'Triumph' was allocated to the Stoke Division in 1968, being re-numbered 50042 in 1973 under the TOPS classification system replacing D442 which was its first number. In 1974 No. 50042 was relocated to the Bristol Bath Road Shed and remained there throughout its later life and where it was named 'Triumph' in 1978. The locomotive was eventually withdrawn at the end of 1990 having spent almost 22 years in service.
