I've been there...
...many times. And so have scores of Withnail fans, each taking a souvenir - to the point that the place has been gutted. Even the sink where Marwood washed the spuds is gone. It's like a cave. Very recognisable from the outside, though.
It's at a place called Wet Sleddale in Cumbria, should anyone wish to visit.
Edit: I also live in a town prominently mentioned in the film, though it was not actually filmed there.
(, Thu 22 Jan 2009, 1:58, Reply)