I joined the Coastal Command Com Flight from 152 Sqn in Bahrain in September 1961, living in the Officers mess at CC HQ at RAF Northwood. We used to traval up to Bovingdon in a J2 daily, where we had 4 Ansons and a Valetta based. We moved to live at Bovingdon about 6 months later. Then I left when my Argosy course started in Sept 1962. Apart from the Met men, I can't remember any Civilians in the tower.