British Rail Class 144

British Rail Class 144 "Pacer"
Class 144, unit number 144017 at York railway station on 3rd June 2004.
144023 at Leeds City Station.

The British Rail Class 144 "Pacer diesel multiple units (DMUs) were built by BREL Derby from 1986-1987. A total of 23 units were built, replacing many of the earlier First-generation "Heritage" DMUs.