The British Rail Class 04 was a 0-6-0 diesel-mechanical shunting locomotive class, built between 1952 and 1962 and was the basis for the later Class 03 built in the British Railways workshops. However, the first locomotive to be built to the design was actually DS1173, in 1948, which served as a departmental shunter at Hither Green depot, before being transferred to the capital stock list as D2341 in 1967.