Why Keir Starmer resigned as prime minister and what happens next

Keir Starmer has resigned as prime minister amid fallout from May local elections and internal pressure from around 100 MPs. This summary outlines the verified facts, key numbers and the immediate political developments involving Andy Burnham, Wes Streeting and senior cabinet reactions.

The political landscape shifted sharply when Keir Starmer announced he was stepping down as prime minister and leader of the Labour Party. The decision followed a string of setbacks, notably disappointing local election results in May and calls for resignation from around 100 MPs.

In a visibly emotional speech outside Downing Street on 22/06/2026 at 12:55, Starmer described becoming prime minister as the “proudest moment” of his life and said he accepted the loss of party backing with “good grace.” While he will remain in post until a successor is chosen, the immediate political consequences were rapid: Andy Burnham, fresh from a Makerfield by-election win, headed to Westminster and was on a train from Manchester Piccadilly to London to be sworn in as an MP.

Resignation context and party reaction

Labour’s poor showing in local polls in May triggered a wave of internal criticism and several cabinet resignations. Senior figures within the party publicly praised Starmer’s broader achievements even as they acknowledged the need for change.

Statements from cabinet members emphasized that Starmer had “decisively restored Britain’s credibility” and rebuilt trust after difficult years for the party, while other voices called for rapid renewal. With nominations for a new leader proposed to open on 9 July and a target to complete the process by the summer recess week of 16 July, the timeline aims to ensure a new leader before Parliament returns on 1 September. Wes Streeting publicly declared his support for Andy Burnham a move that many commentators interpreted as making Burnham the front-runner and reducing the prospect of an extended contest.

Migration and asylum: the numbers Starmer cited

In his address, Starmer referenced progress on migration and asylum arrangements. Government figures show about 10,000 small boat crossings recorded up to 20 June 2026 representing a 42% decrease compared with the equivalent period in 2026. While that decline is notable, the previous year’s figure remained the second-highest on record after a 2026 peak under the former Conservative administration. On asylum accommodation, the government has reduced the use of hotels, moving people into other sites including former military facilities. As of April there were just under 190 hotels still in use for asylum accommodation, down from a near-peak of almost 400 in 2026; an earlier figure showed the number at 213 in June 2026. Officials did not publish comparable national totals for asylum seekers in houses of multiple occupancy. These details framed Starmer’s claim that “small boat crossings [are] falling” and that “asylum hotels [are] closing,” statements that reflect progress but also underscore how totals remain historically high.

Defence spending pledge and historical context

Starmer also pointed to planned increases in defence outlays. The government proposed spending the equivalent of 2.5% of GDP in /28 with a commitment to reach 3% in the next parliament. The administration described this as the largest uplift in defence investment since the Cold War. For context, defence expenditure in the 1950s exceeded 7% of GDP; by 1989 it stood around 3.3% and in later decades it has at times dipped below 2%. The planned rise to 2.5% and beyond would therefore represent a significant increase relative to recent peacetime levels and has been highlighted as a central element of the outgoing government’s legacy.

Immediate aftermath: Burnham, markets and regional reactions

Andy Burnham’s rapid move to Westminster after winning the Makerfield by-election prompted swift political realignments. With prominent Labour figures rallying behind Burnham, many analysts suggested the leadership contest may be short-lived. Financial markets reacted modestly: the FTSE 100 rose and UK government bond yields fell slightly after an endorsement for Burnham reduced the chance of a protracted internal struggle. The response from the devolved nations varied. The Scottish National Party’s leadership framed another prime ministerial change as strengthening their case for constitutional change, while Scottish labour thanked Starmer and urged a focus on governance rather than separation. Across Northern Ireland and Wales, commentators noted differences in political priorities and praised aspects of Starmer’s record, such as avoiding renewed Stormont collapse during his tenure.

What Starmer said and what lies ahead

In his Downing Street remarks, Starmer praised his family and reflected on public service, saying he would now focus on being a husband and father. He will continue in office until Labour selects a replacement, keeping formal duties such as weekly audiences with the King during the transition. As the party prepares for nominations and a potential campaign, the politics of succession — and the policy debates on migration and defence that featured in Starmer’s closing statement — are set to dominate the coming weeks. The rapid arrival of a credible frontrunner in Andy Burnham has made a speedy leadership decision likely, even as the country absorbs the implications of Britain’s fourth prime minister in a short period for some observers in the devolved administrations.