Brigg & Immingham.

Brigg and Immingham is a seat of small Humber-side towns rather than a single dominant centre, spread along the south bank of the estuary. No settlement holds more than an eighth of the population: Barton-upon-Humber and Humberston and New Waltham each sit near 11,900 residents, ahead of the slice of Grimsby inside the boundary, the port town of Immingham, and the market town of Brigg. At a median age of 48, overwhelmingly white and with about a quarter of adults degree-educated, the area reads older and less graduate-heavy than the national profile. Two unitary authorities run local services: North East Lincolnshire, covering five of the seat's wards, and North Lincolnshire, covering two.

That two-council split shapes local politics as much as the parliamentary picture. The most recent ward contests, held in May 2026 across the North East Lincolnshire side, were taken by Reform UK in every case, from Immingham and Scartho to the Wolds. On the North Lincolnshire side the last contests on file, in 2023, went to the Conservatives, so the ward map appears to be in transition rather than settled. The parliamentary picture is steadier on the figures available: the Conservatives won the 2024 General Election on 37.4 per cent, some eight points ahead of Labour, with Martin Vickers, the area's MP since 2010, returned again.

The direction-of-travel points to a Conservative-held seat under visible pressure from Reform at ward level rather than one comfortably safe. Recent local coverage has had a workmanlike, governance-focused tenor, weighted toward port and industrial development around Immingham and toward how the two councils position themselves on local-government reorganisation. The standing implication is of a constituency competitive beneath the surface: held by one party at Westminster, increasingly contested in its wards.