British Pound Falls to One-Month Low Amid Reports of Attempt to Oust UK PM Starmer
Despite strong UK GDP data for the first quarter, the GBP/USD exchange rate fell sharply as markets worry about political instability and a potential challenge to Keir Starmer's leadership from Health Secretary Wes Streeting.
The sterling market now resembles the cardiogram of a patient who has just received an unexpected diagnosis. On the surface, GDP grew by 0.6% in the first quarter — data that in normal times would have sent the pound into a sustained rally. Instead, GBP/USD fell to a one-month low around 1.35. The diagnosis markets are making is simple: political risk is terminal, and no macroeconomic stability can compensate for it.
The Core: What Is Really Happening
The pound's fall despite strong GDP data is a classic signal that the currency market is pricing not so much past economic achievements as the likelihood of a radical shift in fiscal policy in the coming weeks. The UK economy grew by 0.6% in the first quarter of 2026 — the strongest performance in recent periods — but it was completely ignored by traders.
In reality, the market is not trading Starmer or Streeting. It is trading the probability that the next election for prime minister or Labour leader will bring to power a politician willing to abandon current fiscal rules. When Greater Manchester Mayor Andy Burnham, mentioned as a potential successor, calls for a review of budget constraints, the market hears not a campaign promise but a direct threat to its holdings in British debt.
Timeline and Context
The chain of events leading to the current crisis unfolded rapidly. May 7, 2026 — local elections result in a historic defeat for Labour. May 8-10 — a wave of calls for Starmer's resignation, with over 80 Labour MPs publicly demanding his departure. May 11 — Health Secretary Wes Streeting resigns, citing a "loss of confidence" in the prime minister's leadership. May 12 — the yield on 30-year UK government bonds surges to 5.80%, the highest since 1998. May 13 — GDP data is published, showing 0.6% growth in the first quarter. May 14-15 — the pound falls to a one-month low despite the positive statistics.
Behind these dates lies a simple but sobering calculation: the market is pricing in not just a change of prime minister but three additional rate hikes by the Bank of England by the end of 2026.
Who Wins and Who Loses
The biggest loser is obvious — holders of British assets. The FTSE 250, an index of domestically focused companies, has already fallen 1.5%. Foreign investors, who hold about 35% of UK government debt, have begun reducing positions amid political instability. The spread between 30-year UK and US bonds has widened from 60 to 78 basis points in just two trading sessions.
The dollar wins — not because the US economy is in good shape, but because it looks like a safe haven amid the British political storm. Paradoxically, 10-year Treasury yields are also rising, but the market sees this as a sign of strength, not weakness.
The UK export sector wins — a falling pound makes British goods cheaper abroad. But this effect will be short-lived if the political crisis drags on and leads to a more fundamental revaluation of British assets.
UK consumers lose — a weak pound means more expensive imports, which translates into inflation. Given that Britain remains a net importer of energy, rising Brent crude prices above $107 per barrel create a double blow to household purchasing power.
What the Media Isn't Saying
The first non-obvious insight is that the market is not actually afraid of Streeting. ING estimates the probability of a sharp rise in the fiscal risk premium under his victory as low precisely because he represents the centrist wing of the party. The market fears not Streeting but Burnham. If the Manchester mayor actually finds a way to enter Parliament and wins the leadership election, his rhetoric about expanding budget spending could trigger a repeat of the mini-budget crisis in the style of Truss in 2022.
The second point is the link to the global energy crisis. UK government bond yields were rising even before the political crisis began, fueled by the inflationary consequences of the conflict in the Persian Gulf. The political crisis merely accelerated and exacerbated this trend.
The third and deepest insight: the current situation is fundamentally different from the Liz Truss crisis. Back then, panic was acute, requiring emergency intervention by the Bank of England, and the crisis resolved within 49 days. Now the market is reacting more "orderly" — without emergency interventions, without a collapse of LDI funds, but with a steady and relentless rise in yields. This is not panic but a structural reassessment of risk, and it could stretch over months.
Forecast: Next 30 and 90 Days
Next 30 days (by June 16). Base case: Starmer resigns, a Labour leadership election is called. If the main candidates are Streeting and Rayner, the market will take it relatively calmly — GBP/USD stabilizes in the 1.33-1.36 range. If Burnham enters the race and starts leading in polls, expect a test of 1.30. The 10-year government bond yield, which has broken 5.1%, could reach 5.3-5.5%.
Next 90 days (by August 16). Key fork. Base case (55% probability): Streeting wins the leadership election, reaffirms commitment to fiscal discipline, markets breathe a sigh of relief. GBP/USD rebounds to 1.38-1.40. Government bond yields fall back below 5%.
Negative scenario (30%): Burnham wins, announces a review of fiscal rules. Markets react sharply negatively. GBP/USD falls to 1.25. The 10-year government bond yield surges to 5.75-6.00% — levels not seen in decades.
Catastrophic scenario (15%): the political crisis drags on, Starmer refuses to step down, the party splits. In this case, the pound could test 1.20, and British assets enter a full-blown bear market.
The truth no one wants to utter aloud in Westminster is that the British economy has become hostage to three interrelated crises: the global energy shock from the conflict in the Persian Gulf, the political vacuum in the Labour Party, and structural vulnerability to inflation. Government bond yields at levels exceeding the Truss crisis are not a technical correction but a fundamental market verdict on the state of the British economy and its governance. Whoever becomes the next prime minister will have to deal with a debt market that no longer believes in British fiscal exceptionalism.
— Editorial Team
