British Rail

British Railways, which after 1965 traded as British Rail, was the state-owned company responsible for rail transport in Great Britain from its inception in 1948 to its privatisation in the 1990s, with the organisation officially becoming defunct in 1997. From its creation until 1952, it was the trade name of the Railway Executive, the subsidiary of the British Transport Commission (BTC) responsible for railway operations. The Railway Executive was then abolished in order for British Railways to fall directly under the BTC. After the Transport Act 1962, it because an independent statutory corporation when the BTC was replaced by a new organisation whose official name was the British Railways Board.

Between 1923 and 1947, the railway companies in Great Britain were grouped into the "Big Four", which had been designed to stem the losses of a majority of railway companies by consolidating them into fewer with less competition. However, after the economic losses of World War II, this model was no longer viable, and the nationalisation of the railways under the Transport Act 1947 was widely supported. The early years of British Railways were marred by poor decision making, a lack of standardisation, and misdiagnosis of the root problems with the railway system. The regions of British Railways remained separate with individual corporate identities, and high-speed train travel was limited to the luxury of Pullman trains. The 1955 Modernisation Plan was an effort by British Railways to invest and set a path forward, but it was ultimately a failure and did little to change the gradual decline of the railway system, with 1955 the last year the company made a profit.