When i used to work on a golf course a few years ago we had a resident lynx ( and we can do without any golf links jokes), we used to see it killing
Rabbits while we were moving sprinklers arround at night. Eventually we cage trapped it and it turned out to be a very rare iberian lynx - it is now doing its "manly duty" as part of the captive breeding programme.
I have also seen a cheetah at large on Salisbury plain whilst working down there as a contractor. and a freind of mine claims to have seen a very large puma type cat in cannock chase.