As far as i ma aware it is alot more difficult to keep large reps in the uk. You will require a D.W.A. licence (dangerous wild animal) Almost impossible to get one these days for things like caymen, & venomous species (all devenomed). The RSPCA are also trying to get an EU wide ban on private citizens keeping almost any kind of reptile. I am waiting for a copy of the report (200pages+) from the RSPCA 3weeks know. I will post the URL for highlights of the report when i get it.