Which type of locomotive pulled the bristalian in 1964?

Question

Which type of locomotive pulled the bristalian in 1964?

Answer 1

Was it Castle Class locos - or diesel class 52 (later) that pulled the Bristolian. I know from 1976 onward it was IC125s.

Answer 2

The Bristolian was a Castle Turn until 1959 then class 42/43 Warships, took over and from 1962 the Class 52 Westerns and later the Brush type 4 Class 47 took over the Bristol trains. If the Bristolian name was still in use in 1964 and I am not sure that it was I would guess Class 52 Western

The Last Castle turns were to Worcester via Oxford in early 1964 ready for the City of Truro 100mph centenary railtour in May 1964, it may well be the last non stop steam run from Bristol to London was the 9th May 1964 when Earl of Ducie did the run in  95 1/2 minutes hitting 96 mph en route

Steam officially  ended on the old Western region on 1st Jan 1966