The London Borough of Southwark (/ˈsʌðərk/ SUDH-ərk) in South London forms part of Inner London and is connected by bridges across the River Thames to the City of London and London Borough of Tower Hamlets. It was created in 1965 when three smaller council areas amalgamated under the London Government Act 1963. All districts of the area are within the London postal district. It is governed by Southwark London Borough Council.