Network Rail class 31 No. 31233 pushing its train 1Q14 Neville Hill to Scarborough at Willerby Carr crossing 7th August 2014

The British Rail Class 31 diesel locomotives, also known as the Brush Type 2 and originally as Class 30, were built by Brush Traction from 1957-62.
Construction of the first locomotive was completed in the final week of September 1957, and the handing-over took place on 31 October. The 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.