The aircraft is a Gannet AS.1 XA390 belonging to 820 Sqn FAA.
820 Squadron — Received nine Gannet AS. 1s at Eglinton on March 7, 1955. Embarked in HMS Centaur during January 1956 for operations in the Mediterranean and Far East, after which the squadron relinquished its Gannet AS. 1s into storage at Donibristle. Formed up at Eglinton on July 30, 1956, with eight Gannet AS. 1s. Embarked in HMS Bulwark in June 1957 but was disbanded on December 2, 1957
The tail marking 'B' would indicate it was from HMS Bulwark. I have seen a photograph of XA390 on the deck of HMS Bulwark dated 1st August 1957. So this event must have happened between then and December 1957.