Ruston and Hornsby LSSE/H

Ruston & Hornsby built these diesel shunters for industry in the 1960s in diesel-hydraulic (LSSH) or diesel-electric (LSSE) versions. A modified version of the latter with some extra features for mainline use was bought by British Railways as it's Class 07.

The LSSE/H has a small wheelbase (and could be either be a 0-4-0 or 0-6-0 locomotive depending on the customer's requirements) to cope with the tight curves typically found on industrial railways but be larger and more powerful than the small diesel-mechanical shunter usually found on these lines.
Iris seen at Princes Risborough

Information
Built: 1959-1968
Builder: Ruston & Hornsby
Motor: Paxman 6RPHL diesel
Power: Typically 275 hp (205 kW) though could vary
Wheel arrangement: 0-4-0 or 0-6-0

A number of the shunters were sold to MOD use an example being Iris (RH 459515 / 1961) which once carried the number WD8214. It is now preserved on the Chinnor & Princes Risborough Railway. A small number now carry TOPS numbers as Class 01/5 - former industrial shunters now used on the main line. One being 01 509 at Chiltern Railway's depot at Aylesbury.
01 509 at Aylesbury

Another view of Iris, in a shed in Chinnor