Introduction: UK borrowing jumps to £18.3bn in August

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Britain’s national debt is rising faster than expected after the government borrowed more than expected, again, to balance the books.

The latest public finances data, just released, shows that the UK borrowed £18.3bn in August, which is £2.9bn more than in August 2025, as spending rose faster than government income.

This is higher than the £15.6bn forecast by the City. But more importantly, it’s £3.5bn above the Office for Budget Responsibility (OBR)‘s forecast for August.

The UK borrowed £18.3 billion in August 2026, up £2.9 billion on the same month last year
Photograph: Office for National Statistics

And it means that so far this financial year, the UK has borrowed £8.1bn more than the OBR’s forecast.

This all adds up to a headache for chancellor John Healey as he works on next month’s budget, as the recent bond market turmoil has eaten into his ‘headroom’ to keep within the fiscal rules.

Emeritus professor Joe Nellis, head of economic research at accountancy and advisory firm MHA, says this morning’s data is “another reminder of the fiscal straightjacket facing the Government” ahead of the budget.

Nellis adds:

double quotation markBut why is the deficit proving so hard to reduce? The weakness lies mainly on the expenditure side. Higher inflation is impacting spending on public-sector pay, state benefits and pensions. And last week’s announcement that inflation has hit 3.1% will not have helped.

On top of this, the cost of servicing the national debt remains exceptionally high. Public sector net debt is just below £3 trillion, representing around 94% of GDP, the highest since the early 1960s.

The agenda

  • 7am BST: UK public finances for August

  • 10am: UK Treasury Gilt 2032 Auction

  • 11am BST: CBI industrial trends report

  • 3pm BST: Eurozone consumer confidence report

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Key events

The oil price has shrugged off a brief dip below the $100 a barrel mark yesterday.

This morning, Brent crude is up 1.1% at $101.50/barrel, as traders continue to assess the hopes of a diplomatic breakthrough in the Middle East.

Yesterday afternoon, Brent fell below $100 a barrel for the first time in a fortnight. That appeared to be due to relief that the US had not renewed its bombing campaign against Iran, as Tehran had warned on Sunday.

Hopes that US president Donald Trump could meet Iranian president Masoud Pezeshkian during the United Nations General Assembly in New York later this week also pushed oil lower.

But concerns over an escalation in the region remain. Earlier this morning, Saudi Arabia’s civil defence body issued an alert in its Najran region, amid ongoing hostilities between the kingdom and Yemen’s Iran-backed Houthis. That alert has now been lifted.

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