English Channel latter part of the 19th century when Captain Matthew Webb made the first observed and unassisted swim across the Strait of Dover, swimming from England to France on 24–25 August 1875 in 21 hours 45 minutes. In 1927, at a time when fewer than ten swimmers (including the first woman, Gertrude Ederle in 1926) had managed to emulate the feat and many dubious claims were being made, the Channel Swimming Association (CSA) was founded to authenticate and ratify swimmers' claims to have swum the Channel and to verify crossing times. The CSA was dissolved in 1999 and was succeeded by
The Man Who Never Was (book) was to publish the story of Mincemeat. Over the course of a weekend Montagu wrote "The Man Who Never Was" (1953), which sold two million copies and formed the basis for a 1956 film. The security services did not give Montagu complete freedom to reveal operational details, and he was careful not to mention the role played by signals intelligence to confirm that the operation had been successful. He was also careful to obscure "the idea of an organised programme of strategic deception ... with Mincemeat being presented as a 'wild' one-off caper". In 1977 Montagu published "Beyond Top Secret