UPDATE:

The following information regarding the impact on No 35 Squadron aircraft is taken from the squadron’s Operations Record Book

“On Monday 20th September, 2 x 1000lb bombs exploded accidentally some 150 yards from the squadron dispersal and several of the squadron’s aircraft were damaged. The damage to most was very slight but one aircraft WK133 received damage which has entailed placing it CAT3. A piece of shrapnel entered the port lower mainplane skin inboard of rib 6 and ricocheted forward passing through rib 6, the main spar and rib 7, after which it passed through the trailing edge of the aileron. The top skin of the mainplane was slightly buckled along the path of the shrapnel. As a result of this damage, the aircraft needs a complete port mainplane change”