The most expensive London property currently on the market is in Belgrave Square, with 11 bedrooms. Savills has the Knightsbridge property up for sale at £35 million. The most desirable area in London appears to be the N1 postocde area. It had nearly 10% of all property searches in May, and has topped the table for three months running. Zooming in even closer, the most popular street in London appears to be leafy Bishops Park Road in Fulham, which has been in the top two for three months in succession.