Starmer's Exit Impacts Markets
Prime Minister Keir Starmer Announces Resignation, London's FTSE Index Falls to One-Week Low
Prime Minister Keir Starmer resigned on Monday, June 22, delivering an emotional speech outside 10 Downing Street at 9:30 AM GMT. He said, "The question my party is asking now is whether I am best placed to lead us into the next general election... I have heard the answer... and I accept that answer with good grace," according to MarketScreener.
Markets moved quickly. London's domestically focused FTSE 250 dropped 0.7%, while the pound slipped to $1.319 — a near three-month low. Starmer will stay in office until Labour picks a new leader, expected by September 2026, DevDiscourse reported.
A Two-Year Tenure That Unraveled Fast
Starmer won a landslide election victory in 2024. But his government fell apart in just two years. Labour lost roughly 1,500 council seats in May 2026 local elections, slumping to third place in Wales. Over 95 Labour MPs had called for his exit by mid-May, SAN reported.
Health Secretary Wes Streeting resigned on May 14, citing a "vacuum of vision" at the heart of government. The appointment of Peter Mandelson — who had ties to Jeffrey Epstein — as UK Ambassador to the US also fueled fury inside and outside the party. Critics called it "the biggest political scandal in 100 years."
Andy Burnham's By-Election Win Triggered the Final Break
The final blow came on June 18. Greater Manchester Mayor Andy Burnham won the Makerfield by-election with 54.8% of the vote and a majority of 9,200. He entered Parliament specifically to challenge Starmer's leadership, according to MarketScreener.
By Sunday evening, even Business Secretary Peter Kyle told the BBC that Starmer was reflecting on "political realities." U.S. President Donald Trump then posted on Truth Social that Starmer would resign — before any official announcement was made. Trump later said, "He failed badly on two very important subjects... I wish him well!"
Pound and Gilts Signal Investor Unease
The FTSE 100 fell 0.1% to 10,363.47. The FTSE 250 dropped 0.2% to 23,161.94. Sterling fell 0.1% against the euro to €1.152. The 10-year gilt yield — the cost of UK government borrowing — rose to 4.86%, while the 30-year yield climbed to 5.55%, DevDiscourse reported.
Analysts warned that UK assets now carry a "political instability risk premium" that has lingered since Brexit. Susannah Streeter of Wealth Club said "political churn" is making investors nervous, noting Britain may soon have its seventh Prime Minister in a decade.
Labour Now Faces a Crowded Leadership Race
Labour leadership nominations are set to open on July 9. Any candidate needs 81 nominations — 20% of Labour MPs — to stand. Burnham is the early frontrunner, but Wes Streeting and Angela Rayner could force a full ballot, according to SAN.
A Burnham government is expected to shift focus toward England's North and Midlands. Reform UK leader Nigel Farage demanded an immediate general election, saying the government had lost "credibility, control and respect." A new Prime Minister is expected before Parliament returns from summer recess in September 2026.
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