Knightsbridge - The area as a whole has some classy stores and boutiques and as one of the most expensive areas of London, this is reflected in the large number of boutique style shops.
Harrods - One of the most exclusive stores in the world and sat between 87 - 135 Brompton Road in Knightbridge,

Savile Row - Famous worldwide as a place for being able to buy some of the quality custom made suits in the world, this is situated in the exclusive Mayfair area - another very expensive and classy area in London. If you have the money and need a suit then Savile Row is the place to head to.