Friends of mine and I had lunch at Cliveden House.
The drive on the way to the House from the spectacular fountain that would grace the gardens of Versailles, is simply pure magic. The quintessential country house is there to welcome you.
The grounds remind you of Vaux le Vicomte (to me the perfect French castle) and the Long garden is worth a movie by itself.
I did not know that Lady Astor has taken her cue from Ann Boleyn when she selected the décor of the ground floor rooms. This is very Tudor while you would expect over the top Regency ormulus or comfortable Edwardian furniture.
The view from the dining room is enchanting for lack of better world and you can see the River glimmer in the background.
The food was perfectly fine (portions were found a bit small after so much walking in the Park) and the Sommelier gave extremely skillful advice.
All in all a great experience.
If I have only one suggestion to make: do not let cars park in front of the house. It destroys the illusion of walking back to the times when Lady Astor welcomed King Edward VII.