Hammersmith & Chiswick.

Hammersmith and Chiswick is a dense west London seat of about 113,885 residents, younger and more graduate-heavy than the national norm, with a median age of 36 and roughly three in five holding a degree. Its weight sits in the Hammersmith and Fulham built-up area, home to about two-thirds of residents, with the Chiswick end of Hounslow making up most of the rest. Two London borough authorities run local services: Hammersmith and Fulham, covering ten of the seat's wards, and Hounslow, covering three. A seat split between two boroughs is itself a feature of the place, dividing where inner London gives way to the riverside suburbs.

Politically, the seat leans Labour but is not uniform. Across the thirty-one most recent ward contests, in May 2026, Labour took the clear majority, the Conservatives held a compact bloc in the Chiswick wards, and the Greens took one. Both boroughs remained under Labour control, though the Conservative showing in Chiswick suggests a durable local divide rather than a drift. At the 2024 general election, the first on these boundaries, Labour won with 52.3% to the Conservatives' 19.1%, a margin of better than two to one. Andy Slaughter, the Labour member since 2005, has registered no whipped dissent in recent months.

The seat appears settled rather than contested, its recent coverage administrative in tenor, turning on council-tax setting and the funding pressures facing both boroughs. Crime data shows several acquisitive categories -- shoplifting, vehicle crime and anti-social behaviour among them -- running well above the constituency average. On the figures available, Hammersmith and Chiswick looks a comfortable Labour hold at Westminster, with Chiswick the one corner where the local picture diverges.