Lt. Fairfax and Lt. Carstairs
RAF Flight Lieutenants Fairfax and Carstairs are fictional characters in the BBC sitcom 'Allo 'Allo!, which ran from 1982 to 1992. They were portrayed by the actors John D. Collins and Nicholas Frankau, respectively.
The programme's pilot episode told that they had been shot down over Nazi-occupied France and later found by the Resistance. Resistance-leader Michelle forced René Artois, owner of Café René, to keep the airmen in hiding after the owner of their previous safe house had been shot. They were never officially discovered by the Germans, despite the fact that the town commandant Colonel von Strohm knew all about them. Every attempt by the Resistance to repatriate them ended in failure, and they had to remain in hiding throughout the entire show.
Often they would hide in a secret compartment under the bar or in a wardrobe in the bedroom of Rene's mother-in-law. It was under her bed that the pilots hid a wireless radio and the bedknobs would flash whenever there was an incoming signal, much to the old lady's discomfort. Usually, when their hiding place was opened, they would say with a very British accent, 'Hello!' and then they would answer the wireless or do whatever else they needed to do.