FB - in early 60's I was on 58 Sqn at Wyton with Canberra PR7 & 9's. We were purely photo- recce (high & low!) with no armament (unless you include photo-flashes for night work!) i seem to remember (?) several FR sqns. with Hunter/Swift aircraft who carried guns and cameras - mainly in 2 TAF. I guess they were able to "look after" themselves if in trouble!
Bill