Smuj
You might be confusing two separate incidents at Akrotiri. The one involving Martin Bee occurred on 23/5/74 (XS928) and indeed was a titanium fire which led to the No.1 engine winding down rapidly. There was no fire warning as the fire detection system had been put out of action.
Another incident took place on 18/2/74 with a 56 Sqn F.6 (XR759) flown by John Ward from the OCU who was on a standardisation check. He had a control restriction where the stick could not be moved aft of neutral. He got the aircraft down by putting the No.1 engine into reheat to provide pitch control and was given an AFC for saving the aircraft.