By Daniela Hathorn, senior market analyst at Capital.com
UK inflation accelerated more than expected in September, adding to concerns that price pressures are becoming harder to contain. Headline CPI rose to 3.5% year-on-year, exceeding the 3.4% forecast and August’s 3.1% reading, while monthly inflation stood at 0.4%. Core inflation met expectations at 2.8%, but its rise from 2.6% points to persistent underlying pressures. With inflation still well above the Bank of England’s 2% target, the figures are likely to reinforce policymakers’ caution. The sharper rise in producer prices adds to the challenge, signalling mounting cost pressures further up the supply chain. Input prices increased 8.3% annually, up from 6.7%, while output inflation accelerated to 4.6%. Businesses may face renewed pressure to pass higher costs on to consumers, especially if energy prices remain elevated. The extent of that pass-through, however, will depend on demand and companies’ capacity to absorb the increases through narrower margins.
The data strengthen the case for a Bank of England rate hike in November, with markets already anticipating a 25-basis-point increase to 4%. The rise in services inflation is especially significant, suggesting that price pressures extend beyond energy. Yet the Bank faces a difficult balancing act: tighter policy could help anchor inflation expectations, but risks weakening household spending and investment just as higher energy costs are squeezing disposable incomes.
For sterling, the implications are mixed. The inflation surprise could offer near-term support by reinforcing expectations of higher UK interest rates, particularly against currencies whose central banks face less pressure to tighten. But higher inflation is no clear positive for the pound if it weakens growth prospects or erodes confidence in the UK’s fiscal position. Public borrowing of £24.5 billion in September, above expectations, adds to the uncertainty ahead of next week’s Budget. Ultimately, sterling’s direction may hinge less on the inflation overshoot itself than on investors’ confidence that the Bank can restore price stability without triggering a sharper economic slowdown.
