The Mandarin Oriental is a great deluxe option - right in the centre of Knightsbridge opposite Harvey Nicholls. A beautiful old hotel professionally managed by one of the best deluxe groups. Many other deluxe London grand hotels could learn from this team - staff are well trained, welcoming, and the lights are on - something I can't say about another of the "great" London hotels.
A major plus: the flagship restaurant is Dinner by Hester Blumenthal right in your hotel - an experience in itself. The meals are inventively superb - which is no surprise; and this is a great value/experience dining option where wait staff are welcoming, knowledgeable about the food preparations, and determined to make your dining pleasure an experience.
This hotel really delivers!!More