Category:British Rail Class 31 D5855 (TOPS 31321, 31468, 31568)

English: D5855 entered service with British Railways in August 1962 and was numbered 31321 in the TOPS series from December 1974. In April 1985 it was fitted with electric train heating (ETH) and renumbered 31468 although the ETH was isolated from May 1990 until April 1993 during which time it was running as 31568. From May 1990 until October 1997 it was named The Enginemen's Fund and then became Hydra from June 1999 until it was withdrawn in February 2007.