British Pound Faces Fresh Pressure as Global Rate Hikes Shift Currency Outlook

The British pound, one of the strongest-performing G10 currencies this year, is facing a new test as expectations for interest-rate increases elsewhere begin to put pressure on sterling.

The pound has gained against several major currencies in 2026, rising around 1.6% against the euro, 2.8% against the Swiss franc, 4.9% against the Swedish krona and 1% against the Canadian dollar. Sterling has remained broadly flat against the U.S. dollar while falling about 1.3% against the Japanese yen.

The currency’s earlier strength was supported by unexpectedly resilient economic growth in the United Kingdom. The economy expanded 0.6% in the first quarter and a further 0.4% in the second quarter, giving Britain one of the stronger growth performances among advanced economies.

However, the outlook has become more complicated. Rising oil and gas prices linked to the Iran conflict have pushed inflation higher, with headline inflation approaching 3%. Markets had previously expected the Bank of England to respond to the inflationary shock with tighter monetary policy.

Instead, the Bank of England has kept its key interest rate at 3.75% throughout the year, while expectations for rate increases from other major central banks have strengthened. The European Central Bank is increasingly expected to raise rates, while markets are also pricing in a growing possibility of a Federal Reserve hike later this month.

Higher interest rates can support a country’s currency by making its assets more attractive to international investors. As a result, a more cautious Bank of England could leave sterling vulnerable if other central banks move more aggressively.

The pound also faces another important challenge in October, when the government is expected to present its first annual budget under Prime Minister Andy Burnham’s administration. Investors will closely examine proposed tax and spending measures, as well as their potential impact on government borrowing, debt and economic growth.

Analysts warn that measures involving higher taxes or increased borrowing could unsettle financial markets if investors believe they could weaken growth while increasing the UK’s debt burden.

After outperforming many of its G10 peers, sterling may therefore be entering a more difficult period, with monetary policy, inflation and the government’s fiscal decisions likely to determine whether the pound can maintain its gains or begins to lose ground.