There was also a V2 rocket in there. The building was known as ‘The Pickle Factory’. Folklore has it that it was built back to front with the large doors facing away from the airfield, and so the foreman in charge of the project was ‘in a pickle’.
I remember the Hangar being called the TSR2 Hangar, late 78/early 79. Rumours were it contained a TSR2. Now I know they were true!!