Other products BREL built prototypes such as the Class 210 DEMU and the experimental high-speed Advanced Passenger Train (APT) tilting train during the 1970s and early 1980s. The Class 210 were externally very similar to the first batch of Class 317 EMUs, but half of the forward carriage was taken up by the engine room, where an above-floor diesel engine drove a generator to power traction motors on the axles. References External links 1970 establishments in the United Kingdom 1992 disestablishments in the United Kingdom ABB British Rail research and development British Rail subsidiaries and divisions Companies based in Derby Locomotive manufacturers of the United Kingdom Railway companies disestablished in 1992 Railway companies established in 1970 Rolling stock manufacturers of the United Kingdom Science and technology in Derbyshire