Let me quote from '40 years at Farnborough' - 1978
'In one area, however, Britain (in the person of British Aerospace) still remained unquestionably supreme. The ski-jump take-off ramp for heavily-loaded Harriers was demonstrated twice daily, once by a Sea Harrier, once by a very comprehensively stocked GR.3........
....the Sea Harrier FRS.1 had made its first flight at Dunsfold on 21 August in the hands of John Farley, now chief test pilot, Duncan Simpson having joined SBAC and the Display Flying Control Committee. The aircraft involved, demonstrating at Farnborough, was to go on trials in HMS Hermes from 14 November....'
The GR.3(A) was XV789, the FRS.1 XZ450
brgds
Alan