'Skinhead' Brush Type 2 D5518 runs into Cambridge at the head of a Liverpool Street - Kings Lynn service, the loco was rebuilt and re-engined in 1967 following accident damage but it remained as 31018 until the implementation of the TOPS numbering system when it became 31101. The vacant 31018 number being taken by the Class prototype D5500, 5//9/59. ©Sid Rickard/J & J Collection