Rayleigh and Wickford is a constituency[n 1] represented in the House of Commons of the UK Parliament since its 2010 creation by Mark Francois, a Conservative.

[n 2] This small-town studded portion of rural Essex reaches out almost as far as the North Sea beside Rochford and has income levels on average slightly above the national average, low unemployment,[2] and little social housing.

[3][4] The seat was created for the 2010 general election following a review of the Parliamentary representation of Essex by the Boundary Commission for England.

Further to the 2023 Periodic Review of Westminster constituencies, which came into effect for the 2024 general election, the composition of the constituency is as follows (as they existed on 1 December 2020): Minor loss of sparsely populated area in the east of the constituency to the newly named Southend East and Rochford seat.

1 Following a local government boundary review which came into effect in May 2024,[7] the contents in the Borough of Basildon now comprise the Wickford North and Wickford Park wards and the part of the Castledon & Crouch ward situated in the civil parish of Wickford.