Both a robust online retailer and a chic small chain of boutiques, Matches Fashion works with more than 400 known and soon-to-be-known designers. From Isabel Marant to Gucci, Max Mara to Saint Laurent, it's all under this one roof. In addition, its No. 23 private shopping location is inside an 18th century townhouse in Marylebone. It has six floors of merchandise, a place for one-on-one and private appointments, and also hosts luxury trunk shows and designer launches.