Locomotive, Diesel, BR Class 43 (HST)

History: The British Rail Class 43 (HST) is the TOPS classification used for the InterCity 125 High Speed Train (formerly classes 253 and 254) power cars, built by BREL (British Rail Engineering Limited) Crewe Works from 1975 to 1982.
This diesel-electric locomotive is rated 2,250hp (Engine) / 1,770hp (At Rail) , with a tractive effort of 17,980 lbf (Max) / 10,340 lbf (Continuous). A total of 197 (Power Cars) & 848 (Mark 3 Coaches) have been built. A set consists of two Class 43 power cars, one at each end of a fixed formation of Mark 3 carriages, the total of which differs by operator.
The class is officially the fastest diesel locomotive in the world, with an absolute maximum speed of 148 mph (238 km/h), and a regular service speed of 125 mph (201 km/h).
Most are still in service in 2018, though they are supposed to be replaced in the forthcoming years.

From Wikipedia

Railroad/Company: British Railways (BR), which from 1965 traded as British Rail, was the state-owned company that operated most of the overground rail transport in Great Britain between 1948 and 1997. It was formed from the nationalisation of the "Big Four" British railway companies and lasted until the gradual privatisation of British Rail, in stages between 1994 and 1997. Originally a trading brand of the Railway Executive of the British Transport Commission, it became an independent statutory corporation in 1962 designated as the British Railways Board.

British Rail designed and manufactured rolling stock from 1948 to 1989, at which time its subsidiary British Rail Engineering Limited (BREL) was privatised.

1997 marked the end of the privatization effort in which the last assets of British Rail were sold to 31 regional freight and passenger operators as well as Railtrack (which was later brought under public control as Network Rail), which was given the track and infrastructure.

Read more on Wikipedia.