I think it might be a Varsity. In some of the other 'stills', the nose of a Dakota can be seen, between two of the hangars. At the time of filming, the airfield was used by both civilian and RAF aircraft, although the USAF may have still been in the process of handing over, as they departed in 1962. Ten years later, when '633 Squadron' was filmed there, numbers of civilian light aircraft could be seen in the background of some of the flying / landing scenes.
Sadly, the tech site was demolished, and is now occupied by H.M. Prison 'The Mount', although the main runway and taxi-ways are still present.