It could be an Ercoupe or an Alon A2 since the Alon A2 Aircoupe was a version of the classic Ercoupe, and manufacturered between 1964 and 1967. But then it could be Forney F1A Aircoupe G-ARHC which used to be based at Woodvale. It is believed that the aircraft still flying today 40 years on and based at Little Gransden (north of London).
Little Gransden Airfield (IATA: N/A, ICAO: EGMJ) is a licensed airfield located near the village of Little Gransden, 5 nautical miles (9.3 km) southeast of St Neots, Cambridgeshire, England.
G-ARHC has a very similar colour scheme.