Lancaster House, Stable Yard, St James's, City of Westminster, London, SW1A, United KingdomBritish Aircraft Corporation
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The treaty text ends "Done in duplicate at London, this 29th day of November 1962"; EBSCO[2] gives "signed on November 29, 1962" and the Flashbak[4] caption dates the signing photograph "November 29, 1962 in Lancaster House".On 29 November 1962 the British and French governments signed a treaty in London to build a supersonic airliner together, sharing work, cost and sales equally. The agreement, with no escape clause, started the programme that became Concorde.
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