List of GWR 4073 Class locomotives
Below is a list of all 171 GWR Castle Class engines, built between August 1923 and August 1950.
Fleet details
| Numbers | First Name | Second Name | Built | Withdrawn | Notes |
| 111 | Viscount Churchill | — | Rebuilt from 111 The Great Bear | ||
| 4000 | North Star | — | Rebuilt from Star Class 4000 | ||
| 4009 / | Shooting Star | Lloyds | Rebuilt from Star Class 4009. Renumbered and renamed January 1936. Temporary fitted with oil firing in the 1940s. First to be withdrawn. | ||
| 4016 | Knight of the Golden Fleece | The Somerset Light Infantry | Rebuilt from Star Class 4016. Renamed January 1938. Nameplate & crest on display at Somerset County Museum, Taunton | ||
| 4032 | Queen Alexandra | — | Rebuilt from Star Class 4032 | ||
| 4037 | Queen Philippa | The South Wales Borderers | Rebuilt from Star Class 4037. Renamed March 1937 | ||
| 4073 | Caerphilly Castle | — | Preserved at Swindon Steam Railway Museum | ||
| 4074 | Caldicot Castle | — | |||
| 4075 | Cardiff Castle | — | |||
| 4076 | Carmarthen Castle | — | |||
| 4077 | Chepstow Castle | — | |||
| 4078 | Pembroke Castle | — | |||
| 4079 | Pendennis Castle | — | Preserved at Didcot Railway Centre; under restoration | ||
| 4080 | Powderham Castle | — | |||
| 4081 | Warwick Castle | — | |||
| 4082 | Windsor Castle | 7013 Bristol Castle | Swapped name and number with 7013 Bristol Castle in February 1952 | ||
| 4083 | Abbotsbury Castle | — | |||
| 4084 | Aberystwyth Castle | — | |||
| 4085 | Berkeley Castle | — | |||
| 4086 | Builth Castle | — | |||
| 4087 | Cardigan Castle | — | |||
| 4088 | Dartmouth Castle | — | |||
| 4089 | Donnington Castle | — | |||
| 4090 | Dorchester Castle | — | |||
| 4091 | Dudley Castle | — | First ‘new-built’ Castle to be withdrawn | ||
| 4092 | Dunraven Castle | — | |||
| 4093 | Dunster Castle | — | |||
| 4094 | Dynevor Castle | — | |||
| 4095 | Harlech Castle | — | |||
| 4096 | Highclere Castle | — | |||
| 4097 | Kenilworth Castle | — | |||
| 4098 | Kidwelly Castle | — | |||
| 4099 | Kilgerran Castle | — | real castle's name spelled Cilgerran Castle | ||
| 5000 | Launceston Castle | — | |||
| 5001 | Llandovery Castle | — | |||
| 5002 | Ludlow Castle | — | |||
| 5003 | Lulworth Castle | — | |||
| 5004 | Llanstephan Castle | — | Used in the 1936 movie "The Last Journey" Also appears in 1949 Ealing Studios movie 'Run for your Money' | ||
| 5005 | Manorbier Castle | — | This is the only Castle Class to carry streamlining but this was experimental' | ||
| 5006 | Tregenna Castle | — | |||
| 5007 | Rougemont Castle | — | |||
| 5008 | Raglan Castle | — | |||
| 5009 | Shrewsbury Castle | — | |||
| 5010 | Restormel Castle | — | |||
| 5011 | Tintagel Castle | — | |||
| 5012 | Berry Pomeroy Castle | — | |||
| 5013 | Abergavenny Castle | — | |||
| 5014 | Goodrich Castle | — | |||
| 5015 | Kingswear Castle | — | |||
| 5016 | Montgomery Castle | — | |||
| 5017 | St. Donat's Castle | The Gloucestershire Regiment 28th 61st | Renamed April 1954 | ||
| 5018 | St Mawes Castle | — | |||
| 5019 | Treago Castle | — | |||
| 5020 | Trematon Castle | — | |||
| 5021 | Whittington Castle | — | |||
| 5022 | Wigmore Castle | — | |||
| 5023 | Brecon Castle | — | |||
| 5024 | Carew Castle | — | |||
| 5025 | Chirk Castle | — | |||
| 5026 | Criccieth Castle | — | |||
| 5027 | Farleigh Castle | — | |||
| 5028 | Llantilio Castle | — | |||
| 5029 | Nunney Castle | — | Preserved - Rescued from Barry in May 1976. Seen pulling "The Elgar Explorer" at Ascot Under Wychwood on 1 December 2001 . At Tyseley for an intermediate overhaul as of December 2005. Overhaul completed in April 2008 and has been passed for mainline service. | ||
| 5030 | Shirburn Castle | — | |||
| 5031 | Totnes Castle | — | |||
| 5032 | Usk Castle | — | |||
| 5033 | Broughton Castle | — | |||
| 5034 | Corfe Castle | — | |||
| 5035 | Coity Castle | — | |||
| 5036 | Lyonshall Castle | — | Briefly seen at 'Mallingford' station in the 1953 Ealing Comedy film "The Titfield Thunderbolt". | ||
| 5037 | Monmouth Castle | — | |||
| 5038 | Morlais Castle | — | |||
| 5039 | Rhuddlan Castle | — | Temporary fitted with oil firing in the 1940s. | ||
| 5040 | Stokesay Castle | — | |||
| 5041 | Tiverton Castle | — | |||
| 5042 | Winchester Castle | — | |||
| 5043 | Barbury Castle | Earl of Mount Edgcumbe | Renamed September 1937. Preserved | ||
| 5044 | Beverston Castle | Earl of Dunraven | Renamed September 1937 | ||
| 5045 | Bridgwater Castle | Earl of Dudley | Renamed September 1937 | ||
| 5046 | Clifford Castle | Earl Cawdor | Renamed August 1937 | ||
| 5047 | Compton Castle | Earl of Dartmouth | Renamed August 1937 | ||
| 5048 | Cranbrook Castle | Earl of Devon | Renamed August 1937 | ||
| 5049 | Denbigh Castle | Earl of Plymouth | Renamed August 1937 | ||
| 5050 | Devizes Castle | Earl of St Germans | Renamed August 1937 | ||
| 5051 | Drysllwyn Castle | Earl Bathurst | Renamed August 1937. Preserved at Didcot Railway Centre. Carries either name, alternately. | ||
| 5052 | Eastnor Castle | Earl of Radnor | Renamed July 1937 | ||
| 5053 | Bishop's Castle | Earl Cairns | Renamed August 1937 | ||
| 5054 | Lamphey Castle | Earl of Ducie | Renamed September 1937 | ||
| 5055 | Lydford Castle | Earl of Eldon | Renamed August 1937 | ||
| 5056 | Ogmore Castle | Earl of Powis | Renamed September 1937 | ||
| 5057 | Penrice Castle | Earl Waldegrave | Renamed October 1937 | ||
| 5058 | Newport Castle | Earl of Clancarty | Renamed September 1937 | ||
| 5059 | Powis Castle | Earl St Aldwyn | Renamed October 1937 | ||
| 5060 | Sarum Castle | Earl of Berkeley | Renamed October 1937 | ||
| 5061 | Sudeley Castle | Earl of Birkenhead | Renamed October 1937 | ||
| 5062 | Tenby Castle | Earl of Shaftesbury | Renamed November 1937 | ||
| 5063 | Thornbury Castle | Earl Baldwin | Renamed July 1937 | ||
| 5064 | Tretower Castle | Bishop's Castle | Renamed September 1937 | ||
| 5065 | Upton Castle | Newport Castle | Renamed September 1937 | ||
| 5066 | Wardour Castle | Sir Felix Pole | Renamed April 1956 | ||
| 5067 | St Fagans Castle | — | |||
| 5068 | Beverston Castle | — | |||
| 5069 | Isambard Kingdom Brunel | — | |||
| 5070 | Sir Daniel Gooch | — | |||
| 5071 | Clifford Castle | Spitfire | Renamed September 1940 | ||
| 5072 | Compton Castle | Hurricane | Renamed November 1940 | ||
| 5073 | Cranbrook Castle | Blenheim | Renamed January 1941 | ||
| 5074 | Denbigh Castle | Hampden | Renamed January 1941 | ||
| 5075 | Devizes Castle | Wellington | Renamed October 1940 | ||
| 5076 | Drysllwyn Castle | Gladiator | Renamed January 1941 | ||
| 5077 | Eastnor Castle | Fairey Battle | Renamed October 1940 | ||
| 5078 | Lamphey Castle | Beaufort | Renamed January 1941 | ||
| 5079 | Lydford Castle | Lysander | Renamed November 1940. Temporary fitted with oil firing in the 1940s. | ||
| 5080 | Ogmore Castle | Defiant | Renamed January 1941. Preserved | ||
| 5081 | Penrice Castle | Lockheed Hudson | Renamed January 1941 | ||
| 5082 | Powis Castle | Swordfish | Renamed January 1941 | ||
| 5083 | Bath Abbey | — | Rebuilt from Star Class 4063. Temporary fitted with oil firing in the 1940s. | ||
| 5084 | Reading Abbey | — | Rebuilt from Star Class 4064 | ||
| 5085 | Evesham Abbey | — | Rebuilt from Star Class 4065 | ||
| 5086 | Viscount Horne | — | Rebuilt from Star Class 4066 | ||
| 5087 | Tintern Abbey | — | Rebuilt from Star Class 4067 | ||
| 5088 | Llanthony Abbey | — | Rebuilt from Star Class 4068 | ||
| 5089 | Westminster Abbey | — | Rebuilt from Star Class 4069 | ||
| 5090 | Neath Abbey | — | Rebuilt from Star Class 4070 | ||
| 5091 | Cleeve Abbey | — | Rebuilt from Star Class 4071. Temporary fitted with oil firing in the 1940s. | ||
| 5092 | Tresco Abbey | — | Rebuilt from Star Class 4072 | ||
| 5093 | Upton Castle | — | |||
| 5094 | Tretower Castle | — | |||
| 5095 | Barbury Castle | — | |||
| 5096 | Bridgwater Castle | — | |||
| 5097 | Sarum Castle | — | |||
| 5098 | Clifford Castle | — | |||
| 5099 | Compton Castle | — | |||
| 7000 | Viscount Portal | — | |||
| 7001 | Denbigh Castle | Sir James Milne | Renamed February 1948 | ||
| 7002 | Devizes Castle | — | |||
| 7003 | Elmley Castle | — | |||
| 7004 | Eastnor Castle | — | |||
| 7005 | Lamphey Castle | Sir Edward Elgar | Renamed August 1957 | ||
| 7006 | Lydford Castle | — | |||
| 7007 | Ogmore Castle | Great Western | Renamed January 1948 | ||
| 7008 | Swansea Castle | — | |||
| 7009 | Athelney Castle | — | |||
| 7010 | Avondale Castle | — | |||
| 7011 | Banbury Castle | — | |||
| 7012 | Barry Castle | — | |||
| 7013 | Bristol Castle | 4082 Windsor Castle | Swapped name and number with 4082 Windsor Castle in February 1952 | ||
| 7014 | Caerhays Castle | — | |||
| 7015 | Carn Brea Castle | — | |||
| 7016 | Chester Castle | — | |||
| 7017 | G. J. Churchward | — | Only Castle class name with full stops | ||
| 7018 | Drysllwyn Castle | — | |||
| 7019 | Fowey Castle | — | |||
| 7020 | Gloucester Castle | — | |||
| 7021 | Haverfordwest Castle | — | |||
| 7022 | Hereford Castle | — | |||
| 7023 | Penrice Castle | — | |||
| 7024 | Powis Castle | — | |||
| 7025 | Sudeley Castle | — | |||
| 7026 | Tenby Castle | — | |||
| 7027 | Thornbury Castle | — | Preserved | ||
| 7028 | Cadbury Castle | — | |||
| 7029 | Clun Castle | — | Last Castle to be withdrawn. Preserved | ||
| 7030 | Cranbrook Castle | — | |||
| 7031 | Cromwell's Castle | — | |||
| 7032 | Denbigh Castle | — | |||
| 7033 | Hartlebury Castle | — | |||
| 7034 | Ince Castle | — | |||
| 7035 | Ogmore Castle | — | |||
| 7036 | Taunton Castle | — | |||
| 7037 | Swindon | — |