According to the Borough's website, the London Borough of Merton (map) comprises the communities of Colliers Wood, Mitcham, Morden, Morden Park, Pollards Hill, Raynes Park, West Barnes, Wimbledon and Wimbledon Park. (Those linked to have their own ODP categories.) Wimbledon, Mitcham and Morden are traditionally Surrey towns , although Wimbledon has lost its Surrey address in favour of London SW19 and 20. Mitcham, Surrey has acquired, somehow, a Croydon postcode.