I was in the Waterbeach ASF in the early 50’s and I recollect that when 253 was formed they had some NF-2s, later these were replaced with NF-3s.
I do not recollect any flying accidents, they certainly had a towing accident when another Land Rover ran into the wing of a Venom being towed back from the end of the runway. Unfortunately all the guys in the Land Rover were killed.
I left the RAF in Jan 56 and the NF-3s were shortly replaced with Javelins and 253 was renumbered 25.