Captain Eric Brown, in his book 'Wings of the Luftwaffe' describes in great detail 17 German aircraft he flew as the Royal Navy's Chief Test Pilot at the Royal Aircraft Establishment at Farnborough.
In his foreword he mentions that in total he flew 55 different German aircraft, mostly at Farnborough but quite a number of them in Norway, Denmark, Holland, Belgium, Austria and Germany itself. His book lists the following aircraft.
Focke-Wulf 200C
Focke-Wulf 190
Focke-Wulf 189
Arado 234B
Heinkel 162
Heinkel 177
Heinkel 111
Heinkel 219
Junkers 87
Junkers 88
Junkers 52/3M
Dornier 217
Dornier 335
Messerschmitt 109
Messerschmitt 262
Messerschmitt 110
Messerschmitt 163
I wonder how many of these aircraft were seen in the skies over England and Europe with British markings during and after the war?