Sir Keir Starmer is currently facing a significant challenge to his leadership as Prime Minister of the United Kingdom, following a series of cabinet resignations and mounting pressure from within the Labour Party. As of May 2026, Starmer has vowed to remain in office, though he contends with calls for his departure from numerous Labour MPs following recent election results.
The Current State of the Labour Leadership
The pressure on Sir Keir Starmer intensified in mid-May 2026 after a series of resignations from his government. According to the BBC, Health Secretary Wes Streeting resigned from the cabinet on May 14, 2026, stating that he had “lost confidence” in Starmer’s leadership. Streeting’s resignation followed the departure of four other government members earlier that week, including health minister Zubir Ahmed.
Despite these exits, other senior figures have signaled their support for the Prime Minister. Education Secretary Bridget Phillipson stated that Starmer still has “cabinet behind him,” and she urged party colleagues to “pause, take a breath” rather than continue the current period of internal instability. Chancellor Rachel Reeves has also publicly warned that a leadership contest would “plunge the country into chaos.”
How a Leadership Contest Could Be Triggered
For a formal challenge to proceed, the party’s internal rules require the backing of 20% of Labour MPs. According to the BBC, this threshold is currently 81 members of Parliament. While Wes Streeting’s camp has suggested they possess the necessary support to initiate a contest, no formal bid has been launched by the former health secretary himself.
Earlier in May 2026, Labour backbencher Catherine West announced she was prepared to challenge Starmer for the leadership. West, who previously served as a junior minister in the Foreign Office before being reshuffled out of her position last year, stated she was frustrated by the reluctance of senior cabinet members to openly address the party’s future. However, she noted that she did not personally aspire to the top job.
The Potential Return of Andy Burnham
The political landscape is further complicated by moves involving Greater Manchester Mayor Andy Burnham. Labour MP Josh Simons has announced he is standing down, which triggers a by-election in the constituency of Makerfield. This move is intended to create a path for Burnham to return to the House of Commons.
According to the BBC, Burnham has requested permission from the National Executive Committee (NEC)—the party’s ruling body—to stand as the Labour candidate in the upcoming by-election. Downing Street has indicated it will not block this candidacy. While Burnham has not formally launched a leadership bid, his potential return to Parliament is widely viewed by political observers as a maneuver to position him as a successor should Starmer be forced out.
Key Takeaways
* Leadership Status: Sir Keir Starmer remains Prime Minister but faces open calls to resign from multiple Labour MPs.
* Cabinet Resignations: Wes Streeting resigned as Health Secretary on May 14, 2026, citing a loss of confidence in the Prime Minister.
* Threshold for Challenge: A leadership contest requires the support of 81 Labour MPs.
* By-election Developments: Andy Burnham is seeking to return to Parliament via the Makerfield by-election, a move that would provide him with a platform for a potential leadership run.
As the situation remains volatile, the party’s focus is split between addressing the “big challenges” facing the country—which Starmer acknowledged in a speech on May 11, 2026—and the internal debate regarding the future of his premiership.