Brink's-Mat robbery: In London, 6,800 gold bars worth nearly £26 million are stolen from the Brink's-Mat vault at Heathrow Airport.

The Brink's-Mat robbery was one of the largest robberies in British history, with £26 million worth of gold bullion, diamonds, and cash stolen. It occurred at the Heathrow International Trading Estate, London, on 26 November 1983, from a warehouse operated by Brink's-Mat, a former joint venture between US security company Brink's and London-based company MAT Transport. The bullion was the property of Johnson Matthey Bankers Ltd. Micky McAvoy and Brian Robinson were convicted of armed robbery. Most of the gold has never been recovered. Lloyd's of London paid out for the losses, and several shooting deaths have been linked to the case.

Heathrow Airport, also colloquially known as London Heathrow Airport and named London Airport until 1966, is the primary and largest international airport serving London, the capital and most populous city of England and the United Kingdom. It is the largest of the six international airports in the London airport system.