Contrary to what you believe mate ,I have done a fair amount of research but and I’m sorry to keep banging on about the same thing ,everything I looked into drew a blank .
I used to work on an estate in Gloucester that was huge ,encompassed the outskirts of Cirencester ,up to Birdlip Hill and almost to Cheltenham if you know that area and sighting were rife throughout the area .
Despite rigging up baits and lamping 4 nights a week for 3 years we never saw nothing that was actually a large cat .Few stray dogs and farm cats but nothing large .
Various sightings around where I live