This may have been a large greenhouse, I do not know.
In 1947 the Fleet Air Arm decided to form Royal Naval Volunteer Reserve Squadrons. The first to be based at RNAS Stretton was 1831 Naval Air Squadron, a fighter squadron, which was reformed here on 1 June 1947. It was joined on 18 August 1952 by 1841 Naval Air Squadron, an anti-submarine squadron. Together, these two squadrons comprised the Northern Air Division which was formed at Stretton on 1 June 1952 and disbanded on 10 March 1957 together with its constituent units.