The Great Train Robbery was the robbery of £2.6 million from a Royal Mail train heading from Glasgow to London on the West Coast Main Line in the early hours of 8 August 1963, at Bridego Railway Bridge, Ledburn, near Mentmore in Buckinghamshire, England.

After tampering with the lineside signals in order to bring the train to a halt, a gang of fifteen, led by Bruce Reynolds, attacked the train. Other gang members included Gordon Goody, Buster Edwards, Charlie Wilson, Roy James, John Daly, Jimmy White, Ronnie Biggs, Tommy Wisbey, Jim Hussey, Bob Welch and Roger Cordrey, as well as three men known only as numbers "1", "2" and "3". A 16th man, an unnamed retired train driver, was also present.

Buckinghamshire (abbreviated Bucks) is a ceremonial county in South East England which borders Greater London to the south east, Berkshire to the south, Oxfordshire to the west, Northamptonshire to the north, Bedfordshire to the north east and Hertfordshire to the east.

A large part of the Chiltern Hills, an Area of Outstanding Natural Beauty, runs through the south of the county and attracts many walkers and cyclists from London. In this area older buildings are often made from local flint and red brick. Many parts of the county are quite affluent and like many areas around London this has led to problems with housing costs: several reports have identified the market town of Beaconsfield as having among the highest property prices outside London.

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