I flew in DH 84 Dragon G-ADDI from Luton on a sightseeing trip on 8 Dec 1964. The flight lasted about 20 min and we 'surveyed' Hatfield and Radlett(it was a weekend so they were both closed)
The flight represented several 'firsts; for me:-
First in a biplane.
First in a civil registered aircraft (only flown in RAF aircraft as an ATC cadet prior to that)
First with a female pilot - Claire Roberts; wife of the owner/operator of tha aircraft.