Labour PartyLeadership CrisisJun 21, 2026, 2:59 PM· 3 min read· #9 of 9 in news politics

UK Prime Minister Keir Starmer Expected to Resign Amid Labour Revolt

British Prime Minister Keir Starmer is reportedly preparing to step down or announce a departure timetable following a decisive by-election victory by rival Andy Burnham.

By Factlen Editorial Team

Burnham's Allies 45%International Observers 30%Starmer Loyalists 25%
Burnham's Allies
Argue that Starmer is fatally wounded and Labour needs a fresh, popular leader to prevent electoral collapse.
International Observers
Express frustration and concern over the UK's chronic inability to maintain stable, long-term leadership.
Starmer Loyalists
Believe the prime minister earned a mandate in 2024 and that ousting him plunges the country into unnecessary chaos.

What's not represented

  • · Conservative / Reform UK Opposition
  • · Financial Markets

Why this matters

If Keir Starmer resigns, the United Kingdom will see its seventh prime minister in a decade, injecting fresh political instability into a G7 nation just two years after Labour's landslide victory. A change in leadership could trigger significant shifts in British economic policy, foreign relations, and the government's approach to immigration.

Key points

  • Prime Minister Keir Starmer is expected to announce his resignation or a departure timetable on Monday.
  • The crisis follows Andy Burnham's sweeping victory in the Makerfield by-election, allowing him to return to Parliament.
  • Cabinet ministers, including Yvette Cooper and Ed Miliband, have reportedly urged Starmer to step down.
  • A formal leadership challenge requires the backing of 81 Labour MPs, a threshold Burnham's allies claim to have easily surpassed.
  • Starmer's popularity has collapsed following policy U-turns and the scandal surrounding Peter Mandelson's appointment as US ambassador.
  • If Starmer resigns, the UK will see its seventh prime minister in a decade.
7
UK Prime Ministers in the last decade if Starmer resigns
54.8%
Andy Burnham's vote share in the Makerfield by-election
81
Labour MPs needed to trigger a formal leadership contest
174
Labour's parliamentary majority won in 2024

British Prime Minister Keir Starmer is expected to announce his resignation or set a firm timetable for his departure as early as Monday, following a weekend of intense pressure from his own cabinet and a mounting rebellion within the Labour Party.[1][2]

The immediate catalyst for the crisis was Friday's Makerfield by-election, where Greater Manchester Mayor Andy Burnham secured a sweeping victory with nearly 55 percent of the vote. The win returns Burnham to Parliament, officially clearing the procedural path for him to launch a formal leadership challenge against Starmer.[3][6]

Starmer spent the weekend at Chequers, the prime minister's country retreat, consulting with close advisers and his family. While he had previously vowed to fight any attempt to oust him, Business Secretary Peter Kyle acknowledged on Sunday that the prime minister was taking time to reflect on the political realities facing his government.[1][2]

Under Labour rules, 81 MPs must back a challenger to trigger a formal leadership contest.
Under Labour rules, 81 MPs must back a challenger to trigger a formal leadership contest.

Behind closed doors, support for Starmer has evaporated. Senior cabinet ministers, reportedly including Foreign Secretary Yvette Cooper, Energy Secretary Ed Miliband, and Home Secretary Shabana Mahmood, have privately urged him to step down to avoid a protracted and damaging civil war.[2][7]

Burnham, often dubbed the "King of the North," used his victory speech to call for a new path for Britain, signaling his intent to lead. Allies of Burnham are reportedly pushing for a coronation that would install him in 10 Downing Street without a drawn-out leadership contest, though former health minister Wes Streeting has also indicated he might run.[3][4]

Andy Burnham's victory in the Makerfield by-election has cleared his path to challenge for the premiership.
Andy Burnham's victory in the Makerfield by-election has cleared his path to challenge for the premiership.
Burnham, often dubbed the "King of the North," used his victory speech to call for a new path for Britain, signaling his intent to lead.

The revolt marks a stunning collapse for Starmer, who led the center-left Labour Party to a historic 174-seat majority just two years ago in July 2024. Since then, his approval ratings have plummeted amid a series of controversies, including cuts to winter fuel payments for older citizens and disastrous local election results in May 2026.[1][3]

Starmer's political judgment suffered its most severe blow earlier this year over the appointment of Peter Mandelson as the UK ambassador to the United States. Mandelson was fired in September 2025 over his ties to disgraced financier Jeffrey Epstein, and Starmer was forced to apologize to Parliament in February 2026 after admitting Mandelson had lied during the vetting process.[1][2]

Under Labour Party rules, a formal leadership challenge requires the backing of 20 percent of the parliamentary party, or 81 MPs. With more than 100 Labour lawmakers already publicly demanding Starmer's exit, the threshold for a contest has effectively been met, leaving the prime minister with few procedural lifelines.[1][6]

If Starmer resigns, the UK will see its seventh prime minister in ten years.
If Starmer resigns, the UK will see its seventh prime minister in ten years.

The prospect of yet another leadership change in London has drawn weary reactions from international allies. Australian Prime Minister Anthony Albanese noted over the weekend that he has already dealt with four British prime ministers during his tenure, warning that the history of just changing leaders is not a positive one.[5]

If Starmer steps aside, the United Kingdom will inaugurate its seventh prime minister in a decade—the highest turnover rate in nearly two centuries. Labour officials are now bracing for Monday, hoping an orderly transition plan will prevent the party from tearing itself apart in the public eye.[1][2]

How we got here

  1. July 2024

    Keir Starmer leads the Labour Party to a landslide general election victory, securing a 174-seat majority.

  2. September 2025

    Starmer fires Peter Mandelson as US Ambassador over undisclosed ties to Jeffrey Epstein, severely damaging the prime minister's political standing.

  3. May 2026

    Labour suffers heavy losses in local elections, prompting dozens of MPs to call for Starmer's resignation.

  4. June 19, 2026

    Andy Burnham wins the Makerfield by-election with 55 percent of the vote, returning to Parliament and clearing the way for a leadership challenge.

  5. June 21, 2026

    Cabinet ministers reportedly urge Starmer to resign during weekend talks at Chequers.

Viewpoints in depth

Burnham's Allies

Labour MPs pushing for a swift transition of power to Andy Burnham.

Supporters of the Greater Manchester Mayor argue that Starmer's premiership is fatally wounded and that a protracted leadership contest will only damage Labour's standing with the public. They view Burnham's decisive victory in Makerfield as a clear mandate for change, pointing to his popularity in the North of England as the antidote to the party's recent electoral struggles. This camp is pushing for an uncontested 'coronation' to seamlessly install Burnham in 10 Downing Street.

Starmer Loyalists

A shrinking circle of defenders arguing against a mid-term change in leadership.

Those still backing the prime minister emphasize that he secured a massive 174-seat parliamentary majority just two years ago and deserves the opportunity to govern. They warn that ousting a sitting prime minister so soon after a historic election victory will make Labour look as chaotic and unstable as the previous Conservative governments. Some loyalists also fear that Burnham's 'soft left' politics could alienate the centrist voters who delivered Labour's 2024 landslide.

International Observers

Allies and trading partners concerned by chronic British political instability.

Foreign leaders and diplomatic observers view the potential leadership change with a mix of fatigue and concern. With the UK facing its seventh prime minister in ten years, allies worry that London is becoming an unreliable partner on the global stage. Leaders like Australia's Anthony Albanese have publicly cautioned against the constant churn, noting that continuous domestic political drama distracts the UK from long-term international commitments and economic partnerships.

What we don't know

  • Whether Starmer will resign immediately or attempt to stay on as a caretaker prime minister until the autumn.
  • If Andy Burnham will face a formal leadership contest from figures like Wes Streeting, or if the party will agree to an uncontested coronation.
  • How financial markets will react to the sudden prospect of a new prime minister and potential shifts in fiscal policy.

Key terms

By-election
An election held to fill a political office that has become vacant between general elections.
Leadership Challenge Threshold
Unlike the Conservative Party, Labour rules require a challenger to secure the public backing of 20 percent of the parliamentary party (81 MPs) to trigger a leadership contest.
Chequers
The official country residence of the Prime Minister of the United Kingdom, often used for high-level political strategy meetings.
Coronation
In British politics, a scenario where a party leader is installed without a formal contest because all other viable challengers step aside.

Frequently asked

Why is Keir Starmer facing pressure to resign?

Starmer's popularity has plummeted due to a series of policy U-turns, controversial cuts to winter fuel payments, and the scandal surrounding his appointment of Peter Mandelson as US Ambassador. Poor local election results in May further eroded his party's confidence.

Who is Andy Burnham?

Andy Burnham is the Mayor of Greater Manchester and a former Labour cabinet minister. He recently won a parliamentary seat in the Makerfield by-election, making him eligible to run for prime minister.

How many prime ministers has the UK had recently?

If Starmer resigns, the UK will inaugurate its seventh prime minister in a decade, following David Cameron, Theresa May, Boris Johnson, Liz Truss, Rishi Sunak, and Starmer himself.

Can Starmer be forced out?

Yes. Under Labour Party rules, if 20 percent of Labour MPs (81 lawmakers) back a challenger, a formal leadership contest is triggered. Reports indicate more than 100 MPs already want him to step down.

Sources

Source coverage

7 outlets

3 viewpoints surfaced

Burnham's Allies 45%International Observers 30%Starmer Loyalists 25%
  1. [1]The GuardianStarmer Loyalists

    Starmer reportedly expected to resign on Monday as growing numbers of MPs back Andy Burnham for PM

    Read on The Guardian
  2. [2]Financial TimesStarmer Loyalists

    Keir Starmer on brink of resigning as UK prime minister

    Read on Financial Times
  3. [3]PBSBurnham's Allies

    Labour's Andy Burnham wins Makerfield by-election, clearing path to challenge Starmer

    Read on PBS
  4. [4]The IndependentBurnham's Allies

    Labour MPs demand Burnham 'coronation' as PM with ministers set to urge Starmer to quit

    Read on The Independent
  5. [5]SBS NewsInternational Observers

    Albanese says he will deal with whoever is in power as pressure mounts on Keir Starmer's leadership

    Read on SBS News
  6. [6]CBC NewsBurnham's Allies

    Andy Burnham wins special election, putting him in position to challenge UK PM Keir Starmer

    Read on CBC News
  7. [7]BBC NewsInternational Observers

    Foreign Secretary Yvette Cooper joins calls for Starmer to set departure timetable

    Read on BBC News
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