Bagnall #2133, 1924 | Can be seen during annual open days. Named Woto. |
| L | 0-6-0ST | 4'-8½" | Associated Portland Cement Manufacturers (NULL) | Middleton Railway, Leeds, ENG | operational | Manning Wardle #1601, 1901 | Named Matthew Murray. |
| 3 (293) | | 0-6-0ST | 4'-8½" | Slough Estates (NULL) | Middleton Railway, Leeds, ENG | operational | Hudswell, Clarke & Co. #1544, 1924 | |
| 1310 | H (Y7) | 0-4-0T | 4'-8½" | North Eastern Railway (UK) (NULL) | Middleton Railway, Leeds, ENG | operational | North Eastern Railway Gateshead Works #38, 1891 | |
| 1 | | 0-4-0ST | 24" | Minworth Sewage Works | Abbey Pumping Station, Leicester, ENG | operational | W.G. Bagnall #2087, 1919 | Named Leonard |
| 778 | 10-12-D | 4-6-0PT | 24" | War Dept. (NULL) | Leighton Buzzard Railway, Leighton Buzzard, ENG | operational | Baldwin #44656, 1917 | |
| 5 | | 0-6-0WT | 24" | Likomba Development Co. (NULL) | Leighton Buzzard Railway, Leighton Buzzard, ENG | operational | Orenstein & Koppel #12740, 1936 | Named Elf. |
| 1 | | 0-4-0VBT | 24" | Pen-y-Bryn Quarry (NULL) | Leighton Buzzard Railway, Leighton Buzzard, ENG | operational | De Winton & Co., 1877 | Named Chaloner. |
| 11 | | 0-4-0WT | 24" | Solvay Alkai Works (NULL) | Leighton Buzzard Railway, Leighton Buzzard, ENG | operational | Orenstein & Koppel #5834, 1912 | Named P.C. Allen. |
| 3 | | 0-4-0T | 24" | Hoogly Docking & Engineering Co. (NULL) | Leighton Buzzard Railway, Leighton Buzzard, ENG | operational | Baguley Cars #2007, 1921 | Named Rishra. |
| 38 | | 0-4-0ST | 24" | Dinorwic Slate Quarry (NULL) | Hollycombe Working Steam Museum, Liphook, ENG | operational | Hunslet Engine Co. #638, 1895 | Named Jerry M. |
| 1 | | 0-2-2 | 4'-8½" | Liverpool & Manchester Railway | Science Museum, London, ENG | display | Robert Stephenson & Co., 1829 | Named Rocket. Winner of the 1829 Rainhill Trials. |
| | 4wG | 60" | Wylam Colliery (NULL) | Science Museum, London, ENG | display | William Hedley, 1813 | Oldest surviving steam locomotive in the world. Named Puffing Billy. |
| 5972 | 4900 | 4-6-0 | 4'-8½" | Hogwarts Railways | Warner Bros. Studio Tour London, London, ENG | operational | GWR Swindon Works, 4/1937 | Owned by West Coast Railway Co. Featured in the Harry Potter films. Named Olton Hall. Fictionally named Hogwarts Castle. |
| 6 | | 0-6-2T | 15" | Jungle Express (NULL) | Longleat Safari & Adventure Park, Longleat, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #323, 2004 | Named John Hayton. |
| 92214 | 9F | 2-10-0 | 4'-8½" | BR (NULL) | Great Central Railway, Loughborough, ENG | operational | BR Swindon Works, 10/1959 | Named Central Star. Previously named Cock o' the North. |
| 70013 | 7MT | 4-6-2 | 4'-8½" | BR (NULL) | Great Central Railway, Loughborough, ENG | operational | BR Crewe Works, 5/1951 | Named Oliver Cromwell. |
| 45305 (5305) | 5MT (5) | 4-6-0 | 4'-8½" | BR (NULL) | Great Central Railway, Loughborough, ENG | operational | Sir W.G. Armstrong Whitworth & Co. #1360, 1/1937 | Named Alderman A.E. Draper. |
| 777 (30777) | N15 | 4-6-0 | 4'-8½" | Southern (NULL) | Great Central Railway, Loughborough, ENG | operational | North British Locomotive Co. #23223, 6/1925 | Named Sir Lamiel. |
| 46521 | 2MT | 2-6-0 | 4'-8½" | BR (NULL) | Great Central Railway, Loughborough, ENG | operational | BR Swindon Works, 1953 | Fictionally named Blossom. |
| 48624 (8624) | 8F (7F) | 2-8-0 | 4'-8½" | BR (NULL) | Great Central Railway, Loughborough, ENG | operational | SR Ashford Works, 1943 | |
| 47406 (16489) | 3F | 0-6-0T | 4'-8½" | BR (NULL) | Great Central Railway, Loughborough, ENG | operational | Vulcan Foundry #3977, 1926 | |
| 2 | | 0-4-0ST | 4'-8½" | Cawdor Quarry (NULL) | Lincolnshire Wolds Railway, Ludborough, ENG | operational | Peckett & Sons #1749, 1928 | Named Fulstow. |
| 5541 | 4575 | 2-6-2T | 4'-8½" | BR (NULL) | Dean Forest Railway, Lydney, ENG | operational | GWR Swindon Works, 1928 | |
| 3806 | | 0-6-0ST | 4'-8½" | National Coal Board | Dean Forest Railway, Lydney, ENG | operational | Hunslet Engine Co. #3806, 1953 | Named Wilbert. |
| | 4-4-0T | 600 mm | Tongaat Sugar, Natal (NULL) | unknown, Woody Bay, Lynton, ENG | operational | W.G. Bagnall #2819, 1946 | Named Charles Wytock. From Lynton and Barnstaple; unsure of exact location |
| | 4wG | 36" | (NULL) | Blists Hill Victorian Town, Madeley, ENG | operational | GKN Steel Co., 1990 | "Replica of Richard Trevithick's Coalbrookdale locomotive, the world's first steam locomotive ever built (1802). No records of it successfully running exist. " |
| | 2-2-0 | 4'-8½" | Liverpool & Manchester Railway (NULL) | Manchester Museum of Science & Industry, Manchester, ENG | operational | Manchester Museum of Science and Industry #2, 1991 | Replica. Named Planet. |
| 1 | | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Manchester Museum of Science & Industry, Manchester, ENG | operational | Robert Stephenson & Hawthorns #7416, 1948 | Named Agecroft. |
| | 0-4-0ST | 4'-8½" | Redheugh Gas Works (NULL) | Tanfield Railway, Marley Hill, ENG | operational | Robert Stephenson & Hawthorns #7409, 1948 | Named Sir Cecil A. Cochrane. |
| 3 | | 0-6-0T | 4'-8½" | Beamish Colliery (NULL) | Tanfield Railway, Marley Hill, ENG | operational | Robert Stephenson & Co. #2730, 1891 | Named Twizell. |
| 2 | | 0-4-0ST | 4'-8½" | Nobel's Explosives (NULL) | Tanfield Railway, Marley Hill, ENG | operational | R. & W. Hawthorn Leslie & Co. #2859, 1911 | |
| | 0-4-2T | 600 mm | Rustenberg Platinum Mines (NULL) | Lynton & Barnstaple Railway, Martinhoe Cross, ENG | operational | W.G. Bagnall #3023, 1953 | Named Isaac. |
| 762 | E | 2-4-2T | 600mm | Southern (Lynton & Barnstaple) | Lynton & Barnstaple Railway, Martinhoe Cross, ENG | operational | Alan Keef Ltd, 2017 | Named Lyn |
| | 0-6-0T | 600 mm | French Army (NULL) | Lynton & Barnstaple Railway, Martinhoe Cross, ENG | operational | Kerr, Stuart & Co. #2451, 1915 | Named Axe. |
| 75019 | | 0-6-0ST | 4'-8½" | War Dept. (NULL) | Peak Rail, Matlock, ENG | operational | Hunslet Engine Co. #3883, 1944 | Named Lord Phil. |
| 7828 | 7800 | 4-6-0 | 4'-8½" | BR (NULL) | West Somerset Railway, Minehead, ENG | operational | BR Swindon Works, 12/1950 | Named Norton Manor. Previously named Odney Manor. |
| 4160 | 5101 | 2-6-2T | 4'-8½" | BR (NULL) | West Somerset Railway, Minehead, ENG | operational | BR Swindon Works, 1948 | |
| 6960 | 6959 | 4-6-0 | 4'-8½" | GWR | West Somerset Railway, Minehead, ENG | operational | GWR Swindon Works, 3/1944 | Named Raveningham Hall. Owned by Locomotive Services Ltd. |
| 3850 | 2884 | 2-8-0 | 4'-8½" | BR (NULL) | West Somerset Railway, Minehead, ENG | operational | GWR Swindon Works, 6/1942 | |
| 7 | | 4-6-2 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Davey, Paxman & Co. #16043, 1927 | Named Typhoon. |
| 3 | | 4-6-2 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Davey, Paxman & Co. #16040, 1926 | Named Southern Maid. |
| 10 | | 4-6-2 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Yorkshire Engine Co. #2295, 1931 | Named Dr. Syn. |
| 8 | | 4-6-2 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Davey, Paxman & Co. #16044, 1927 | Named Hurricane. |
| 4 | | 0-4-0 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Locomotivfabrik Krauss & Co. #8378, 1926 | Named The Bug. |
| 1 | | 4-6-2 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Davey, Paxman & Co., 1925 | Named Green Goddess. |
| 9 | | 4-6-2 | 15" | Romney, Hythe & Dymchurch Railway (NULL) | Romney, Hythe & Dymchurch Railway, New Romney, ENG | operational | Yorkshire Engine Co. #2294, 1931 | Named Winston Churchill. |
| A No. 5 | | 0-6-0PT | 4'-8½" | Consett Steel & Iron Co. (NULL) | Stephenson Railway Museum, North Shields, ENG | operational | Kitson & Co. #2509, 1883 | |
| 4141 | 5101 | 2-6-2T | 4'-8½" | GWR (NULL) | Epping Ongar Railway, Ongar, ENG | operational | GWR Swindon Works, 1946 | |
| 6 | | 0-4-0ST | 4'-8½" | Irlam Soap Works (NULL) | Cambrian Heritage Railways, Oswestry, ENG | operational | Peckett & Sons #2131, 1951 | Named Oliver Veltom. |
| 7827 | 7800 | 4-6-0 | 4'-8½" | BR (NULL) | Dartmouth Steam Railway & River Boat Co., Paignton, ENG | operational | BR Swindon Works, 12/1950 | Named Lydham Manor. |
| 4277 | 4200 | 2-8-0T | 4'-8½" | GWR (NULL) | Dartmouth Steam Railway & River Boat Co., Paignton, ENG | operational | GWR Swindon Works #2857, 1920 | Named Hercules. |
| 5239 | 5205 | 2-8-0T | 4'-8½" | GWR (NULL) | Dartmouth Steam Railway & River Boat Co., Paignton, ENG | operational | GWR Swindon Works, 1924 | Named Goliath. |
| 1 | | 0-4-2ST | 30" | Antigua Sugar | FMB Engineering, Petersfield, ENG | stored | Kerr, Stuart & Co (Stoke on Trent) #3025, 1917 | Named Edith, from a sugar factory in Antigua |
| 75029 | 4MT | 4-6-0 | 4'-8½" | BR (NULL) | North Yorkshire Moors Railway, Pickering, ENG | operational | BR Swindon Works, 1954 | Named The Green Night. |
| 63395 (2238) | Q6 (T2) | 0-8-0 | 4'-8½" | BR (NULL) | North Yorkshire Moors Railway, Pickering, ENG | operational | North Eastern Railway Darlington Works, 1918 | |
| 76079 | 4MT | 2-6-0 | 4'-8½" | BR (NULL) | North Yorkshire Moors Railway, Pickering, ENG | operational | BR Horwich Works, 1957 | |
| 60007 (4498) | A4 | 4-6-2 | 4'-8½" | BR (NULL) | North Yorkshire Moors Railway, Pickering, ENG | operational | LNER Doncaster Works #1864, 10/1937 | Named Sir Nigel Gresley. |
| 4 | | 0-6-0ST | 4'-8½" | Birchenwood Gas Works (NULL) | Ribble Steam Railway, Preston, ENG | operational | W.G. Bagnall #2680, 1944 | Named Courageous. Previously named Birchenwood. |
| 6 | | 0-4-0ST | 4'-8½" | National Coal Board (NULL) | Ribble Steam Railway, Preston, ENG | operational | Andrew Barclay Sons & Co. #2261, 1949 | Named Fife Flyer. |
| 21 | | 0-6-0ST | 4'-8½" | British Steel Corp. (NULL) | Ribble Steam Railway, Preston, ENG | operational | Hawthorn Leslie & Co. #3931, 1938 | Named Linda. |
| 1 | | 0-6-0T | 4'-8½" | Coltness Iron Co. (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | North British Locomotive Co. #24564, 1939 | Named Coventry. |
| 1 (L44) | E | 0-4-4T | 4'-8½" | Metropolitan Railway (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Metropolitan Railway Neasden Works, 1898 | |
| 30585 (314) | 0298 | 2-4-0WT | 4'-8½" | BR (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Beyer, Peacock & Co. #1414, 1874 | |
| | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Peckett & Sons #2105, 1951 | Named Rokeby. |
| 1 | | 0-4-0ST | 4'-8½" | Millom & Askam Hematite Iron Co. (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Hudswell, Clarke & Co. #1742, 1946 | Named Millom. |
| V75 | | 0-4-0ST | 4'-8½" | Frazer & Chalmers (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | W.G. Bagnall #2469, 1932 | Named Scott. |
| | 0-4-0ST | 4'-8½" | Associated Portland Cement Manufacturers (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Andrew Barclay Sons & Co. #699, 1891 | Named Swanscombe. |
| 66 | | 0-6-0ST | 4'-8½" | National Coal Board (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Hunslet Engine Co. #3890, 1964 | Last commercial standard gauge steam locomotive built in the UK. |
| 2087 (55) | 0Y1 | 0-4-0ST | 4'-8½" | Courtaulds (NULL) | Buckinghamshire Railway Centre, Quainton, ENG | operational | Peckett & Sons #2087, 1948 | "Named Gibraltar. Previously named Dafydd, then Miranda. " |
| 10 | | 2-6-2 | 15" | Ravenglass & Eskdale Railway (NULL) | Ravenglass & Eskdale Railway, Ravenglass, ENG | operational | Ravenglass & Eskdale Railway Ravenglass Works, 1976 | Named Northern Rock. |
| 7 | | 2-8-2 | 15" | Ravenglass & Eskdale Railway (NULL) | Ravenglass & Eskdale Railway, Ravenglass, ENG | operational | Davey, Paxman & Co. #21104, 1923 | Named River Esk. |
| 9 | | 2-8-2 | 15" | Ravenglass & Eskdale Railway (NULL) | Ravenglass & Eskdale Railway, Ravenglass, ENG | operational | Clarkson & Sons #4669, 1966 | Named River Mite. |
| 3 | | 0-8-2 | 15" | Ravenglass & Eskdale Railway (NULL) | Ravenglass & Eskdale Railway, Ravenglass, ENG | operational | Sir Arthur Heywood, 1894 | Named River Irt. |
| | 0-4-0ST | 4'-8½" | Royal Navy (NULL) | Whitwell & Reepham Railway, Reepham, ENG | operational | Andrew Barclay Sons & Co. #2199, 1945 | Named Victory. |
| 62 | | 0-6-0ST | 4'-8½" | Stewarts & Lloyds (NULL) | Spa Valley Railway, Royal Tunbridge Wells, ENG | operational | Robert Stephenson & Hawthorns #7673, 1950 | Named Ugly. |
| 63 | | 0-6-0ST | 4'-8½" | Stewarts & Lloyds (NULL) | Great Central Railway - Nottingham, Ruddington, ENG | operational | Robert Stephenson & Hawthorns #7761, 1954 | Named Corby. |
| | 2-4-0ST+T | 12" | Ruislip Lido Railway (NULL) | Ruislip Lido Railway, Ruislip, ENG | operational | Ruislip Lido Railway Ruislip Works, 1998 | Named Mad Bess. |
| | 2-2wWT | 4'-8½" | Holborough Cement Co. (NULL) | Rushden Transport Museum & Railway, Rushden, ENG | operational | Aveling & Porter #9449, 1926 | Technically very similar to a traction engine/steam tractor. Named The Blue Circle. |
| 4 | | 0-4-0ST | 4'-8½" | Central Electricity Generating Board | Rushden Transport Museum & Railway, Rushden, ENG | operational | Andrew Barclay Sons & Co. #2168, 1940 | Named Edmundsons. |
| 1 | | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Appleby Frodingham Railway Preservation Society, Scunthorpe, ENG | operational | Peckett & Sons #1438, 1916 | |
| 76084 | 4MT | 2-6-0 | 4'-8½" | BR (NULL) | Poppy Line (North Norfolk Railway), Sheringham, ENG | operational | BR Horwich Works, 1957 | |
| 985 (68088) | Y7 (H) | 0-4-0T | 4'-8½" | LNER (NULL) | Poppy Line (North Norfolk Railway), Sheringham, ENG | operational | LNER Darlington Works #1205, 1923 | |
| 92203 | 9F | 2-10-0 | 4'-8½" | BR (NULL) | Poppy Line (North Norfolk Railway), Sheringham, ENG | operational | BR Swindon Works, 4/1959 | Named Black Prince. |
| 8572 (61572) | B12 | 4-6-0 | 4'-8½" | LNER (NULL) | Poppy Line (North Norfolk Railway), Sheringham, ENG | operational | Beyer, Peacock & Co. #6488, 1928 | |
| 7564 (65462) | J15 (Y14) | 0-6-0 | 4'-8½" | LNER (NULL) | Poppy Line (North Norfolk Railway), Sheringham, ENG | operational | Great Eastern Railway Stratford Works, 1912 | |
| 20 | A5 | 0-4-0 | 4'-8½" | Furness Railway (NULL) | Locomotion: the National Railway Museum at Shildon, Shildon, ENG | operational | Sharp, Stewart & Co. #1448, 1863 | Oldest operational standard gauge steam locomotive in the UK. |
| 30076 (521) | 62 | 0-6-0T | 4'-8½" | | North Dorset Railway, Shillingstone, ENG | restoration | Djuro Djakovic Works, Slavonski Brod, Croatia #521, 1954 | |
| 30075 (669) | 62 | 0-6-0T | 4'-8½" | | North Dorset Railway, Shillingstone, ENG | restoration | Djuro Djakovic Works, Slavonski Brod, Croatia #669, 1960 | |
| | 0-6-2T | 30" | Bowaters Paper Railway (NULL) | Sittingbourne & Kemsley Light Railway, Sittingbourne, ENG | operational | W.G. Bagnall #2624, 1922 | Named Superb. |
| | 0-4-2ST | 30" | Bowaters Paper Railway (NULL) | Sittingbourne & Kemsley Light Railway, Sittingbourne, ENG | operational | Kerr, Stuart & Co. #926, 1905 | Named Leader. |
| 9682 | 5700 | 0-6-0PT | 4'-8½" | BR (NULL) | GWR Preservation Group, Southall, ENG | private operational | BR Swindon Works, 5/1949 | |
| 70000 | 7MT | 4-6-2 | 4'-8½" | BR (NULL) | Icons of Steam, Southall, ENG | private operational | BR Crewe Works, 1/1951 | Owned by the Royal Scot Locomotive & General Trust. First steam locomotive designed by BR to be built. Named Britannia. |
| 34067 | | 4-6-2 | 4'-8½" | BR (NULL) | West Coast Railways Southall, Southall, ENG | private operational | SR Brighton Works, 9/1947 | Named Tangmere. |
| 1306 (61306) | B1 | 4-6-0 | 4'-8½" | LNER (NULL) | West Coast Railways Southall, Southall, ENG | private operational | North British Locomotive Co. #26207, 1948 | Never carried LNER livery prior to preservation. Named Mayflower. |
| 2 | | 0-6-0 | 15" | Lappa Valley Steam Railway (NULL) | Lappa Valley Steam Railway, St. Newlyn East, ENG | operational | Berwyn Engineering #4, 1967 | From Longleat Safari & Adventure Park. Named Muffin. |
| 1 | | 0-6-4T | 15" | Lappa Valley Steam Railway (NULL) | Lappa Valley Steam Railway, St. Newlyn East, ENG | operational | Severn Lamb #7434, 1974 | Rebuilt from an 0-6-2T in 1990. Named Zebedee. |
| | 0-4-0WT | 24" | (NULL) | Richmond Light Railway, Sutton Valence, ENG | private operational | Arnold Jung Lokomotivfabrik #3175, 1921 | Named Jenny. |
| | 0-4-0T | 24" | (NULL) | Richmond Light Railway, Sutton Valence, ENG | private operational | Orenstein & Koppel #3136, 1908 | Named Susan. |
| 34070 | | 4-6-2 | 4'-8½" | BR (NULL) | Swanage Railway, Swanage, ENG | operational | SR Brighton Works, 11/1947 | Named Manston. |
| 80104 | 4MT | 2-6-4T | 4'-8½" | BR | Swanage Railway, Swanage, ENG | operational | BR Brighton Works, 1955 | |
| 30053 | M7 | 0-4-4T | 4'-8½" | BR (NULL) | Swanage Railway, Swanage, ENG | operational | London & South Western Railway Nine Elms Works, 12/1905 | |
| | 0-4-0WT | 22¾" | Lord Penrhyn Slate Quarries (Durham County Waterboard) | Statfold Barn Railway, Tamworth, ENG | stored | Andrew Barclay Sons (Kilmarnock) #1991, 1931 | Named Cegin, from Bangor, North Wales then Chickamauga, GA, then Manati, Puerto Rico |
| GP 39 | | 0-6-0WT | 24" | Surrey County Council Highways Dept. (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hudswell, Clarke & Co. #1643, 1930 | |
| 10-12-D | 4-6-0PT | 600mm | Northwestern (British Govt) | Statfold Barn Railway, Tamworth, ENG | stored | Baldwin #44657, 12/1916 | |
| | 0-4-0T | 24" | Dinorwic Quarries | Statfold Barn Railway, Tamworth, ENG | private display | Hunslet Engine Co. #1709, 1932 | Named Michael, from Langstaff, Ontario |
| 11 | | 0-6-0 | 24" | Colonial Sugar Refining Co. (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hudswell, Clarke & Co. #972, 1912 | Named Fiji. |
| | 0-4-0T | 24" | Dinorwic Quarries | Statfold Barn Railway, Tamworth, ENG | private display | Hunslet Engine Co. #492, 1889 | Named King of the Scarlets; From Langstaff, Ontario |
| 2 | | 0-6-0PT | 24" | Sociedad Hullera Espanola (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | L. Corpet #439, 1884 | Named Minas de Aller. |
| 2 | | 0-4-0VB | 24" | Statfold Barn Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Wilbrighton Wagon Works #2, 2007 | Named Paddy. |
| | 0-4-0ST | 24" | Statfold Barn Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hunslet Engine Co. #3903, 2005 | Named Statfold. |
| | 4-4-0T | 24" | Tongaat Sugar, Natal | Statfold Barn Railway, Tamworth, ENG | private operational | W.G. Bagnall #2820, 1945 | Named Isibutu. |
| 2 | | 0-4-2ST | 24" | British Aluminium Co. (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hunslet Engine Co. #1842, 1936 | Named Howard. |
| 9 | | 0-4-4-0 | 24" | Statfold Barn Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Arnold Jung Lokomotivfabrik #4878, 1930 | Named SF.Djatibarang |
| 1058 | 10-12-D | 4-6-0PT | 600mm | Northwestern (British Govt) | Statfold Barn Railway, Tamworth, ENG | stored | Baldwin #45190, 02/1917 | |
| | 0-4-0T | 24" | Avonmouth Smelting | Statfold Barn Railway, Tamworth, ENG | private operational | Kerr Stuart & Co. #3128, 1918 | From Langstaff, Ontario |
| 1 | | 0-4-0 | 24" | Ryam Sugar Co. (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Davenport Locomotive Works #1650, 1918 | |
| | 0-6-0T | 24" | Rugby Portland | Statfold Barn Railway, Tamworth, ENG | private restoration | Peckett & Sons #1632, 1932 | Named Liass, from Langstaff, Ontario |
| | 0-4-0ST | 24" | Penrhyn Quarry Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hunslet Engine Co. #921, 1906 | Named Sybil Mary. |
| 6 | | 0-4-0T | 30" | (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | La Meuse #3243, 1926 | |
| | 0-4-0ST | 24" | Statfold Barn Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hunslet Engine Co. #3904, 2007 | Named Jack Lane. |
| 4 | | 0-4-2ST | 24" | Indonesian Forestry Service (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Hunslet Engine Co. #3902, 1971 | Last commercial steam locomotive built in the UK. Named Trangkil. |
| 291 | | 0-6-0ST | 24" | Statfold Barn Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Peckett & Sons #2050, 1944 | From Harrogate Gas Works. Named Harrogate. |
| | 0-4-0T | 24" | Penrhyn Quarry Railway (NULL) | Statfold Barn Railway, Tamworth, ENG | private operational | Avonside Engine Co. #2067, 1933 | Named Marchlyn. |
| 376 (19) | 21c | 2-6-0 | 4'-8½" | Kent & East Sussex Railway (NULL) | Kent & East Sussex Railway, Tenterden, ENG | operational | Nydqvist & Holm #1163, 1919 | Named Norwegian. |
| 32678 (8) | A1X | 0-6-0T | 4'-8½" | BR (NULL) | Kent & East Sussex Railway, Tenterden, ENG | operational | London, Brighton & South Coast Railway Brighton Work, 1880 | Named Knowle. Previously named Bembridge. |
| 65 (22) | S100 | 0-6-0T | 4'-8½" | Southern (NULL) | Kent & East Sussex Railway, Tenterden, ENG | operational | Vulcan Foundry #4441, 1943 | Named Maunsell. |
| 14 | 0 | 0-6-0ST | 4'-8½" | Parkgate Iron & Steel Co. (NULL) | Kent & East Sussex Railway, Tenterden, ENG | operational | Manning Wardle #1955, 1917 | Named Charwelton. |
| 3 (32670) | A1X | 0-6-0T | 4'-8½" | Kent & East Sussex Railway (NULL) | Kent & East Sussex Railway, Tenterden, ENG | operational | London, Brighton & South Coast Railway Brighton Work, 1872 | Named Bodiam. Previously named Poplar. |
| | 0-4-0ST | 24" | Callender Cable & Construction Co. (NULL) | Threlkeld Quarry & Mining Museum, Threlkeld, ENG | operational | W.G. Bagnall #2135, 1926 | Named Sir Tom. |
| 4 | | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Kingfisher Line, Titley, ENG | private operational | Peckett & Sons #1738, 1928 | |
| 5542 | 4575 | 2-6-2T | 4'-8½" | GWR (NULL) | Gloucestershire Warwickshire Railway, Toddington, ENG | operational | GWR Swindon Works, 1928 | |
| 2807 | 2800 | 2-8-0 | 4'-8½" | GWR (NULL) | Gloucestershire Warwickshire Railway, Toddington, ENG | operational | GWR Swindon Works #2102, 10/1905 | |
| 7820 | 7800 | 4-6-0 | 4'-8½" | BR (NULL) | Gloucestershire Warwickshire Railway, Toddington, ENG | operational | BR Swindon Works, 1950 | Named Dinmore Manor. |
| 4270 | 4200 | 2-8-0T | 4'-8½" | GWR | Gloucestershire Warwickshire Railway, Toddington, ENG | operational | GWR Swindon Works #2850, 1919 | Owned by Locomotive Services Ltd. |
| 7 | | 0-4-0ST | 24" | (NULL) | North Gloucestershire Railway, Toddington, ENG | operational | Arnold Jung Lokomotivfabrik #939, 1906 | Named Justine. |
| 1091 | | 0-8-0T | 24" | (NULL) | North Gloucestershire Railway, Toddington, ENG | operational | Henschel & Son #15968, 1918 | |
| 6 | | 0-4-2T | 24" | Gledhow-Chaka's Kraal Sugar Estates (NULL) | North Gloucestershire Railway, Toddington, ENG | operational | Hunslet Engine Co. #2075, 1940 | Named Chaka's Kraal. |
| | 0-4-0T+T | 15" | Evesham Vale Light Railway (NULL) | Evesham Vale Light Railway, Twyford, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #312, 2003 | Named St. Egwin. |
| 3 | | 0-6-2T+T | 15" | Evesham Vale Light Railway (NULL) | Evesham Vale Light Railway, Twyford, ENG | operational | Severn Lamb, 1970 | From Longleat Safari & Adventure Park. Named Dougal. |
| | 0-4-2T | 15" | Evesham Vale Light Railway (NULL) | Evesham Vale Light Railway, Twyford, ENG | operational | Exmoor Steam Railway Bratton Fleming Works #300, 1996 | From Markeaton Park Railway. Named Monty. Previously named Markeaton Lady. |
| 5043 | 4073 | 4-6-0 | 4'-8½" | BR (NULL) | Tyseley Locomotive Works, Tyseley, ENG | private operational | GWR Swindon Works, 1936 | Named Earl of Mount Edgcumbe. Previously named Banbury Castle. |
| L.94 (7752) | 5700 | 0-6-0PT | 4'-8½" | London Transport (NULL) | Tyseley Locomotive Works, Tyseley, ENG | private operational | North British Locomotive Co. #24040, 1930 | |
| 1 (6) | | 0-4-0ST | 4'-8½" | General Electric Co. (UK) (NULL) | Tyseley Locomotive Works, Tyseley, ENG | private operational | Peckett & Sons #2004, 1942 | Named Percy. |
| 4965 | 4900 | 4-6-0 | 4'-8½" | GWR (NULL) | Tyseley Locomotive Works, Tyseley, ENG | private operational | GWR Swindon Works, 1931 | Named Rood Ashton Hall. |
| 9600 | 5700 | 0-6-0PT | 4'-8½" | BR (NULL) | Tyseley Locomotive Works, Tyseley, ENG | private operational | GWR Swindon Works, 1945 | |
| 263 (31263) | H | 0-4-4T | 4'-8½" | South Eastern & Chatham Railway (NULL) | Bluebell Railway, Uckfield, ENG | operational | South Eastern & Chatham Railway Ashford Works, 1905 | |
| B473 (32473) | E4 | 0-6-2T | 4'-8½" | Southern (NULL) | Bluebell Railway, Uckfield, ENG | operational | London, Brighton & South Coast Railway Brighton Work, 1898 | Formerly named Birch Grove. |
| 847 (30847) | S15 | 4-6-0 | 4'-8½" | Southern (NULL) | Bluebell Railway, Uckfield, ENG | operational | SR Eastleigh Works, 1936 | |
| 178 (31178) | P | 0-6-0T | 4'-8½" | South Eastern & Chatham Railway (NULL) | Bluebell Railway, Uckfield, ENG | operational | South Eastern & Chatham Railway Ashford Works, 1910 | Named Pioneer II. |
| 592 (31592) | C | 0-6-0 | 4'-8½" | South Eastern & Chatham Railway (NULL) | Bluebell Railway, Uckfield, ENG | operational | South Eastern & Chatham Railway Longhedge Works, 1902 | |
| 3 | | 0-4-0T | 4'-8½" | Dorking Greystone Lime Co. (NULL) | Bluebell Railway, Uckfield, ENG | operational | Fletcher, Jennings & Co. #158, 1877 | Named Captain Baxter. |
| 30541 (541) | Q | 0-6-0 | 4'-8½" | BR (NULL) | Bluebell Railway, Uckfield, ENG | operational | SR Eastleigh Works, 1939 | |
| 323 (31323) | P | 0-6-0T | 4'-8½" | South Eastern & Chatham Railway (NULL) | Bluebell Railway, Uckfield, ENG | operational | South Eastern & Chatham Railway Ashford Works, 1910 | Named Bluebell. |
| 54 | | 0-6-0ST | 4'-8½" | Stewarts & Lloyds (NULL) | East Anglian Railway Museum, Wakes Colne, ENG | operational | Robert Stephenson & Hawthorns #7031, 1941 | Named Pen Green. |
| | 0-4-0ST | 4'-8½" | Bowaters Paper Railway (NULL) | East Anglian Railway Museum, Wakes Colne, ENG | operational | W.G. Bagnall #2542, 1936 | Named Jubilee. |
| 15 | | 0-6-0ST | 4'-8½" | British Sugar Corp. (NULL) | Mid-Suffolk Light Railway Museum, Wetheringsett, ENG | operational | Hudswell, Clarke & Co. #1700, 1938 | Named Wissington. |
| | 0-4-0WTram | 4'-8½" | (NULL) | Mid-Suffolk Light Railway Museum, Wetheringsett, ENG | operational | John Cockerill #2525, 1906 | |
| | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Mid-Suffolk Light Railway Museum, Wetheringsett, ENG | operational | W.G. Bagnall #2565, 1936 | |
| 2 | | 0-4-2ST | 30" | Bowaters Paper Railway (NULL) | ZSL Whipsnade Zoo, Whipsnade, ENG | operational | Kerr, Stuart & Co. #1049, 1908 | Named Excelsior. |
| 4 | | 0-6-2T | 30" | Bowaters Paper Railway (NULL) | ZSL Whipsnade Zoo, Whipsnade, ENG | operational | Kerr, Stuart & Co. #4034, 1920 | Named Superior. |
| 3 | | 0-4-0ST | 4'-8½" | Central Electricity Generating Board (NULL) | Ecclesbourne Valley Railway, Wirksworth, ENG | operational | Andrew Barclay Sons & Co. #2360, 1954 | Named Brian Harrison. |
| | 0-4-0ST | 4'-8½" | Kilnhurst Tar Works (NULL) | Ecclesbourne Valley Railway, Wirksworth, ENG | operational | Andrew Barclay Sons & Co. #2217, 1947 | Named Henry Ellison. |
| | 0-6-0T | 15" | Wotton Light Railway (NULL) | Wotton Light Railway, Wotton Underwood, ENG | private operational | Exmoor Steam Railway Bratton Fleming Works #301, 1996 | Named Sandy. |
| 9 | | 0-4-0T+T | 24" | Gartell Light Railway (NULL) | Gartell Light Railway, Yenston, ENG | operational | Alan White, 2008 | Named Jean. |
| 6 | | 0-4-2T | 24" | Gartell Light Railway (NULL) | Gartell Light Railway, Yenston, ENG | operational | North Dorset Locomotive Works #698, 1998 | Named Mr. G. |
| | 0-4-0ST | 4'-8½" | War Dept. (NULL) | Yeovil Railway Centre, Yeovil, ENG | operational | Andrew Barclay Sons & Co. #1398, 1915 | Named Lord Fisher. |
| 4468 | A4 | 4-6-2 | 4'-8½" | LNER (NULL) | National Railway Museum, York, ENG | display | LNER Doncaster Works #1870, 3/1938 | "World speed record-holder for steam locomotives (125.88 mph, 3 July 1938). Named Mallard. " |
| | 0-2-2 | 4'-8½" | Liverpool & Manchester Railway (NULL) | National Railway Museum, York, ENG | operational | Locomotion Enterprises, 1979 | Replica. Named Rocket. |
| 3717 (3440) | 3700 | 4-4-0 | 4'-8½" | GWR (NULL) | National Railway Museum, York, ENG | display | GWR Swindon Works #2000, 4/1903 | First steam locomotive in the UK claimed to have reached 100 mph (1904). Named City of Truro. |
| 92220 | 9F | 2-10-0 | 4'-8½" | BR (NULL) | National Railway Museum, York, ENG | display | BR Swindon Works, 3/1960 | Last commercial main line steam locomotive built in the UK. Named Evening Star. |
| 13 | | 2-4-0T | 36" | Isle of Man Railway | Isle of Man Railway, Douglas, IOM | operational | Beyer, Peacock & Co. #5382, 1910 | Named Kissack |
| 10 | | 2-4-0T | 36" | Isle of Man Railway | Isle of Man Railway, Douglas, IOM | operational | Beyer, Peacock & Co. #4662, 1905 | Named G. H. Wood |
| 4 | | 2-4-0T | 36" | Isle of Man Railway | Isle of Man Railway, Douglas, IOM | operational | Beyer, Peacock & Co. #1416, 1874 | Named Loch |
| 12 | | 2-4-0T | 36" | Isle of Man Railway | Isle of Man Railway, Douglas, IOM | operational | Beyer, Peacock & Co. #5126, 1908 | Named Hutchinson |
| 8 | | 2-4-0T | 36" | Isle of Man Railway | Isle of Man Railway, Douglas, IOM | operational | Beyer, Peacock & Co. #3610, 1894 | Named Fenella |
| | 0-4-0WT | 19" | Great Laxey Mine Railway | Great Laxey Mine Railway, Laxey, IOM | operational | Great North Steam #20, 2004 | Replica, named Ant |
| | 0-4-0WT | 19" | Great Laxey Mine Railway | Great Laxey Mine Railway, Laxey, IOM | operational | Great North Steam #21, 2004 | Replica, named Bee |
| | 2-4-0T | 24" | Groudle Glen Railway | Groudle Glen Railway, Onchan, IOM | operational | W. G. Bagnall, 1896 | Named Sea Lion |
| 5 | 5C (IN1) | 0-6-2T | 36" | West Clare Railway | West Clare Railway, Moyasta, IRL | operational | Dübs & Co. (Scotland) #2890, 1892 | Named Slieve Callan |
| 1 | | 0-4-2T | 15" | Difflin Lake Railway | Oakfield Park, Oakfield Demesne, IRL | operational | Exmoor Steam Railway Co. #317, 2003 | Named Duches of Difflin |
| 2 (LM 44) | | 0-4-0WT | 36" | Bord na Mona | Stradbally Woodland Railway, Stradbally, IRL | operational | Andrew Barclay Sons & Co. #2264, 1949 | Run by the Irish Steam Preservation Society |
| | 0-4-0ST | 4'-8½" | Crane Ltd | Pallot Steam Motor & General Museum, Trinity, JER | operational | Peckett & Sons #2129, 1952 | Named Kestral |
| 1 | | 0-4-0T | 36" | British Aluminium Co. | Giant's Causeway & Bushmills Railway, Bushmills, NRL | operational | Peckett & Sons #1026, 1904 | Named Tyrone |
| 1 | | 0-4-0T+WT | 5'-3" | Comlucht Suicre Eireann | Downpatrick & Country Down Railway, Downpatrick, NRL | operational | Orenstein & Koppel #12475, 1934 | |
| 85 | V | 4-4-0 | 5'-3" | Great Northern Railway (Ireland) | Railway Preservation Society of Ireland, Whitehead, NRL | operational | Beyer, Peacock & Co. #6733, 1932 | Named Merlin |
| 4 | WT | 2-6-4T | 5'-3" | Northern Counties Committee (LMS)) | Railway Preservation Society of Ireland, Whitehead, NRL | operational | LMS Derby Works, 1947 | |
| 461 (15) | K2 | 2-6-0 | 5'-3" | Dublin & Southeastern Railway | Railway Preservation Society of Ireland, Whitehead, NRL | operational | Beyer, Peacock & Co. #6112, 1922 | |
| 46512 | 2MT | 2-6-0 | 4'-8½" | BR | Strathspey Railway, Aviemore, SCT | operational | BR Swindon Works, 1952 | Named E. V. Cooper, Engineer |
| 19 | J94 | 0-6-0ST | 4'-8½" | National Coal Board | Bo'ness & Kinneil Railway, Bo'ness, SCT | operational | Hunslet Engine Co. #1444, 1954 | |
| 246 (62712) | D49 | 4-4-0 | 4'-8½" | LNER | Bo'ness & Kinneil Railway, Bo'ness, SCT | operational | LNER Darlington Works, 1928 | Named Morayshire |
| 75254 (7) | J94 | 0-6-0ST | 4'-8½" | War Dept | Bo'ness & Kinneil Railway, Bo'ness, SCT | operational | W. G. Bagnall #2777, 1945 | From National Coal Board |
| 1 | | 0-4-0ST | 4'-8½" | Cupar Sugar Beet Factory | Caledonian Railway, Brechin, SCT | operational | Andrew Barclay Sons & Co. #1863, 1926 | |
| 60009 (4488) | A4 | 4-6-2 | 4'-8½" | BR | John B. Cameron, Kirkcaldy, SCT | private operational | LNER Doncaster Works, 1937 | Named Union of South Africa |
| | 0-6-0ST | 4'-8½" | Stewarts & Lloyds | Royal Deeside Railway, Milton of Crathes, SCT | operational | Andrew Barclay Sons & Co. #2139, 1942 | Named Salmon |
| 8 | | 0-4-0F | 4'-8½" | Shell Petroleum | Scottish Industrial Railway Centre, Waterside, SCT | operational | Andrew Barclay Sons & Co. #1952, 1928 | Only operational fireless steam locomotive in the UK |
| 10 | | 0-4-0ST | 4'-8½" | National Coal Board | Scottish Industrial Railway Centre, Waterside, SCT | operational | Andrew Barclay Sons & Co. #2244, 1947 | |
| 9 (1213) | | 0-6-2T | 23.75" | Vale of Rheidol Railway (NULL) | Vale of Rheidol Railway, Aberystwyth, WAL | operational | Davies & Metcalfe, 1902 | Named Prince of Wales. |
| 8 | | 2-6-2T | 23.75" | GWR (NULL) | Vale of Rheidol Railway, Aberystwyth, WAL | operational | GWR Swindon Works, 1923 | Named Llywelyn. |
| 1 | | 0-4-0ST | 4'-8½" | Royal Navy | Pontypool & Blaenavon Railway, Blaenavon, WAL | operational | Andrew Barclay Sons & Co. #1385, 1914 | Named Rosyth. |
| 71515 | | 0-6-0ST | 4'-8½" | War Dept. | Pontypool & Blaenavon Railway, Blaenavon, WAL | operational | Robert Stephenson & Hawthorns #7169, 1944 | |
| 71516 | | 0-6-0ST | 4'-8½" | War Dept. | Gwili Railway, Bronwydd Arms, WAL | operational | Robert Stephenson & Hawthorns #7170, 1944 | Named Welsh Guardsman. |
| 3879 | | 0-6-0ST | 4'-8½" | War Dept. | Gwili Railway, Bronwydd Arms, WAL | operational | Vulcan Foundry #5272, 1945 | Named Haulwen. |
| 7 | | 0-4-2ST | 27" | Corris Railway (NULL) | Corris Railway, Corris, WAL | operational | Winson Engineering #17, 2005 | Winson Engineering closed in 2001. Completed by Drayton Designs. |
| | 2-6-4T | 12¼" | Reseau Guerledan | Fairbourne Railway, Fairbourne, WAL | operational | Milner Engineering, 1979 | Miniature replica. Named Russell. Previously named Kitson. |
| | 0-4-0ST | 12¼" | Reseau Guerledan | Fairbourne Railway, Fairbourne, WAL | operational | Milner Engineering, 1978 | Miniature replica. Named Sherpa. Previously named France. |
| | 0-4-0ST | 24" | Penrhyn Quarry Railway (NULL) | Teifi Valley Railway, Henllan, WAL | operational | Hunslet Engine Co. #606, 1894 | Named Alan George. |
| 3 (293) | | 0-4-0ST | 23½" | Port Dinorwic (NULL) | Llanberis Lake Railway, Llanberis, WAL | operational | Hunslet Engine Co. #1430, 1922 | Named Dolbadarn. |
| 1 | | 0-4-0ST | 23½" | Dinorwic Slate Quarry (NULL) | Llanberis Lake Railway, Llanberis, WAL | operational | Hunslet Engine Co. #493, 1889 | Named Elidir. Previously named Enid and Red Damsel. |
| 2 | | 0-4-0ST | 23½" | Dinorwic Slate Quarry (NULL) | Llanberis Lake Railway, Llanberis, WAL | operational | Hunslet Engine Co. #894, 1904 | Named Thomas Bach. Previously named Wild Aster. |
| | 0-4-0ST | 23½" | Dinorwic Slate Quarry | National Slate Museum, Llanberis, WAL | operational | Hunslet Engine Co. #873, 1905 | Named Una |
| 2 | | 0-4-2Tcog | 800 mm | Snowdon Mountain Railway (NULL) | Snowdon Mountain Railway, Llanberis, WAL | operational | Swiss Locomotive & Machine Works #934, 1895 | Named Enid. |
| 6 | | 0-4-2Tcog | 800 mm | Snowdon Mountain Railway (NULL) | Snowdon Mountain Railway, Llanberis, WAL | operational | Swiss Locomotive & Machine Works #2838, 1922 | Named Padarn. |
| 3 | | 0-4-2Tcog | 800 mm | Snowdon Mountain Railway (NULL) | Snowdon Mountain Railway, Llanberis, WAL | operational | Swiss Locomotive & Machine Works #925, 1895 | Named Wyddfa. |
| 2 | | 0-6-0T | 30" | Welshpool & Llanfair Light Railway (NULL) | Welshpool & Llanfair Light Railway, Llanfair Caereinion, WAL | operational | Beyer, Peacock & Co. #3497, 1902 | Named Countess. |
| 12 | | 0-6-2T | 30" | Antigua Sugar Railway (NULL) | Welshpool & Llanfair Light Railway, Llanfair Caereinion, WAL | operational | Kerr, Stuart & Co. #4404, 1929 | Named Joan. |
| 1 | | 0-6-0T | 30" | Welshpool & Llanfair Light Railway (NULL) | Welshpool & Llanfair Light Railway, Llanfair Caereinion, WAL | operational | Beyer, Peacock & Co. #3496, 1902 | Named The Earl. |
| 3882 | 2884 | 2-8-0 | 4'-8½" | GWR | Llangollen Railway, Llangollen, WAL | operational | GWR Swindon Works, 1938 | |
| 45337 (5337) | 5MT (5) | 4-6-0 | 4'-8½" | BR | Llangollen Railway, Llangollen, WAL | operational | Sir W.G. Armstrong Whitworth & Co. #1392, 1937 | |
| 5199 | 5101 | 2-6-2T | 4'-8½" | GWR | Llangollen Railway, Llangollen, WAL | operational | GWR Swindon Works, 1934 | |
| 1 | | 0-6-0ST | 4'-8½" | National Coal Board | Llangollen Railway, Llangollen, WAL | operational | Hunslet Engine Co. #3783, 1953 | Named Darfield |
| 18 | | 0-6-0ST | 4'-8½" | Eastmoors Steelworks | Llangollen Railway, Llangollen, WAL | operational | Hunslet Engine Co. #1873, 1937 | Named Jessie. |
| 6430 | 6400 | 0-6-0PT | 4'-8½" | GWR | Llangollen Railway, Llangollen, WAL | operational | GWR Swindon Works, 1937 | |
| | 0-4-0ST | 24" | Dinorwic Slate Quarry (NULL) | Bala Lake Railway, Llanuwchllyn, WAL | operational | Hunslet Engine Co. #780, 1902 | Named Alice. |
| | 0-4-0ST | 24" | Penrhyn Quarry Railway (NULL) | Bala Lake Railway, Llanuwchllyn, WAL | operational | Hunslet Engine Co. #364, 1885 | Named Winifred. |
| | 0-4-0ST | 24" | Dinorwic Slate Quarry (NULL) | Bala Lake Railway, Llanuwchllyn, WAL | operational | Hunslet Engine Co. #822, 1903 | Named Maid Marian. |
| 3 | | 0-4-0ST | 24" | Dinorwic Slate Quarry (NULL) | Bala Lake Railway, Llanuwchllyn, WAL | operational | Hunslet Engine Co. #779, 1902 | Named Holy War. |
| | 0-4-0 | 15" | Rhiw Valley Light Railway (NULL) | Rhiw Valley Light Railway, Manafon, WAL | operational | TMA Engineering #25657, 2003 | Named Jack. |
| | 0-6-2T | 15" | Rhiw Valley Light Railway (NULL) | Rhiw Valley Light Railway, Manafon, WAL | operational | Severn Lamb #20, 1973 | Named Powys. |
| 99.3553 | | 0-6-2WT+T | 23.75" | Mecklenburg-Pommersche Schmalspurbahn (NULL) | Brecon Mountain Railway, Merthyr Tydfil, WAL | operational | Arnold Jung Lokomotivfabrik #1261, 1908 | Named Graf Schwerin-Lowitz. |
| 2 | | 4-6-2 | 23.75" | Eastern Province Cement Works (NULL) | Brecon Mountain Railway, Merthyr Tydfil, WAL | operational | Baldwin #61269, 1930 | |
| 68070 | | 0-6-0ST | 4'-8½" | BR | Garw Valley Railway, Pontycymer, WAL | operational | Hunslet Engine Co. #3840, 1956 | Named Pamela. |
| | 0-4-0ST | 23½" | Penrhyn Quarry Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Hunslet Engine Co. #855, 1905 | Owned by the National Trust. Named Hugh Napier. Operates on the Ffestiniog Railway. |
| | 2-4-0ST+T | 23½" | Penrhyn Quarry Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Hunslet Engine Co. #590, 1893 | Named Linda. Operates on the Ffestiniog Railway. |
| 10 | | 0-4-0+0-4-0T | 23½" | Ffestiniog Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Ffestiniog Railway Boston Lodge Works, 1879 | Named Merddin Emrys. Operates on the Ffestiniog Railway. |
| 9 | | 0-4-4T | 23½" | Ffestiniog Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Ffestiniog Railway Boston Lodge Works, 1999 | Replica. Named Taliesin. Operates on the Ffestiniog Railway. |
| 138 | NGG16 | 2-6-2+2-6-2 | 23½" | South African Railways (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Beyer, Peacock & Co., 1958 | Operates on the Welsh Highland Railway |
| 11 | | 0-4-0+0-4-0T | 23½" | Ffestiniog Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Ffestiniog Railway Boston Lodge Works, 1979 | Named Earl of Merioneth. Operates on the Ffestiniog Railway. |
| K1 | K | 0-4-0+0-4-0 | 23½" | Tasmanian Government Railways (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Beyer, Peacock & Co., 1909 | Operates on the Welsh Highland Railway |
| | 0-4-0ST | 23½" | Pen-yr-Orsedd Quarry (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Hunslet Engine Co. #707, 1899 | Named Britomart. Operates on the Ffestiniog Railway. |
| | 2-4-0ST+T | 23½" | Penrhyn Quarry Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Hunslet Engine Co. #589, 1893 | Named Blanche. Operates on the Ffestiniog Railway. |
| 2 | | 0-4-0ST+T | 23½" | Ffestiniog Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | George England & Co., 1863 | Oldest operational narrow gauge steam locomotive in the UK. Named Prince. Operates on the Ffestiniog Railway. |
| 14 | | 2-6-2T | 23½" | Lynton & Barnstaple Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Ffestiniog Railway Boston Lodge Works, 2010 | Replica. Named Lyd. Operates on the Ffestiniog Railway. |
| 143 | NGG16 | 2-6-2+2-6-2 | 23½" | South African Railways (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Beyer, Peacock & Co., 1958 | Operates on the Welsh Highland Railway |
| 12 | | 0-4-0+0-4-0T | 23½" | Ffestiniog Railway (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | Ffestiniog Railway Boston Lodge Works, 1992 | Named David Lloyd George. Operates on the Ffestiniog Railway. |
| 87 | NGG16 | 2-6-2+2-6-2 | 23½" | South African Railways (NULL) | Ffestiniog & Welsh Highland Railways, Porthmadog, WAL | operational | John Cockerill #3267, 1937 | Operates on the Welsh Highland Railway |
| | 2-6-2T | 23½" | North Wales Narrow Gauge Railways (NULL) | Welsh Highland Heritage Railway, Porthmadog, WAL | operational | Hunslet Engine Co. #901, 1906 | Not affiliated with the Welsh Highland Railway. Named Russell. |
| | 0-6-0T | 23½" | Stewarts & Lloyds (NULL) | Welsh Highland Heritage Railway, Porthmadog, WAL | operational | Andrew Barclay Sons & Co. #1578, 1918 | Not affiliated with the Welsh Highland Railway. Named Gertrude. |
| 102 | | 4-4-2 | 15" | Woodland Park Miniature Railway (NULL) | Rhyl Miniature Railway, Rhyl, WAL | operational | Albert Barnes & Co., 1922 | Named Railway Queen. Previously named Michael. |
| 44 | | 4-4-0 | 15" | Lancaster & Chester Railway (NULL) | Rhyl Miniature Railway, Rhyl, WAL | operational | Cagney, 1910 | |
| 105 | | 4-4-2 | 15" | Rhyl Miniature Railway (NULL) | Rhyl Miniature Railway, Rhyl, WAL | operational | Albert Barnes & Co., 1930 | Named Michael. |
| 101 | | 4-4-2 | 15" | Rhyl Miniature Railway (NULL) | Rhyl Miniature Railway, Rhyl, WAL | operational | Albert Barnes & Co., 1920 | Named Joan. |
| | 4wG | 52" | Swansea Industrial & Maritime Museum (NULL) | National Waterfront Museum, Swansea, WAL | operational | Swansea Industrial & Maritime Museum, 1981 | "Replica of Richard Trevithick's Pen-y-Darren, the world's first steam locomotive confirmed to have successfully run on rails (1804). Named Penydarren. " |
| 7 | | 0-4-2T | 27" | Talyllyn Railway (NULL) | Talyllyn Railway, Tywyn, WAL | operational | Talyllyn Railway Pendre Works, 1991 | Named Tom Rolt. |
| 6 | | 0-4-0WT | 27" | Airservice Construction Corps (NULL) | Talyllyn Railway, Tywyn, WAL | operational | Andrew Barclay Sons & Co. #1431, 1918 | Named Douglas. |
| 1 | | 0-4-2ST | 27" | Talyllyn Railway (NULL) | Talyllyn Railway, Tywyn, WAL | operational | Fletcher, Jennings & Co. #42, 1864 | Named Talyllyn. |
| 4 | | 0-4-2ST | 27" | Corris Railway (NULL) | Talyllyn Railway, Tywyn, WAL | operational | Kerr, Stuart & Co. #4047, 1921 | Named Edward Thomas. |
| 2 | | 0-4-0WT | 27" | Talyllyn Railway (NULL) | Talyllyn Railway, Tywyn, WAL | operational | Fletcher, Jennings & Co. #63, 1866 | Named Dolgoch. |
| 3 | | 0-4-2ST | 27" | Corris Railway | Talyllyn Railway, Tywyn, WAL | unknown | | Named Sir Haydn |