Editing GWR 4073 Class (section)

===Rebuilds===
Between January and September 1924, the only Great Western [[4-6-2]], No.111 [[GWR 111 The Great Bear|The Great Bear]], was rebuilt into a member of the Castle Class, although only the "front portion of the original [[Locomotive frame|frames]] and the number plates were used again but probably little else". The new locomotive was renamed ''Viscount Churchill'' and survived until withdrawal in July 1953.{{sfnb |le Fleming|1953 |p=H13}}

In April 1925, Star class No. 4009 ''Shooting Star'' was likewise rebuilt as a Castle by extending the frames and fitting a new Castle Class boiler and cab. It was renumbered and renamed 100 A1 ''Lloyds'' and was withdrawn in 1950.{{sfnb |le Fleming|1953 |p=H17–H19}}

In October 1925 a second Star class, No. 4016 ''The Somerset Light Infantry (Prince Albert's)'', was similarly converted to a Castle although in this case, it retained its name and number.{{sfnb |le Fleming|1953 |p=H13}} Two further conversions of Stars were undertaken in 1926; Nos. 4032 ''Queen Alexandra'' and 4037 ''The South Wales Borderers'' retaining their names and numbers and surviving until 1951 and 1962 respectively.

In November 1929 the prototype for the Star Class, No. 4000 ''North Star'' was rebuilt into a Castle, being subsequently withdrawn in 1957.

Between 1937 and 1940 a further ten members of the 'Abbey series' of the Star class (Nos. 4063–4072) were rebuilt as Castles on Lot 317. They were allocated new numbers 5083 to 5092 but retained their original names and were withdrawn between 1958 and 1964.