If just east of Bath isn't too far for you, Lucknam Park looks superb and the chef is fantastic. Although if you go there I will be very as we were supposed to go this year for anniversary but no one will babysit for us overnight
ladymuck, you need the Mr and Mrs Smith Hotel Guide for UK/Ireland. It is the definitive guide to the most stylish places to stay. I have stayed in 3 places they have recommended and they are the best I have ever tried. We are trying their recommendation for Venice in September and would never have found it otherwise, a 16th century Palazzo with a water landing in the reception!! I can tell you the recommendations for about 2 hours away from you are:
The Cotswold House Hotel www.cotswoldhouse.com
Stoke Park Club www.stokeparkclub.com
le manoir aux quats saisons
Barnsley House www.barnsleyhouse.com
Whatley Manor www.whatleymanor.com
but if you can get hold of the book its worth it, the advice is the best and the pictures are great.