Staying at Millennium Hotel London Mayfair 44 Grosvenor Square, London W1K 2HP will most definitely need time and cost efficient car hire service. Book Estate Car, Seater, Executive MPV or Saloon from London Heathrow Airport to Millennium Hotel London Mayfair or Millennium Hotel London Mayfair to London Heathrow Airport now. British Airport Transfer brings you the most realistically priced journey between London Heathrow Airport and Millennium Hotel London Mayfair with great comfort. Fill out the details for quick online quote.