Clive Loehnis attended Lockers Park School and then joined the Royal Navy, graduating from the Royal Naval College, Osbourne, the Britannia Royal Naval College in Dartmouth, and the Royal Naval College, Greenwich. He became qualified in signals in 1928 and left the Navy in 1935. In 1938 he returned to the Signals Division of the Admiralty, where he earned the silver oak leaves of a commander before retiring in 1942 and going into the Naval Intelligence Division. When he was demobilised after the war, he joined GCHQ, at that time a semi-covert division of the Foreign Office.
- D. R. Nicoll, "Loehnis, Sir Clive (1902-1992), naval officer and civil servant", Oxford Dictionary of National Biography, Oxford University Press, 2004
- James Bamford, The Puzzle Palace
Sir Eric Jones
|Director of GCHQ
Sir Leonard Hooper
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