EMUs A History

From nationalisation in 1948, British Railways built huge numbers of EMUs for suburban and short/medium-distance main line express duties, initially of pre-nationalisation design. In 1954 the Standard Mark 1 type was introduced, but was obsolete by the late 1960s. More EMUs were needed to replace life-expired pre-nationalisation sets still working as well as to provide for new electrification serv...