The British Rail Class 31 diesel locomotives, also known as the Brush Type 2 and previously as Class 30, were built by Brush Traction from 1957 to 1962. They were numbered in two series, D5500-D5699 and D5800-D5862. Construction of the first locomotive was completed in the final week of September 1957, and the handing-over took place on 31 October. The first Class 31 entered service in November 1957, after the launch of the Class 20 locomotive and was one of the Pilot Scheme locomotives ordered by British Railways to replace steam traction.
A Class 31 at Saltley MPD, 1987
D5513, one of the original batch, in BR green livery
Class 31/1 on Sharnbrook bank with a short van train in April 1985
31418 at Birmingham New Street.
The British Rail Class 25, also known as the Sulzer Type 2, is a class of 327 diesel locomotives built between 1961 and 1967 for British Rail. They were numbered in two series, D5151–D5299 and D7500–D7677.
Class 25 in BR blue at Wolverhampton in 1984.
25047 of the 25/1 subclass outside Manchester Victoria in 1980
D7585 working as Derby station pilot in May 1965. The livery is BR green with small yellow warning panels.
25304 of the 25/3 subclass at Manchester Victoria in 1982.