Great Grimsby and Cleethorpes

Great Grimsby and Cleethorpes is a constituency of the House of Commons in the UK Parliament. Further to the completion of the 2023 review of Westminster constituencies, it was first contested at the 2024 general election and has been represented in Parliament by Melanie Onn of the Labour Party since then. Onn was previously MP for the predecessor constituency of Great Grimsby from 2015 to 2019. The Conservative Party candidate, Lia Nici, was MP for Great Grimsby.

The constituency name refers to the Lincolnshire towns of Great Grimsby and Cleethorpes.

The Great Grimsby and Cleethorpes constituency is located in Lincolnshire and covers the connected towns of Grimsby (sometimes called Great Grimsby to distinguish it from the nearby village of Little Grimsby) and Cleethorpes. Grimsby was traditionally reliant on the fishing industry. The town continues to host the majority of the United Kingdom's fish-processing industry, however it experienced post-industrial decline after the Cod Wars of the 1970s which limited the ability of British ships to fish in Icelandic waters. Grimsby has high levels of deprivation, with much of the town falling within the top 10% most-deprived areas in England. Cleethorpes is a seaside resort town with a greater focus on tourism, and is comparatively wealthier than Grimsby. House prices in the constituency are very low, with the average price being less than half the national average.

In general, residents of the constituency have very low levels of education, income and professional employment. White people made up 96% of the population at the 2021 census. At the local council, most of the constituency is represented by Labour Party councillors, with some independents elected in the west of Grimsby and some Conservatives elected in Cleethorpes. Voters in the constituency overwhelmingly supported leaving the European Union in the 2016 referendum; an estimated 71% voted in favour of Brexit, making it one of the top 15 most Brexit-supporting constituencies out of 650 nationwide.

The constituency is composed of the following electoral wards of the Borough of North East Lincolnshire:

• Croft Baker, East Marsh, Freshney, Haverstoe, Heneage, Park, Sidney Sussex, South, West Marsh, and Yarborough.

The seat covers:

• The previous Great Grimsby constituency, excluding the Scartho ward
• The town of Cleethorpes from the Cleethorpes constituency (abolished, with remaining parts forming the basis of the new constituency of Brigg and Immingham)

Great Grimsby prior to 2024

• parliamentary constituencies in Humberside

• List of parliamentary constituencies in the Yorkshire and the Humber (region)

• Great Grimsby and Cleethorpes UK Parliament constituency (boundaries from June 2024) at MapIt UK