Keir Starmer Steps Down as MP After 11 Years
The former British prime minister announced he is also giving up his seat in Parliament after 11 years, triggering a by-election in his north London constituency.
Former British prime minister Keir Starmer announced on Tuesday, September 1, that he is also giving up his seat in the House of Commons, a little more than two months after he stepped down as head of government. The decision is not purely a matter of British domestic politics: on the same day, Starmer said that outside Parliament he would focus on international affairs, defense, security, trade and technology, areas where Britain still shapes the European security architecture that includes the Western Balkans, which is why the change at the top of one of the UK’s two largest parties is being watched beyond London as well.
The news was first reported by the Camden New Journal, a local paper covering his Holborn and St Pancras constituency in north London. Starmer had represented that constituency since 2015, a full 11 years, after succeeding longtime MP Frank Dobson.
Why He’s Leaving Parliament, Not Just Downing Street
Starmer resigned as prime minister in June 2026 after losing the support of his own Labour Party. The pressure had been building for months, ever since it emerged in April that Peter Mandelson, then Britain’s ambassador in Washington, had failed a security vetting as far back as January 2025, yet his appointment was confirmed a month later after the Foreign Office overturned that finding. In Parliament, Starmer maintained he had not been informed of the failed vetting in advance, saying a “deliberate decision was taken to withhold that information” from him. He weathered that crisis, but calls for his resignation resurfaced in May after Labour’s poor showing in local elections. When Andy Burnham, who had openly signaled he wanted to challenge Starmer for the party leadership, won his way back into Westminster with a by-election victory in Makerfield, Starmer announced he was stepping down as head of government. Burnham succeeded him in July, taking over both as prime minister and as Labour leader.
Now, three months later, Starmer is giving up his parliamentary seat as well. “It has been an enormous honor and privilege to represent the best constituency in the country,” he told the Camden New Journal.
What Starmer Says, What Burnham Says
In a fuller statement on his departure, Starmer said he had used the summer to think about his future and had concluded that “now is the right time” to hand the seat to a successor in Holborn and St Pancras. Listing what he had achieved in the constituency since 2015, he pointed to affordable housing projects, improvements in education, and youth violence reduction efforts through Camden’s local youth safety taskforce. In the same statement, he also summed up his two years as prime minister, saying his government had “stabilized the economy, rebuilt public services, invested record amounts in defense and security,” and begun lifting hundreds of thousands of children out of poverty.
That distinction is worth spelling out, since the two are easy to conflate. Prime Minister Andy Burnham, in his first address to Parliament since taking over the leadership, credited Starmer only with the 2024 election win, which he called “one of the best” victories in Labour’s history, and with building “a platform to change the country for the better.” Burnham made no mention of the economy; the claim that the economy had been stabilized came from Starmer alone, describing his own record.
That 2024 victory, for what it’s worth, gave Labour a commanding majority in the House of Commons even though the party won only about a third of the popular vote, a result of Britain’s first-past-the-post electoral system in single-member constituencies.
What Comes Next for His Constituency
Starmer’s departure from Parliament triggers a by-election in Holborn and St Pancras, a constituency that has traditionally voted Labour. Neither the date of the vote nor the candidates have been set; the party still has to run its selection process for a successor. Starmer said he would give his full backing to Labour’s new candidate, as well as to Andy Burnham’s government.
“I will dedicate myself to defense, security, trade and technology in a fast-changing world,” he said in his statement on leaving Parliament, adding that he was reversing an earlier decision and would keep working on tackling violence against women and girls, a cause he has championed for decades. Who will next hold the seat for Holborn and St Pancras, and defend what he himself called “the best constituency in the country,” will not be known until Labour sets a date for the by-election.
