Below is a list of all 171 GWR Castle Class engines, built between August 1923 and August 1950.
| Numbers | First Name | Second Name | Built | Withdrawn | Notes | | 111 | Viscount Churchill | — | 1924|Sep}} | 1953|Jul}} | Rebuilt from 111 The Great Bear |
| 4000 | North Star | — | 1929|Nov}} | 1957|May}} | Rebuilt from Star Class 4000 |
| 100 A1}} | Shooting Star | Lloyds | 1925|Apr}} | 1950|May}} | Rebuilt from Star Class 4009. Renumbered and renamed January 1936. Temporary fitted with oil firing in the 1940s.[1] First to be withdrawn. |
| 4016 | Knight of the Golden Fleece | The Somerset Light Infantry (Prince Albert's) | 1925|Oct}} | 1951|Sep}} | Rebuilt from Star Class 4016. Renamed January 1938. Nameplate & crest on display at Somerset County Museum, Taunton |
| 4032 | Queen Alexandra | — | 1926|Apr}} | 1951|09}} | Rebuilt from Star Class 4032 |
| 4037 | Queen Philippa | The South Wales Borderers | 1926|Jun}} | 1962|Sep}} | Rebuilt from Star Class 4037. Renamed March 1937 |
| 4073 | Caerphilly Castle | — | 1923|Aug}} | 1960|May}} | Preserved at Swindon Steam Railway Museum |
| 4074 | Caldicot Castle | — | 1923|Dec}} | 1963|May}} |
| 4075 | Cardiff Castle | — | 1924|Jan}} | 1961|Nov}} |
| 4076 | Carmarthen Castle | — | 1924|Feb}} | 1963|Feb}} |
| 4077 | Chepstow Castle | — | 1924|Feb}} | 1962|Aug}} |
| 4078 | Pembroke Castle | — | 1924|Feb}} | 1962|Jul}} |
| 4079 | Pendennis Castle | — | 1924|Feb}} | 1964|May}} | Preserved at Didcot Railway Centre; under restoration |
| 4080 | Powderham Castle | — | 1924|Mar}} | 1964|Aug}} |
| 4081 | Warwick Castle | — | 1924|Mar}} | 1963|Jan}} |
| 4082 | Windsor Castle | 7013 Bristol Castle | 1924|Apr}} | 1964|Sep}} | Swapped name and number with 7013 Bristol Castle in February 1952 |
| 4083 | Abbotsbury Castle | — | 1925|May}} | 1961|Dec}} |
| 4084 | Aberystwyth Castle | — | 1925|May}} | 1960|Oct}} |
| 4085 | Berkeley Castle | — | 1925|May}} | 1962|May}} |
| 4086 | Builth Castle | — | 1925|Jun}} | 1962|Apr}} |
| 4087 | Cardigan Castle | — | 1925|Jun}} | 1963|Oct}} |
| 4088 | Dartmouth Castle | — | 1925|Jul}} | 1964|May}} |
| 4089 | Donnington Castle | — | 1925|Jul}} | 1964|Sep}} |
| 4090 | Dorchester Castle | — | 1925|Jul}} | 1963|Jun}} |
| 4091 | Dudley Castle | — | 1925|Jul}} | 1959|Jan}} | First ‘new-built’ Castle to be withdrawn |
| 4092 | Dunraven Castle | — | 1925|Aug}} | 1961|12}} |
| 4093 | Dunster Castle | — | 1926|May}} | 1964|Sep}} |
| 4094 | Dynevor Castle | — | 1926|May}} | 1962|Mar}} |
| 4095 | Harlech Castle | — | 1926|Jun}} | 1962|Dec}} |
| 4096 | Highclere Castle | — | 1926|Jun}} | 1963|Jan}} |
| 4097 | Kenilworth Castle | — | 1926|Jun}} | 1960|May}} |
| 4098 | Kidwelly Castle | — | 1926|Jul}} | 1963|Dec}} |
| 4099 | Kilgerran Castle | — | 1926|Aug}} | 1962|Sep}} |
| 5000 | Launceston Castle | — | 1926|Sep}} | 1964|oct}} |
| 5001 | Llandovery Castle | — | 1926|Sep}} | 1963|feb}} |
| 5002 | Ludlow Castle | — | 1926|Sep}} | 1964|sep}} |
| 5003 | Lulworth Castle | — | 1927|May}} | 1962|aug}} |
| 5004 | Llanstephan Castle | — | 1927|Jun}} | 1962|apr}} | Used in the 1936 movie "The Last Journey" Also appears in 1949 Ealing Studios movie 'Run for your Money' |
| 5005 | Manorbier Castle | — | 1927|Jun}} | 1960|feb}} | This is the only Castle Class to carry streamlining but this was experimental' |
| 5006 | Tregenna Castle | — | 1927|Jun}} | 1962|apr}} |
| 5007 | Rougemont Castle | — | 1927|Jun}} | 1962|sep}} |
| 5008 | Raglan Castle | — | 1927|Jun}} | 1962|sep}} |
| 5009 | Shrewsbury Castle | — | 1927|Jun}} | 1960|oct}} |
| 5010 | Restormel Castle | — | 1927|Jul}} | 1959|oct}} |
| 5011 | Tintagel Castle | — | 1927|Jul}} | 1962|sep}} |
| 5012 | Berry Pomeroy Castle | — | 1927|Jul}} | 1962|apr}} |
| 5013 | Abergavenny Castle | — | 1932|Jun}} | 1962|jul}} |
| 5014 | Goodrich Castle | — | 1932|Jun}} | 1965|feb}} |
| 5015 | Kingswear Castle | — | 1932|Jul}} | 1963|apr}} |
| 5016 | Montgomery Castle | — | 1932|Jul}} | 1962|sep}} |
| 5017 | St. Donat's Castle | The Gloucestershire Regiment 28th 61st | 1932|Jul}} | 1962|sep}} | Renamed April 1954 |
| 5018 | St Mawes Castle | — | 1932|Jul}} | 1964|mar}} |
| 5019 | Treago Castle | — | 1932|Jul}} | 1962|sep}} |
| 5020 | Trematon Castle | — | 1932|Jul}} | 1962|Nov}} |
| 5021 | Whittington Castle | — | 1932|Aug}} | 1962|sep}} |
| 5022 | Wigmore Castle | — | 1932|Aug}} | 1963|jun}} |
| 5023 | Brecon Castle | — | 1934|Apr}} | 1963|feb}} |
| 5024 | Carew Castle | — | 1934|Apr}} | 1962|May}} |
| 5025 | Chirk Castle | — | 1934|Apr}} | 1963|Nov}} |
| 5026 | Criccieth Castle | — | 1934|Apr}} | 1964|nov}} |
| 5027 | Farleigh Castle | — | 1934|Apr}} | 1962|nov}} |
| 5028 | Llantilio Castle | — | 1934|May}} | 1960|may}} |
| 5029 | Nunney Castle | — | 1934|May}} | 1963|Dec}} | 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 | — | 1934|May}} | 1962|sep}} |
| 5031 | Totnes Castle | — | 1934|May}} | 1963|oct}} |
| 5032 | Usk Castle | — | 1934|May}} | 1962|sep}} |
| 5033 | Broughton Castle | — | 1935|May}} | 1962|sep}} |
| 5034 | Corfe Castle | — | 1935|May}} | 1962|09}} |
| 5035 | Coity Castle | — | 1935|May}} | 1962|May}} |
| 5036 | Lyonshall Castle | — | 1935|May}} | 1962|sep}} | Briefly seen at 'Mallingford' station in the 1953 Ealing Comedy film "The Titfield Thunderbolt". |
| 5037 | Monmouth Castle | — | 1935|May}} | 1964|mar}} |
| 5038 | Morlais Castle | — | 1935|Jun}} | 1963|sep}} |
| 5039 | Rhuddlan Castle | — | 1935|Jun}} | 1964|jun}} | Temporary fitted with oil firing in the 1940s.[1] |
| 5040 | Stokesay Castle | — | 1935|Jun}} | 1963|oct}} |
| 5041 | Tiverton Castle | — | 1935|Jul}} | 1963|dec}} |
| 5042 | Winchester Castle | — | 1935|Jul}} | 1965|jun}} |
| 5043 | Barbury Castle | Earl of Mount Edgcumbe | 1936|Mar}} | 1963|Dec}} | Renamed September 1937. Preserved |
| 5044 | Beverston Castle | Earl of Dunraven | 1936|Mar}} | 1962|apr}} | Renamed September 1937 |
| 5045 | Bridgwater Castle | Earl of Dudley | 1936|Mar}} | 1962|sep}} | Renamed September 1937 |
| 5046 | Clifford Castle | Earl Cawdor | 1936|Apr}} | 1962|sep}} | Renamed August 1937 |
| 5047 | Compton Castle | Earl of Dartmouth | 1936|Apr}} | 1962|sep}} | Renamed August 1937 |
| 5048 | Cranbrook Castle | Earl of Devon | 1936|Apr}} | 1962|aug}} | Renamed August 1937 |
| 5049 | Denbigh Castle | Earl of Plymouth | 1936|Apr}} | 1963|mar}} | Renamed August 1937 |
| 5050 | Devizes Castle | Earl of St Germans | 1936|May}} | 1963|aug}} | Renamed August 1937 |
| 5051 | Drysllwyn Castle | Earl Bathurst | 1936|May}} | 1963|May}} | Renamed August 1937. Preserved at Didcot Railway Centre. Carries either name, alternately. |
| 5052 | Eastnor Castle | Earl of Radnor | 1936|May}} | 1962|sep}} | Renamed July 1937 |
| 5053 | Bishop's Castle | Earl Cairns | 1936|May}} | 1962|jul}} | Renamed August 1937 |
| 5054 | Lamphey Castle | Earl of Ducie | 1936|Jun}} | 1964|nov}} | Renamed September 1937 |
| 5055 | Lydford Castle | Earl of Eldon | 1936|Jun}} | 1964|oct}} | Renamed August 1937 |
| 5056 | Ogmore Castle | Earl of Powis | 1936|Jun}} | 1964|nov}} | Renamed September 1937 |
| 5057 | Penrice Castle | Earl Waldegrave | 1936|Jun}} | 1964|mar}} | Renamed October 1937 |
| 5058 | Newport Castle | Earl of Clancarty | 1937|May}} | 1963|mar}} | Renamed September 1937 |
| 5059 | Powis Castle | Earl St Aldwyn | 1937|May}} | 1962|jun}} | Renamed October 1937 |
| 5060 | Sarum Castle | Earl of Berkeley | 1937|Jun}} | 1963|apr}} | Renamed October 1937 |
| 5061 | Sudeley Castle | Earl of Birkenhead | 1937|Jun}} | 1962|sep}} | Renamed October 1937 |
| 5062 | Tenby Castle | Earl of Shaftesbury | 1937|Jun}} | 1962|aug}} | Renamed November 1937 |
| 5063 | Thornbury Castle | Earl Baldwin | 1937|Jun}} | 1965|feb}} | Renamed July 1937 |
| 5064 | Tretower Castle | Bishop's Castle | 1937|Jun}} | 1962|sep}} | Renamed September 1937 |
| 5065 | Upton Castle | Newport Castle | 1937|Jul}} | 1963|jan}} | Renamed September 1937 |
| 5066 | Wardour Castle | Sir Felix Pole | 1937|Jul}} | 1962|sep}} | Renamed April 1956 |
| 5067 | St Fagans Castle | — | 1937|Jul}} | 1962|jul}} |
| 5068 | Beverston Castle | — | 1938|Jun}} | 1962|sep}} |
| 5069 | Isambard Kingdom Brunel | — | 1938|Jun}} | 1962|feb}} |
| 5070 | Sir Daniel Gooch | — | 1938|Jun}} | 1964|mar}} |
| 5071 | Clifford Castle | Spitfire | 1938|Jun}} | 1963|oct}} | Renamed September 1940 |
| 5072 | Compton Castle | Hurricane | 1938|Jun}} | 1962|oct}} | Renamed November 1940 |
| 5073 | Cranbrook Castle | Blenheim | 1938|Jul}} | 1964|mar}} | Renamed January 1941 |
| 5074 | Denbigh Castle | Hampden | 1938|Jul}} | 1964|may}} | Renamed January 1941 |
| 5075 | Devizes Castle | Wellington | 1938|Aug}} | 1962|sep}} | Renamed October 1940 |
| 5076 | Drysllwyn Castle | Gladiator | 1938|Aug}} | 1964|sep}} | Renamed January 1941 |
| 5077 | Eastnor Castle | Fairey Battle | 1938|Aug}} | 1962|jul}} | Renamed October 1940 |
| 5078 | Lamphey Castle | Beaufort | 1939|May}} | 1962|nov}} | Renamed January 1941 |
| 5079 | Lydford Castle | Lysander | 1939|May}} | 1960|may}} | Renamed November 1940. Temporary fitted with oil firing in the 1940s.[1] |
| 5080 | Ogmore Castle | Defiant | 1939|May}} | 1963|Apr}} | Renamed January 1941. Preserved |
| 5081 | Penrice Castle | Lockheed Hudson | 1939|May}} | 1963|oct}} | Renamed January 1941 |
| 5082 | Powis Castle | Swordfish | 1939|Jun}} | 1962|Jul}} | Renamed January 1941 |
| 5083 | Bath Abbey | — | 1937|Jun}} | 1959|jan}} | Rebuilt from Star Class 4063. Temporary fitted with oil firing in the 1940s.[1] |
| 5084 | Reading Abbey | — | 1937|Apr}} | 1962|Jul}} | Rebuilt from Star Class 4064 |
| 5085 | Evesham Abbey | — | 1939|Jul}} | 1964|feb}} | Rebuilt from Star Class 4065 |
| 5086 | Viscount Horne | — | 1937|Dec}} | 1958|nov}} | Rebuilt from Star Class 4066 |
| 5087 | Tintern Abbey | — | 1940|Nov}} | 1963|aug}} | Rebuilt from Star Class 4067 |
| 5088 | Llanthony Abbey | — | 1939|Feb}} | 1962|sep}} | Rebuilt from Star Class 4068 |
| 5089 | Westminster Abbey | — | 1939|Oct}} | 1964|sep}} | Rebuilt from Star Class 4069 |
| 5090 | Neath Abbey | — | 1939|Apr}} | 1962|may}} | Rebuilt from Star Class 4070 |
| 5091 | Cleeve Abbey | — | 1938|Dec}} | 1964|oct}} | Rebuilt from Star Class 4071. Temporary fitted with oil firing in the 1940s.[1] |
| 5092 | Tresco Abbey | — | 1938|Apr}} | 1963|jul}} | Rebuilt from Star Class 4072 |
| 5093 | Upton Castle | — | 1939|Jun}} | 1963|sep}} |
| 5094 | Tretower Castle | — | 1939|Jun}} | 1962|sep}} |
| 5095 | Barbury Castle | — | 1939|Jun}} | 1962|aug}} |
| 5096 | Bridgwater Castle | — | 1939|Jun}} | 1964|jun}} |
| 5097 | Sarum Castle | — | 1939|Jul}} | 1963|mar}} |
| 5098 | Clifford Castle | — | 1946|May}} | 1964|jun}} |
| 5099 | Compton Castle | — | 1946|May}} | 1963|feb}} |
| 7000 | Viscount Portal | — | 1946|May}} | 1963|dec}} |
| 7001 | Denbigh Castle | Sir James Milne | 1946|May}} | 1963|sep}} | Renamed February 1948 |
| 7002 | Devizes Castle | — | 1946|Jun}} | 1964|mar}} |
| 7003 | Elmley Castle | — | 1946|Jun}} | 1964|aug}} |
| 7004 | Eastnor Castle | — | 1946|Jun}} | 1964|jan}} |
| 7005 | Lamphey Castle | Sir Edward Elgar | 1946|Jun}} | 1964|sep}} | Renamed August 1957 |
| 7006 | Lydford Castle | — | 1946|Jun}} | 1963|dec}} |
| 7007 | Ogmore Castle | Great Western | 1946|Jul}} | 1963|feb}} | Renamed January 1948 |
| 7008 | Swansea Castle | — | 1948|May}} | 1964|sep}} |
| 7009 | Athelney Castle | — | 1948|May}} | 1963|mar}} |
| 7010 | Avondale Castle | — | 1948|Jun}} | 1964|mar}} |
| 7011 | Banbury Castle | — | 1948|Jun}} | 1965|feb}} |
| 7012 | Barry Castle | — | 1948|Jun}} | 1964|nov}} |
| 7013 | Bristol Castle | 4082 Windsor Castle | 1948|Jul}} | 1965|feb}} | Swapped name and number with 4082 Windsor Castle in February 1952 |
| 7014 | Caerhays Castle | — | 1948|Jul}} | 1965|feb}} |
| 7015 | Carn Brea Castle | — | 1948|Jul}} | 1963|apr}} |
| 7016 | Chester Castle | — | 1948|Aug}} | 1962|nov}} |
| 7017 | G. J. Churchward | — | 1948|Aug}} | 1963|feb}} | Only Castle class name with full stops |
| 7018 | Drysllwyn Castle | — | 1949|May}} | 1963|sep}} |
| 7019 | Fowey Castle | — | 1949|May}} | 1964|sep}} |
| 7020 | Gloucester Castle | — | 1949|May}} | 1963|sep}} |
| 7021 | Haverfordwest Castle | — | 1949|Jun}} | 1963|sep}} |
| 7022 | Hereford Castle | — | 1949|Jun}} | 1965|jun}} |
| 7023 | Penrice Castle | — | 1949|Jun}} | 1965|feb}} |
| 7024 | Powis Castle | — | 1949|Jun}} | 1965|feb}} |
| 7025 | Sudeley Castle | — | 1949|Aug}} | 1964|sep}} |
| 7026 | Tenby Castle | — | 1949|Aug}} | 1964|oct}} |
| 7027 | Thornbury Castle | — | 1949|Aug}} | 1963|dec}} | Preserved |
| 7028 | Cadbury Castle | — | 1950|May}} | 1963|dec}} |
| 7029 | Clun Castle | — | 1950|May}} | 1965|Dec}} | Last Castle to be withdrawn. Preserved |
| 7030 | Cranbrook Castle | — | 1950|Jun}} | 1963|feb}} |
| 7031 | Cromwell's Castle | — | 1950|Jun}} | 1963|jul}} |
| 7032 | Denbigh Castle | — | 1950|Jun}} | 1964|sep}} |
| 7033 | Hartlebury Castle | — | 1950|Jul}} | 1963|jan}} |
| 7034 | Ince Castle | — | 1950|Aug}} | 1965|jun}} |
| 7035 | Ogmore Castle | — | 1950|Aug}} | 1965|aug}} |
| 7036 | Taunton Castle | — | 1950|Aug}} | 1963|sep}} |
| 7037 | Swindon | — | 1950|Aug}} | 1963|mar}} |
|
1. ^1 2 3 4 {{Cite web|url=http://www.greatwestern.org.uk/m_in_gwr_oil_fire.htm|title=GWR oil - fired locomotives|last=|first=|date=|website=The Great Western Archive|archive-url=|archive-date=|dead-url=|access-date=2018-09-23}}