D438 entered service on 21 September 1968. Under TOPS it was renumbered 50.038 and subseuently named 'Formidable' on 5 May 1978.
D438 was withdrawn on 27 September 1988 and cut up by Berry at Old Oak Common.
Class 50 no. 50.038 "Formidable" parked at Birmingham New Street, 18 June 1984
Class 50 no. 50.038 'Formidable' at Birmingham New Street, 17 August 1983. Ref 0002367
