My father was on 111 Sqn and 72 Sqn, Spitfires, 1941-42 at North Weald, Hornchurch and Biggin Hill. The pub he and his chums used to use was "The Jail", just behind one of the dispersals at Biggin. Seem to remember nipping in there in the mid-70s with him and my mother and he recognised a few of the bits and pieces that were still there.
No idea what it is like these days.
jf