The Final Answer

This aircraft did indeed exist and it’s history is to be found in ‘British Private Aircraft 1946-70’ Vol 2 by AWJG Ord-Hume published 2013, a mine of information. There are photos (PP 162-3) of the remains of the aircraft. Owner was apparently John Chapman who sadly died on take-off at Old Warden in 1966 in a Cessna 172. As a child I was given joyrides by John in his Aerona C3 from Clothall strip at Baldock, and in Swallow G-AFCL at Old Warden.