Squadron leader John Douglas Derry DFC (5 December 1921 – 6 September 1952) was a British test pilot who is believed to be the first Briton to have exceeded the speed of sound in flight.
Squadron leader John Douglas Derry DFC (5 December 1921 – 6 September 1952) was a British test pilot who is believed to be the first Briton to have exceeded the speed of sound in flight. (en)