The London docks, later the Port of London Authority, maintained an extensive railway network with a fleet of steam industrial locomotives. In the early 1960s the remaining steam locomotives were replaced by six new diesel-electric shunters built by the Yorkshire Engine Company [1]. 
|  | 
| Four of the PLA YEC diesels [1] | 
| Information | 
| Number built: | 6 | 
| Built: | 1961 | 
| Builder: | Yorkshire Engine Company | 
| Motor: | Rolls Royce C6 diesel | 
| Power: | 220 hp (164 kW) | 
| Wheel arrangement: | 0-4-0DE | 
The locomotives remained in service until declining traffic, largely due to containerisation of maritime cargo, led to the closure of the PLA railway network in 1970.
[1] "Steamers pass from the scene", Meccano Magazine (January 1962) p. 12