31538 heads north past Millmeece with an engineer's train on 21 August 1994. New to Ipswich as D5557 in 1959, the loco later became 31139 under TOPS, and then 31438 when fitted with ETH. When this equipment was isolated, it was renumbered to 31538. The loco survives today (as 31438) on the Epping Ongar Railway.