UK Inflation Surge and Borrowing Spike Threaten Chancellor John Healey’s First Budget

The Office for National Statistics reported that consumer-price inflation rose to 3.5 % in September 2026, up from 3.1 % in August. The sharpest contribution came from transport fuels. Average petrol prices increased by 8.2 p per litre to 169.5 p, while diesel rose by 10.7 p per litre to 192.5 p, both record levels for the month.

The Guardian

The jump is linked to the Iran-Israel-U.S. conflict that began in February 2026, which has effectively closed the Strait of Hormuz. Brent crude has hovered around $110 per barrel, well above the $100 threshold that triggered the earlier price climb. Higher oil costs have also lifted air-fare prices and, to a lesser extent, prices for computer games and live events.

The Guardian

Government borrowing surged to £24.5 billion in September 2026, widening the April-September deficit to £97.8 billion. The cumulative public-sector net borrowing for the fiscal year now exceeds £3 trillion for the first time since the 1960s. Debt-service costs rose sharply, with £10.9 billion paid in interest in September—the highest monthly figure on record.

Bloomberg

• The International Monetary Fund praised the United Kingdom as the G7 nation most successful at containing borrowing, projecting the budget deficit to fall from 3.8 % of GDP this year to 1.4 % in 2031.

Bloomberg

• Andrew Griffith, Conservative shadow chancellor, said the figures show Labour has “lost control of the economy” and called for stronger deficit-reduction measures.

The Guardian

The inflation surge threatens household budgets through higher fuel and transport costs, which could feed into food-price growth and affect the state-pension triple-lock, likely raising pensions by 3.9 % next April. Elevated inflation also tightens the Bank of England’s policy space, increasing the probability of a rate hike that would raise borrowing costs for mortgages and businesses.

The Independent

• CPI inflation (Sept 2026): 3.5 %

The Independent

• Petrol price increase (Aug-Sept): +8.2 p / litre to 169.5 p

The Guardian

• Diesel price increase (Aug-Sept): +10.7 p / litre to 192.5 p

The Guardian

• September borrowing: £24.5 billion (monthly deficit)

Bloomberg

• YTD public-sector net borrowing: £97.8 billion

Bloomberg

• National debt: >£3 trillion (?94 % of GDP)

Bloomberg

• Debt-interest paid in September: £10.9 billion

The Guardian

• “Rising inflation and record levels of debt illustrate the double dilemma facing the chancellor – how to ease cost of living pressures for families while keeping a lid on government borrowing,” — Greg Thwaites, interim chief economist at the Resolution Foundation

Bloomberg

• 28 October: Healey will deliver the Budget, expected to include a new levy on banks’ profits but no increase to capital-gains tax.

The Guardian

• 5 November: The Bank of England is set to meet and is widely expected to raise interest rates in response to the inflation data.

The Independent