British Rail Mark 2

The British Rail Mark 2 is the second design of British Rail railway carriages, of steel construction and built between 1964 and 1975 by British Rail workshops, from 1969 British Rail Engineering Limited. Its semi-integral construction gave more strength than the Mark 1 and tackled the corrosion at the base of the body where it met the underframe. The prototype, FK 13252, was built in 1963 and is preserved at the Mid-Norfolk Railway, and all production coaches were built on a single assembly line at the British Rail carriage works at Derby. The Mark 2 was a mainstay of the InterCity network, and electric multiple units such as Classes 310 and 312 used its bodyshell. Most have since been withdrawn, though some remain in use on charters, heritage railways and Network Rail test trains.