long-legged cat

pictured here is what i believe to be a long-legged cat.taken in derbyshire walking along a 5 ft wall.note the very small head,long legs and long tail.i saw one myself in west sussex after the floods of 2000 and they are unmistakeable.typical sighting reports read "looked like a black cheetah"or have the above description.they look very similar to the much documented "kellas cat" a wildcat/feral hybrid but have a more athletic build and a longer tail.they share with them,however,a common ancestry,i believe......