I'm doing a list, its so hard to find a website that has them all in one place and when you decide on a weekend away, invariably its a lastminute thing and you don't have time to be faffing around for hours on the web, so here you are:
Barnsley House, Cotswolds
Stunning location, gorgeous spa
Pebble Beach, Hampshire
Open air restaurant serving divine food with views of Isle of Wight
The Mill at Gordleton, Hampshire
Harvest House, Hampshire
The Bear Hotel, Berkshire
The Royal Oak, West Sussex
Jeakes house, Rye, West Sussex
Swan House, East Sussex
The Gallivant Hotel
Camber Sands , West Sussex
Limewood Hotel, Hamps
Spa and outdoor pool
Wingrove House, Friston, East Sussex
Plantation House, Norfolk
The Swan Inn, Surrey
The Fish House, West Sussex (Tried and tested 10/10)
private-hire hot tub gazebos in the garden, huge 42" tvs in rooms
Priory Bay, IoW
Foxhills Hotel, Surrey
nice spa!
The Hart & Garter Hotel, Windsor
Great Spa
The Trout at Tadpole Bridge, Cotswolds (on the hot list)
Gorgeous cosy rooms, divine food on the river
The Hand and Flowers , Bucks (on the hot list)
Some rooms with patio hot tubs!!
Windfalls Boutique Hotel, West Sussex
Perfect for Gatwick Airport
The Bull Ditchling, West Sussex
The Strand House, Rye, East Sussex
Hotel Terravina, Hampshire
Outdoor Pool!
The Miller of Mansfield, Reading (Tried and tested 10/10)
Gorgeous Rooms, idyllic setting
The Bath Arms at Longleat, Wiltshire
Gorgeous Rooms and idyllic setting
Jesmonds of Highworth, Wiltshire (Tried and tested 9/10)
Gorgeous big rooms, lovely outdoor terrace, divine menu
The Cary Arms, Babbacombe Beach, South Devon
Modern Rooms and cottages on the sea
The Elephant at Pangbourne, Berkshire
Quirky Luxury
The Hamptons, Ilfracombe, North Devon
Boutique Beach Chic
The Master Builders, Hampshire
Old School Boutique with boats
The New Inn at Coln, Cotswolds
Boutique idyllic, exceptional food
Beechfield House Hotel
Outdoor heated pool
The Urban Beach Hotel, Bournemouth
Thirty Two, Cotswolds
http://www.thirtytwoltd.com/
139 Bath, Bath
http://www.139bath.co.uk
The Halcyon, Bath
http://www.thehalcyon.com/
Clifton House, Bristol
http://cliftonhousebristol.com/
Plush Hotel, Bristol
http://bristol-airport-hotels-plush-hotel.com/accommodation/
Alderman Apartments (self catering), Bristol
http://www.alderman-apartments.co.uk/bristol-serviced-apartments.html
139 Bath, Bath
http://www.139bath.co.uk
The Halcyon, Bath

Clifton House, Bristol
http://cliftonhousebristol.com/
Plush Hotel, Bristol
http://bristol-airport-hotels-plush-hotel.com/accommodation/
Alderman Apartments (self catering), Bristol
http://www.alderman-apartments.co.uk/bristol-serviced-apartments.html
The Hoste Arms, Norfolk
The Burnham Market, Norfolk
West Stoke House, West Sussex
Sat Baines, Nottingham
L'Enclume, Cumbria
Michelin Star Restaurant
Les Bouviers, Dorset
The Christchurch Harbour Hotel, Dorset
Oak House No 1, Cotswolds
The Greenbank Hotel, Cornwall
Chilston Park Hotel, Kent
Deans Place, Sussex
Great Fosters Hotel, Surrey
Stunning food, outdoor pool, croquet lawn
Langshott Manor, Surrey
Nutfield Priory
Stunning with spa
The Powdermills Hotel, East Sussex
Outdoor pool
The Old Posthouse, Oxfordshire
Outdoor pool
The Kings Arms, Oxfordshire
The Old Parsonage Hotel, Oxfordshire
The Swan at Ascott, Oxfordshire
The Kingham Plough, Oxfordshire
The Red Lion, Warwickshire
Cross O' Th' Hill Farm , Warwickshire
The Howard Arms Ilmington, Warwickshire
The George Hotel, Warwickshire
The Whitehart Royal Hotel, Glouc
Moonfleet Manor, Dorset Coast with pool
Soar Mill Cove Hotel, Devon coast with pool
good search engine
CORNWALL
St Michael's Marazion
Blue Horizon Marazion
West Croft Guesthouse
The Old Quay House
The Rosevine
Trevalsa Hotel
Boskerris Hotel
Boscastle House
StMoritz Hotel
If you have had a bad experience at any of these please let me know so they can be binned!