Key Takeaways
- The May 2025 local elections in England, plus contests for London mayoralities, the Welsh Senedd and the Scottish Parliament, acted as a proxy for national sentiment because no general election is due until 2029.
- The Conservative Party continued its post‑2024 decline, losing further ground to the right‑wing Reform UK, which won control of several councils and became Wales’ second‑largest party.
- Labour suffered a seismic setback in Wales, where First Minister Eluned Morgan lost her seat and announced her resignation, while the party’s traditional strongholds in England showed only modest resistance.
- The Scottish National Party retained its dominance in Scotland, reversing the Labour gains seen in the 2024 Westminster vote.
- The Green Party made symbolic breakthroughs, electing Zoë Garbett as the first directly‑elected Green mayor in Hackney, but its seat gains were far outstripped by Reform’s surge.
- Collectively, the results suggest the historic two‑party duopoly of Labour and Conservatives is effectively over, with voters gravitating toward insurgent parties on both left and right.
- However, the durability of support for Reform and the Greens remains uncertain amid growing media scrutiny of their policies and candidates.
- Prime Minister Keir Starmer faces mounting pressure over controversial appointments, repeated policy U‑turns, and speculation about an imminent internal Labour leadership challenge.
Context and Significance of the 2025 Local Votes
Although the prime minister’s name did not appear on any ballot, the May 2025 elections were widely interpreted as a barometer of public anger toward the national government. With no general election scheduled until 2029 and no midterm‑style vote to channel dissatisfaction, these local contests—covering more than 5,000 English councils, a handful of London mayoralities, and the devolved legislatures of Wales and Scotland—provided the only immediate outlet for voters to express their displeasure. Historically, British local elections are low‑key affairs, but the absence of a national poll turned them into a de‑facto referendum on the performance of Labour’s Keir Starmer and the broader political establishment.
Conservative Party’s Continued Erosion
The Conservative Party, which governed for 14 years before a humiliating defeat in 2024, kept bleeding support. Right‑wing voters who had previously backed the Tories increasingly drifted to Reform UK, a party that has capitalised on anti‑immigration sentiment and economic discontent. Despite the losses, party leader Kemi Badenoch attempted to put a brave face on the outcome, insisting there were “signs of renewal everywhere that we are standing.” The reality, however, was a clear continuation of the Conservatives’ downward trajectory, suggesting that their traditional base is fragmenting under pressure from newer, more populist rivals.
Reform UK’s Breakthrough Performance
Reform emerged as the big winner of the night. The party seized control of several local councils across England and, crucially, became the second‑largest party in Wales behind Plaid Cymru. This marked a dramatic shift in Welsh politics, where Labour had enjoyed over a century of dominance. Reform’s success was fueled by its hard‑line stance on immigration, its promises to cut bureaucracy, and its appeal to voters disillusioned with both major parties. The party’s gains were not merely symbolic; they translated into concrete administrative power in a number of areas, giving Reform a platform to implement its agenda at the grassroots level.
Labour’s Political Earthquake in Wales
In Wales, the results constituted a political earthquake for Labour. First Minister Eluned Morgan lost her seat in the Senedd and promptly announced her resignation, declaring, “The people of Wales rejected Welsh Labour.” This loss ended Labour’s long‑standing hegemony in the nation and highlighted a growing alienation among Welsh voters who feel ignored by the London‑centric Labour leadership. While Labour retained some strength in English urban areas, the Welsh setback underscored the party’s vulnerability to nationalist and insurgent challenges on multiple fronts.
Scottish National Party’s Resilience
Contrasting with Labour’s woes, the Scottish National Party (SNP) continued its domination of Scottish politics, having held power for 19 years. The SNP reversed the setbacks it suffered in the 2024 Westminster election, where Labour had seized dozens of Scottish seats. The party’s success in the 2025 Holyrood vote reaffirmed that, despite occasional fluctuations, the SNP remains the predominant force in Scotland, buoyed by its pro‑independence platform and its reputation for competent management of devolved responsibilities such as health and education.
Green Party’s Symbolic Wins and Limited Seat Gains
The Green Party entered the elections with hopes of a breakthrough, particularly in London and other metropolitan areas where Labour’s traditional support is strongest. The party did increase its overall vote share, but its gains in terms of seats were modest compared with Reform’s surge. Nevertheless, the Greens celebrated a historic milestone: Zoë Garbett became the first directly‑elected Green mayor, winning in the former Labour stronghold of Hackney. This victory was hailed by Green leader Zack Polanski as evidence that younger, liberal voters are increasingly disenchanted with Sir Keir Starmer’s centrist drift, especially his tougher rhetoric on immigration and cautious economic agenda.
The End of Britain’s Post‑War Two‑Party System?
Taken together, the election outcomes signal a potential terminus for the postwar two‑party system that has seen power oscillate between Labour and the Conservatives, with the Liberal Democrats relegated to a perennial third place. Voters appear to be abandoning the established duopoly in favor of insurgent alternatives on both the left (Greens, Plaid Cymru) and the right (Reform UK, SNP). The shift is not merely a protest vote; it reflects a structural realignment driven by concerns over immigration, cost‑of‑living pressures, perceived elitism, and a desire for more responsive, locally accountable governance.
Scrutiny and Questions About the Insurgents’ Longevity
Analysts caution, however, that the durability of support for these new forces remains uncertain. Reform UK has faced intense media scrutiny over the backgrounds of some of its candidates and the feasibility of its policy proposals, particularly regarding public spending and immigration controls. Likewise, the Green Party’s agenda—often perceived as radical on issues such as net‑zero targets and wealth redistribution—has attracted criticism about its economic pragmatism. Whether these parties can translate protest votes into sustained governing capability will depend on their ability to professionalise their organisations, broaden their appeal beyond niche constituencies, and deliver tangible results at the local level.
Keir Starmer’s Mounting Pressures and Speculated Leadership Challenge
Prime Minister Keir Starmer is confronting a perfect storm of difficulties. His decision to appoint Peter Mandelson as ambassador to Washington, despite Mandelson’s known links to the convicted sex offender Jeffrey Epstein, has drawn fierce criticism. Additionally, Starmer’s government has executed more than a dozen damaging U‑turns on policies ranging from tax reforms to public‑service investments, undermining confidence in its competence to deliver on the cost‑of‑living promises that helped Labour win in 2024. Political commentator Ben Ansell of the University of Oxford remarked that Starmer is “playing existential problems buckaroo at the moment, as he stacks them on the back of his electoral donkey.”
Amid these tribulations, rumours swirl about potential internal challengers readying themselves for a leadership contest. Names frequently mentioned include Health Secretary Wes Streeting, former Deputy Prime Minister Angela Rayner, and Greater Manchester Mayor Andy Burnham. Ansell suggested that if Starmer manages to survive until the next general election—no later than May 2029—it would surprise most political analysts and likely many Labour MPs as well. The prospect of a leadership battle adds another layer of instability to an already tumultuous political landscape.
Conclusion
The May 2025 local elections have underscored a profound transformation in British voter behaviour. While the Conservatives continue to lose ground to Reform UK, Labour’s historic strongholds in Wales have crumbled, the SNP retains its grip on Scotland, and the Greens have secured a symbolic mayoral victory. Collectively, these results point to the effective demise of the traditional two‑party duopoly, opening space for a more fragmented, multi‑party politics. Yet the staying power of the insurgent movements remains untested, and the Labour leadership faces serious internal and external challenges that could shape the party’s trajectory toward the next general election. How Britain navigates this period of realignment will determine whether the emerging pluralism stabilises into a new governing consensus or gives way to further volatility.