Danny … "I can recall only two weeks' "rest cure" at Manby,"
From that I imply that your ATC Certificate of Competence (RAF F5994) was endorsed for both Manby and Strubby? Were you examined by the LEO in both Towers? Or didn't they take that aspect too seriously back then?
Certainly by 1965, Manby was a nasty little hornets' nest of JPs, and operated completely different radar equipment to Strubby (which substituted complexity for intensity). No "rest cure" at Manby then! And controlling endorsements were definitely by Unit and control position - only in exceptional circumstances could the Examining Board authorise "transfer of endorsements". When I went from SATCO/LEO Waddington to SATCO/LEO Stanley, that required a personal visit and briefing from a Board Examiner … although curiously I was only endorsed as LEO Stanley, not for any control positions: I assume that was regarded as a catch-all endorsement.