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Spending Data Sources
Expenditure data since 1983 comes from HM Treasury’s Public Expenditure Statistical Analysis reports.
Detailed table of spending data sources here.
Gross Domestic Product data comes from measuringworth.com.
Central government spending data begins in 1692.
Local authority spending data begins in 1868.
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Data Sources for 2027:
GDP: OBR EFO supp. economy tables
Spending: HM Treasury PESA
Debt: OBR Public Finances Databank
> spending data sources for other years
On July 23, 2026 ukpublicspending.co.uk updated UK GDP and public debt outturn and forecasts released with the Office of Budget Responsibility in March 2026.
Recent and forecast GDP comes from the UK Office of Budget Responsibility's Economic and fiscal outlook report, using table 1.1 from tab "1.1" and table 1.2 from tab "1.2" in a spreadsheet file labeled "March 2026 Economic and fiscal outlook -- detailed forecast tables: economy". UK GDP previous to 2009 comes from Measuring Worth. The data goes back to 1700.
Note that chain-linked GDP is now in 2019 pounds.
Public sector net debt, outturn and forecast, comes from a tab called "Aggregates (£bn)" in the Public Finances Databank spreadsheet at the Office of Budget Responsibility.
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