The London Borough of Merton is a London borough in London, England. The borough was formed under the London Government Act 1963 in 1965 by the merger of the Municipal Borough of Mitcham, the Municipal Borough of Wimbledon and the Merton and Morden Urban District, all formerly within Surrey. The main commercial centres in Merton are Mitcham, Morden and Wimbledon, of which Wimbledon is the largest. Other smaller centres include Raynes Park, Colliers Wood, South Wimbledon and Wimbledon Park.