The aircraft in the unit changed throughout the war as further later marques came into the RAF's hands in various ways, including capture by Allied troops, forced or mistaken landings by German pilots, and defections. The flight co-operated with the RAF Film Unit, for which the usual British markings were removed and original German restored. Aircraft were then passed to the AFDU at (RAF Duxford 1940-1943) where they were extensively tested before passing them on to the flight. Several aircraft were lost to crashes, or damaged and then cannibalised for spare parts. Others were shipped to America for further evaluation. In March 1943, the unit moved to RAF Collyweston. Beginning in early 1944, the flight made a round of U.S. Army Air Forces bases in Britain. After D-Day, the perceived need for the flight declined.