Analysis

National
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UK
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Spending
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What is the UK National Debt?

At Budget time in March 2027:
The UK National Debt is estimated to be £3.05 trillion.

UK National Debt Analysis

This page shows the current trends in UK national debt. Click to download debt. Also see charts on UK debt history.

National
Debt

Total

Recent UK Total National Debt

Chart D.11t: Recent UK National Debt

Chart D.12t: Recent UK Nat. Debt as Pct GDP

Public Debt in the United Kingdom is principally the debt of the central government.

In 2005 the UK National Debt was less that £0.5 trillion. But then came the worldwide financial crisis of 2008 and subsequent recession. The National Debt increased rapidly and went over £1 trillion in 2011 and over £1.5 trillion in 2016. With COVID, debt exceeded £2 trillion in 2021. At the end of March 2026 the National Debt was £2.92 trillion.

In terms of Gross Domestic Product the UK National Debt in 2005 was about 38 percent of GDP.

But in the last ten years, in the wake of the Crash of 2008 and subsequent recession, the National Debt doubled to over 80 percent GDP, and exceeded 100 percent of GDP after COVID. At the end of March 2026 the National Debt was 95.3 percent of GDP.

UK Total Government Debt in the 20th Century

Chart D.13t: UK National Debt since 1900

The National Debt began the 20th century at about 30 percent of GDP. It jerked above 150 percent in World War I and stayed high. Debt breached 200 percent during World War II. Debt declined to 50 percent of GDP by the 1970s and dipped to 25 percent by 1990.

The financial crisis of 2008 cranked the National Debt up to over 80 percent of GDP. By 2019 the National Debt reached 83.9 percent of GDP. In 2026 the National Debt was 95.3 percent of GDP.

UK Total Government Debt since 1692

Chart D.14t: Three Centuries of UK National Debt

The National Debt began when William III engaged a syndicate of City merchants to market an issue of government debt. The syndicate became the Bank of England, and HM government debt began a century-long climb, financing Marlborough’s wars, wars against the French, against the North American colonial rebels, and peaking in 1815 at the end of the Napoleonic Wars at over 200 percent of GDP. After the war the debt entered a century-long decline. Government debt exploded in World War I and again in World War II where it reached the level of 1815 at over 200 percent of GDP. Debt declined below 50 percent of GDP by the 1970s. The National Debt began a rapid increase in the aftermath of the worldwide financial crisis of 2008, and notched up again in the global COVID crisis of 2020.