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Sterling drops as markets watch UK politics, PM Starmer's future

Published by Global Banking & Finance Review

Posted on May 12, 2026

2 min read

· Last updated: May 12, 2026

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Sterling Slips as Political Turmoil Puts Keir Starmer's Future in Spotlight

Market Reactions to UK Political Uncertainty

By Stefano Rebaudo

Sterling's Performance Amid Political Tensions

May 12 (Reuters) - Sterling slid against the dollar and the euro on Tuesday as markets kept a close watch on political developments, amid growing concern that British Prime Minister Keir Starmer could step down.

Leadership Crisis and Cabinet Unrest

Starmer was consulting colleagues about whether he can stay on as prime minister on Tuesday ahead of a crunch cabinet meeting that comes after ministerial aides quit and almost 80 lawmakers publicly called for him to go. 

Currency Movements and Recent Highs

Sterling was down 0.45% at $1.3550, after rising over 0.5% on Friday last week when Starmer vowed to stay in office after his ruling Labour Party suffered heavy losses in local elections. It hit $1.3658 last week, its highest level since February 16.

The pound was down 0.17% at 86.72 pence versus the euro, its lowest since April 28.

Investor Concerns and Economic Implications

Potential Leadership Change

Impact on Fiscal Policy and Markets

Investors have been concerned that if Starmer is forced out, he would be replaced by a more left-leaning Labour leader, who might increase public borrowing, which would put even more pressure on Britain's already fragile finances and hit bond and currency markets.

(Reporting by Stefano Rebaudo; Editing by Amanda Cooper)

Key Takeaways

  • Sterling fell ~0.45% to $1.3550 and ~0.17% to €0.8672 as markets responded to uncertainty over Starmer’s future and UK politics
  • Investors fear a left‑leaning replacement might raise public borrowing, worsening debt costs and weakening British bonds and currency
  • Recent local election losses for Labour amplified pressure on Starmer, with growing numbers of MPs publicly calling for his resignation

Frequently Asked Questions

Why did sterling drop against the dollar and euro?
Sterling fell due to market concerns over potential leadership changes in the UK, with uncertainty surrounding Prime Minister Keir Starmer's future.
How much did sterling fall against the dollar and euro?
Sterling fell 0.45% against the dollar to $1.3550 and 0.17% against the euro to 86.72 pence.
Why are investors concerned about a new Labour leader?
Investors fear a more left-leaning Labour leader could increase public borrowing, pressuring Britain's finances and impacting currency and bond markets.
What past events influenced sterling's recent performance?
Sterling had previously risen after Starmer vowed to stay despite Labour's local election losses, reaching its highest since February 16.

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