Doesn't make sense. If you "caught" it in the back garden why is it shagging your car key on a piece of tinfoil? Do you leave your car key in the back garden (on a piece of tinfoil) as a lure? Is your entire back garden tin-foiled? If so, why? To protect your grass from fading? Alternatively, if you "caught" the damn thing, why did it not subsequently bugger off? Did you you tell it it was "it" or summat and it had to come into your house for interrogation? I mean, if I was it I'd have just flown off and dive-bombed you for good measure. It doesn't look dead so how did you persuade it to be photographed (and on a recognisable object in order to give somne sense of perspective as to it's size)? Did you hypnotize it or summat? There's a lot of questions need answering here.