Amazing co-incidence. I switched on the telly last evening (20 Oct) and there was an episode of 'The Persuaders' (Roger Moore/Tony Curtis) showing. Only saw the last 10 min but a car and a minibus drove along a road and turned into an airfield, small guardroom at the gate and newish looking T2 hangar in the background.
There were one or two other shots amongst the hangars and then some out on the airfield which was pretty obviously Bovingdon. All 4 T2s were re-clad with new unpainted corrugated iron in the mid to late '60s just before the airfield closed so that gives a rough date. This reminded me that I'd also seen a scene at Bovingdon (only 10 or 15 seconds) in one episode of 'The Prisoner'.
I dare say the studio shots for both these series were filmed at Elstree which isn't too far away from Bovingdon.