2D-004-014 Class 56 56303 (ex 56125 Crewe Built) DCR Diesel LocomotiveExpected Delivery June 2026 (Subject to Change at Manufacturer's Discretion). The British Rail Class 56 is a type of Co Co locomotive designed for heavy freight work and was introduced between 1976 and 1983. In all, 135 Class 56s were built, the first 30 by Electroputers in Romania, but due to poor quality of construction the remainder were built by BREL at theirDoncaster and Crewe works. The Class 56 was considered to be a successful locomotive and