The UK Green Party has achieved its strongest local election performance in history, reshaping the British political landscape and increasing pressure on the Labour government. Gains among younger and highly educated voters suggest the rise of the Greens is no longer a marginal phenomenon, but part of a wider fragmentation of UK politics.
UK local elections expose the fragmentation of British politics
The latest UK local elections delivered a major breakthrough for the Green Party, which secured a record number of councillors and key local victories across Britain. The results, announced after the 7 May vote, confirmed the growing erosion of the traditional two-party system and created a new political challenge for Labour, currently in government.
“The British two-party system is dead and buried,” declared Zack Polanski, leader of the Greens, commenting on the outcome of the elections.
Together, the Greens and Reform UK inflicted a significant setback on Labour, highlighting the increasing fragmentation of the UK political system. The Green Party secured 441 council seats, took control of five councils, and won two mayoral races, marking the strongest electoral performance in its history.
Greens expand local power across England, Wales and Scotland
Before the elections, the Greens held fewer than 1,000 councillors nationwide. Following the latest vote, the party now counts nearly 1,350 councillors across the United Kingdom, with 441 elected in this single electoral round.
The Greens also achieved another historic milestone by taking control of five councils for the first time. Previously, they had not controlled any local authority. In several councils, no party achieved an outright majority, a “no overall control” scenario partly driven by Green gains at the expense of larger parties.
The party also entered the Senedd for the first time with two seats and secured 15 seats in the Scottish Parliament, another record-breaking result.
Among the most symbolic victories were the mayoral elections in Hackney and Lewisham. In Hackney, Zoë Garbett defeated the Labour candidate, while Liam Shrivastava secured victory in Lewisham against Labour opponents.
Polanski described the Hackney result as a “historic victory.”
Young and highly educated voters drive Green momentum
Current national vote share projections place the Greens at 18%, second only to Reform UK and slightly ahead of both Labour and the Conservatives, estimated at 17% each. The projection, calculated by the BBC based on local election results, underlines the scale of the Green Party’s advance compared with its historical performance.
According to an analysis by The Guardian, the Greens performed particularly well among younger voters and in highly educated urban constituencies.
In electoral districts where less than 10% of residents are over the age of 65, Labour secured 32% of the vote while the Greens reached 31%. Reform UK, the Conservatives and the Liberal Democrats each received around 11%.
In England specifically, the Green Party recorded stronger performances in areas with higher education levels, reinforcing a growing trend linking climate-focused politics with younger urban electorates.
Climate politics increasingly central to UK electoral dynamics
The Green Party’s rise reflects broader shifts within British politics, where environmental issues, housing affordability, public services and distrust toward traditional parties are increasingly reshaping voter behaviour.
Commenting to Rinnovabili, Mitya Pearson, Assistant Professor in Politics of Climate Change at the University of Warwick, analysed the Greens’ electoral performance and its implications for the future of UK climate politics:
“In my assessment, in general, commentators expected it to be a positive and successful night for the Greens and they met those expectations. This result confirms the Greens have a very good opportunity to substantially increase their number of MPs at Westminster at the next general election, and that they are a big electoral threat to Labour. However, it also demonstrated that they are particularly popular in places with a certain profile, generally inner-city areas with lots of graduates. So it seems less likely that they will win lots of additional Westminster seats outside these types of areas.“
