John Sinclair

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Sir John Sinclair
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Occupation Army officer; Chief of SIS
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Sir John Sinclair was head of the Secret Intelligence Service (MI6) from 1952[1] to 1956.[2]

Buster Crabb affair

Sinclair's time as Chief ended after the Buster Crabb affair. In April 1956 a former naval diver working for MI6, Lionel 'Buster' Crabb, disappeared during an unauthorised underwater operation against the Soviet cruiser Ordzhonikidze in Portsmouth harbour. Dick White of MI5 then replaced him.[3]

Notes

  1. ↑ Stephen Dorril, MI6: Inside the Covert World of Her Majesty's Secret Intelligence Service, Touchstone, 2002, p.494.
  2. ↑ Stephen Dorril, MI6: Inside the Covert World of Her Majesty's Secret Intelligence Service, Touchstone, 2002, p.621.
  3. ↑ Stephen Dorril, MI6: Inside the Covert World of Her Majesty's Secret Intelligence Service, Touchstone, 2002, p.621.