Originally Posted by
Planemike
Just for the record... The "small aeroplane" is the TK4 G-AETK.
Which helpfully dates the photo to the latter half of 1937. The race number on the tail was presumably for that year's King's Cup Air Race, held at Hatfield on 11th September, where no doubt the photo was taken, and three weeks before the TK4 was destroyed in a fatal crash.