There is something odd here. No 1(F) Sqn had begun Harrier conversion at the end of June 1969, had moved from West Raynham to Wittering, and no longer had any Hunter FGA9s. Nor, according to the information I have, did they go to El Adem in Sept 69.
However: their Hunters were still at West Raynham, as was 54 Sqn, whose Harrier conversion (and renumbering as 4 Sqn) did not start until about early 1970.
It is possible that 54 were using an ex-1 Sqn airframe, still in 1 Sqn colours.
I have checked listed losses, and no Hunter is shown for that date; so, if one was bent, it seems to have been repairable.