The UK’s most widely quoted measure of public debt is now just under £3 trillion. The Office for National Statistics estimated public sector net debt excluding public sector banks at £2,984.9 billion at the end of July 2026, equivalent to 94.1% of GDP. The cash figure was £95.9 billion higher than a year earlier, while the debt-to-GDP ratio was 0.8 percentage points lower.
Those two facts can both be true. Debt is a cash stock; debt-to-GDP compares that stock with the size of the economy. Nominal GDP can grow quickly enough for the ratio to fall even while the government owes more pounds. That is why a serious reading of UK debt needs both numbers, not a headline about one in isolation.
What “UK national debt” actually means
There is no single debt number that answers every fiscal question. The measure most often quoted in UK political and financial discussion is public sector net debt excluding public sector banks, or PSND ex. It takes the public sector’s debt liabilities and subtracts a defined set of liquid financial assets. It is a net measure, not simply the face value of every government bond in circulation.
At the end of July 2026, the ONS also recorded £2.721 trillion of central government gilts, general government gross debt of £3.175 trillion, and public sector net financial liabilities of £2.658 trillion. These measures differ because they draw different boundaries around liabilities and assets. Quoting one as though it were interchangeable with another is a common source of confusion.
How the government borrows
The UK government finances the gap between receipts and spending by issuing debt, principally gilts, through the Debt Management Office. A gilt is a tradable promise by the government to make specified interest payments and repay principal according to the terms of the bond. Conventional gilts pay a fixed coupon; index-linked gilts have payments linked to inflation.
Not every pound of annual borrowing turns one-for-one into the change in headline net debt. Cash management, financial transactions, valuation effects and the treatment of public assets and Bank of England operations all matter. That is another reason to keep the concepts separate: the deficit is a flow over a period; debt is a balance-sheet stock at a point in time.
Who owns UK government debt?
Gilts are held across several broad groups: UK pension and insurance funds, banks and other financial institutions, overseas investors, households and investment funds, and the Bank of England’s Asset Purchase Facility. The mix changes over time as investors buy and sell bonds and as the Bank reduces the gilt portfolio accumulated under quantitative easing.
There is therefore no fixed answer such as “the Bank of England owns a quarter of UK debt” that remains reliable indefinitely. That kind of statement was especially easy to make during the peak of quantitative easing and especially easy to leave stale afterwards. The useful distinction is between the government’s total obligations and the distribution of gilt holdings among domestic private investors, overseas investors and the central bank. For current ownership shares, the Debt Management Office’s quarterly gilt-holdings statistics are the appropriate series rather than an old snapshot.
Is 94.1% of GDP high?
It is high by recent pre-pandemic UK standards and close to levels last seen in the early 1960s, according to the ONS. But the ratio alone does not tell you whether the debt is affordable. The maturity structure, interest rate, inflation linkage, currency denomination, investor base and growth of government revenues all affect the burden.
The most immediate constraint is debt interest. Higher gilt yields raise the cost of new borrowing and, over time, refinancing existing debt. Index-linked debt also exposes the government to inflation. A country can carry a high debt ratio for a long time if nominal growth, revenues and financing conditions cooperate; the fiscal problem becomes harder when weak growth and high interest costs arrive together.
What the OBR expects
In its March 2026 Economic and Fiscal Outlook, the Office for Budget Responsibility expected public sector net debt to remain broadly stable over its forecast horizon and settle at around 95% of GDP in the early 2030s. It also stressed the width of the uncertainty around that path, including risks from interest rates, productivity, trade policy and spending pressures.
The July outturn of 94.1% of GDP was 0.3 percentage points below the OBR’s forecast for that point, but one monthly difference does not materially change the longer-term arithmetic. The bigger questions are whether the government can narrow borrowing as planned and whether the cost of servicing the existing stock stays manageable.
Debt, gilts and UK markets
For investors, public debt is not merely a fiscal statistic. The gilt curve is the sterling economy’s core reference rate. Moves in gilt yields feed into mortgage pricing, corporate borrowing costs, pension liabilities and the relative valuation of equities. Fiscal credibility can therefore travel into the wider market even without any immediate change in tax or spending.
For the monetary side of that relationship, see the current UK interest-rate outlook. For inflation, which affects both policy rates and index-linked debt, see the UK inflation outlook.
Primary sources
- Office for National Statistics: Public sector finances, UK, July 2026.
- Office for Budget Responsibility: Economic and fiscal outlook, March 2026.
- UK Debt Management Office: gilt market data.
Checked 11 September 2026. The next ONS public-sector-finance release is scheduled for 22 September 2026.