The main hangar could house two Heralds with space for a third to be nosed in for say an engine change. There was a separate support workshop in the next hangar (Westair Cessna maintenance) used as an airframe component bay, spray booth, machine shop and technical library.
The main hangar also contained a stores, crewroom, Inspectors office and electrical bay, it was all rather run down with a leaking roof and inadequate heating.
A hardstanding outside the hangar could be used for minor defect rectification, engine runs and so, there was also a compass base and a designated area for high power ground runs.
I didn't work there for very long, June 1979 until the end in late 1980 when I moved down to Norwich to work for Air UK, it was a cheerful place to work with many characters, many of whom had been there for quite some time.