Could have done without a tour of the East End, especially on a Monday night! Think travelling is the worst thing about working in London, although I suspect most commutes can be hellish in any city.
Some of my walking group take home road kill if it looks reasonably intact, pigeons etc and I know a few who've brought home a pheasant; most of them around my way are wild, so I think it's allowed, although if the bird has a ring on it's leg then presumably it does belong to someone but I don't think they're a protected species here, they certainly seem common enough in certain areas. I think with deer I read somewhere that you have to check with the landowner first if it came from a farm - again, I assume it would have some sort of tag or registration on it somewhere, but I do know people who've taken one home (although I hasten to add they didn't hit it, they just found it). I think most of the deer in my part of Essex probably belong to either Epping Forest of the City of London Corporation, but I'm not sure what the regulations are, except they're always saying there are too many of them and they cause a lot of damage to the forest.