A 10-minute stroll from Harrods in Knightsbridge takes you to an elegant residential street lined with whitewashed houses, chic boutiques and rather good restaurants. Walton Street is where Anya Hindmarch and Jo Malone launched their businesses, and where Princess Marie Chantal of Greece has her children's wear boutique. Designer Tania Mohan lived in Walton Street for two years in the '90s when she was studying law. It feels like coming full circle as she is opening her new boutique there on June 8, her first outside Hong Kong. Her online store is set to debut mid-June.