Local elections were held in the United Kingdom in 1983. The results were a success for Conservative Prime Minister Margaret Thatcher, who soon afterwards called a general election in which the Conservatives won a landslide victory. The projected share of the vote was Conservative 39%, Labour Party 36%, Liberal-SDP Alliance 20%. The three major parties all made net gains at the expense of smaller parties and independents, despite a slight reduction in the number of councillors.