In reply to UKH Articles:
Sadly, the Priest Hole's fame has spread so far that it is now a massive rubbish receptacle. There are sleeping bags, rubbish and other undescribable stuff left up there (or was, last time friends of mine droped by - they brough a bag full out, but hardly made a dent, apparently). By all means go, but make sure you have your vaccinations up to date - it's 'orrible!
And, of course, we have to ask: why do folks trash these places? The answer is that the Priest Hole has had so much publicity (BBC, the Guardian, etc) that folks just see it as somewhere to go and have a party; they are not wild campers, they're just litter louts. It is a vicitm of it's own 'success' - that's why the locations of these places need to be kept secret.