London South West (European Parliament constituency)

London South West was a constituency electing one Member of the European Parliament (MEP) by the first-past-the-post system. It was created in 1979 and abolished in 1999 when it was replaced by the multi-member London Constituency, using a system of proportional representation.

European constituencies were formed by the grouping of UK Parliamentary (Westminster) constituencies.

When London West was created in 1979 it consisted of ten Westminster constituencies: Battersea North, Battersea South, Kingston upon Thames, Lambeth Central, Putney, Richmond, Surbiton, Tooting, Twickenham and Vauxhall.

United Kingdom Parliamentary constituencies were redrawn in 1983 and the European constituencies were altered in 1984 to reflect this. The revised seat comprised the following Westminster constituencies in Greater London: Battersea, Kingston upon Thames, Mitcham and Morden, Putney, Surbiton, Tooting and Wimbledon, and the Epsom and Ewell constituency in Surrey. The same boundaries were used in 1989 and 1994.

The first election in 1979 was won by Shelagh Roberts of the Conservative Party. In 1989 Anita Pollack of the Labour Party won the seat and held it until its abolition in 1999.