I worked with George Lapka also at Brize I was there 1980 to 1983 he left before I did to go to Cosford ATC prior to retiring he lived in Wolverhampton.
He told me he flew Hurricanes at the start of the war supposedly during the Battle of Britain period before moving on to Spitfires and eventually Mustangs which he told me he was flying on D-Day staffing the beaches for the invasion and air support there after. However I have searched many sites and found no mention of him as a Battle of Britain pilot nor anything to confirm what I was told is true but he definitely was a Master Pilot so did fly as Sgt or Master aircrew in that period. There where also two Master Navigators at Brize at that time one in ATC George Elland interesting guy who explained the fine art of astral navigation to me on one nights shift then there was a Master Nav in charge of Flight Planning too he was Master Nav Edwards (first name escapes me) he lived in Witney and retired during my time at Brize I believe.