British Rail 18000

prototype British gas turbine locomotive

British Rail 18000 was a prototype mainline gas turbine-electric locomotive built for British Railways in 1949. It was built by Brown, Boveri & Cie. It was ordered by the Great Western Railway in 1940, but construction was delayed by World War II. It spent its working life on the Western Region of British Railways, operating express passenger services from London Paddington station.

British Rail 18000
British Rail 18000 at Didcot Railway Centre on 6 August 2011
Type and origin
Power typeGas Turbine-electric
BuilderBrown, Boveri & Cie and
Swiss Locomotive and Machine Works
Order numberGWR Lot 372
Serial numberBBC: 4559
SLM: 3977
Build date1949
 • UIC(A1A)(A1A)
Wheel diameterDriving: 4 ft 0+14 in (1,226 mm)
Idling: 3 ft 2 in (965 mm)
Loco weight115.18 long tons (117.03 t)
Prime moverGas Turbine
Traction motorsFour
TransmissionDC generator
DC traction motors
Train heatingSteam generator
Performance figures
Power output2,500 hp (1,900 kW)
Tractive effort31,500 lbf (140,000 N)
Power classBR: 4
NicknamesKerosene Castle



The locomotive is preserved at Didcot Railway Centre.