Romford is a constituency[n 1] in Greater London represented in the House of Commons of the UK Parliament since 2001 by Andrew Rosindell, a Conservative.

At the 1935 general election there were 167,939 people registered to vote, making Romford the largest constituency in the country.

The revised boundary coincided with the municipal borough of Romford, which had been enlarged in the 1930s to include Havering-atte-Bower and Noak Hill.

The 1918 revision removed these urbanised places, replacing them with the rural parishes of Cranham (population 489 in 1911), Wennington (364) and the semi-rural Great Warley (2,051), Rainham (1,972) and Upminster (2,468).

During the interwar period the large London County Council estate at Becontree was constructed with around 23,000 homes in the parishes of Barking and Dagenham.

There was suburban housing growth in most parishes, including some large estates such as Elm Park Garden City.

The 1945 revision left the constituency with the town of Romford, the Collier Row and Gidea Park suburbs and the more rural Havering-atte-Bower and Noak Hill.

Romford Borough Council built post-Second World War estates at Collier Row, Chase Cross and Rise Park.

Another large London County Council estate of 25,000 homes was constructed at Harold Hill and completed in 1958.

[7] Although Romford has been highly marginal in terms of majorities obtained through much of the 20th century, its boundaries have changed significantly.