
Probably not what you're looking for Maisiesmum, but can I put in a shout for The Old Oaks in Glastonbury Somerset. It is a camping & touring park which has won many awards as being the best Adult site - no kids allowed.
It's set in the lee of Glastonbury Tor with loads of walks, has a farm shop selling local produce, and also had dog shower room and a secure exercise paddock. There is also a minibus service to local towns and I think they have just secured a dog-minding service as well. They also have swanky glamping pods - like a mini-cabin - [dogs not allowed in them unfortunately].
A public footpath runs through their site so I have seen the facilities first-hand and they didn't blink an eye when we "borrowed" the dog shower on our way through, to de-stink the lovely Mrs. Rue de Malinois whose hobby is collecting & wearing wild animal dung. There are a lot of badgers in that area!
The Old Oaks themselves are two majestic oak trees named Gog and Magog, believe to be around a thousand years old, and located on the edge of the campsite itself. Many people walk the mile or two from the town just to see these legendary trees.
http://www.facebook.com/theoldoakswww.theoldoaks.co.uk
I have no affiliation with them at all but have seen their setup (plus friend stayed there) and I know the area and they seem to be going the extra mile for dog owners too.