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Westminster

Every election cycle we have data for, most recent first.

4 cycles in our data
21.9% all-time seats unfairly awarded (37 of 169 across 4 cycles)

Cycles

Council composition as of 2026

54 councillors, by party. One square per seat. Source: opencouncildata annual snapshot — reflects the council at the end of 2026 (after that year's elections, by-elections and defections). Hover any seat for the party.

Most recent election (2026)

In 2026, 54 seats were up across 18 wards. The table below shows what each party actually won — alongside what they would have won if the 54 seats had been shared in proportion to votes received (how, with caveats). The Δ column is the actual seat count minus the proportional seat count — positive numbers are parties First-Past-the-Post over-represented; negative are parties it under-represented.

PartyVotesVote %Seats won% of seatsProportional seatsProportional %Δ
Conservative Party47,61935.1%3259.3%1935.2%+13
Labour Party40,98630.2%2240.7%1731.5%+5
Green Party24,10517.7%00.0%916.7%-9
Reform UK14,61010.8%00.0%611.1%-6
Liberal Democrats8,3896.2%00.0%35.6%-3
Independent570.0%00.0%00.0%0
Workers Party of Britain540.0%00.0%00.0%0
Total135,820100.0%54100.0%54100.0%0

Vote share vs seats won

The top bar is each party's share of votes cast in this council. Below, one square per seat, coloured by the party that won it — first the actual First-Past-the-Post result, then what a proportional method would have produced from the same vote totals. Divergence between the bar and the actual grid is the indictment of the method.

Vote share
Actual seats
Proportional seats

Full ward-by-ward results for 2026 →

Composition history

One row per opencouncildata annual snapshot — the council at the end of each year (after that year's elections, by-elections and defections). Newest first; hover any seat for the party.

2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Ward by ward

Each row is a ward, each column a cycle. Each cell shows the top-of-poll candidate's party (swatch) and their share of valid ballots. Wards are matched by name across cycles — boundary reviews can mean a ward of the same name is a slightly different area in a later cycle.

Ward2016201820222026
Abbey Road68%53%45%
Bayswater41%61%39%
Bryanston and Dorset Square54%
Church Street70%78%76%44%
Churchill48%
Harrow Road80%77%43%
Hyde Park54%47%43%
Knightsbridge and Belgravia82%66%52%
Lancaster Gate51%46%40%
Little Venice52%48%45%
Maida Vale49%65%42%
Marylebone47%44%
Marylebone High Street61%
Pimlico North53%47%
Pimlico South52%42%
Queen's Park80%46%
Queens Park81%
Regent's Park54%54%52%
St James's54%50%46%
Tachbrook54%
Vincent Square53%48%49%
Warwick64%
West End45%51%42%
Westbourne73%75%44%