|gauge OO models|
|technical & model details|
|couplers||NEM 362 coupler pocket, short coupling mechanism, English hook couplings|
|interior lighting||driver cab|
|Age notice||not suitable under 14 years.|
|digital & sound|
|digital plug||NEM 652 8-pin|
|era (Great Britain)||6|
The class was developed for the Western Region of British Railways, which had opted for lightweight locomotives with hydraulic transmission, when allocated funds under the British Railways Modernisation Plan of 1955. 101 of the class were built between 1961 and 1964, when it became apparent that there was a requirement for a medium-power diesel-hydraulic design for both secondary passenger work and freight duties.
They were allocated to Bristol Bath Road, Cardiff Canton, and Old Oak Common. None of the class was named. Withdrawal from service began in 1971, and was completed by 1975. Their early withdrawal was caused, primarily, by BR classifying the hydraulic transmission as non-standard. Four locomotives were preserved.
Since 2002, several diesel locomotives have been released in 00 gauge as well as 0 gauge. The British Outline makes up the largest part of Heljan's business.