After the Second War, Britain's railways were rundown and worn out, requiring massive investment and modernization. The Big Four railway companies were nationalized from 1948, and the newly formed British Railways embarked on a program of building new Standard steam locomotives to replace older types. These started to come on stream from 1951. This program was superseded by the 1955 scheme to dieselize and electrify many lines and so the last loco of the Standard types was built in 1960 and the steam locomotives had been swept entirely from the BR network by 1968. This series of books, 'The...