The London Borough of Richmond upon Thames in southwest London, England, forms part of Outer London and is the only London borough on both sides of the River Thames. It was created in 1965 when three smaller council areas amalgamated under the London Government Act 1963. It is governed by Richmond upon Thames London Borough Council. The population is 198,019 and the major communities are Barnes, East Sheen, Mortlake, Kew, Richmond, Twickenham, Teddington and Hampton.