Upminster is an electoral ward in the London Borough of Havering. The ward has existed since the creation of the borough on 1 April 1965 and was first used in the 1964 elections. It returns councillors to Havering London Borough Council.
Councillors elected by party at each general borough election.
There was a revision of ward boundaries in Havering in 2022 and the Upminster ward was unaltered.
The by-election took place on 10 August 2023, following the death of Linda Hawthorn.
The election took place on 5 May 2022.
There was a revision of ward boundaries in Havering in 2002.
The election took place on 3 May 2018.
The election took place on 22 May 2014.
The election on 6 May 2010 took place on the same day as the United Kingdom general election.
The election took place on 4 May 2006.
The election took place on 2 May 2002. As an experiment, it was a postal voting election, with the option to hand the papers in on election day.
There was a revision of ward boundaries in Havering in 1978. The boundaries of the ward were subject to a very minor boundary change on 1 April 1994 that did not affect the population.
The election on 7 May 1998 took place on the same day as the 1998 Greater London Authority referendum.
The election took place on 5 May 1994.
The election took place on 3 May 1990.
The election took place on 8 May 1986.
The election took place on 6 May 1982.
The by-election took place on 12 March 1981, following the resignation of Rodney Chamberlain.
The election took place on 4 May 1978.
For elections to the Greater London Council, the ward was part of the Havering electoral division from 1965 and then the Upminster division from 1973.
The election took place on 2 May 1974.
The election took place on 13 May 1971.
The election took place on 7 May 1964.