Phil R,
Where on earth would the Fulcrums have come from, Denmark? And with their range issues, where would they have been going, Norway?
There was no perceived manned air threat to the UK from about 1958 to 1979 ish, as the Soviet threat was IRBM/ICBM for which NO aircraft was a counter, then the Backfire/Fencer panic kicked in which led to an increase in UK AD assets, of which the 88 Hawk T1A's in a local point defence and MFF role were a small part. For most of the life of the Lighting it was a small UK force of 5 squadrons with an ID and shepherd away commitment.