You asked

​​How much did defence expenditure contribute to UK GDP in the last 5 years?

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General Government expenditure data by function of Government

Please see the following table, which contains the requested information.

Defence expenditure

Defence expenditure contributing to GDP is sourced from the latest Classification of Function of Government (COFOG) release, which was published in April 2020.

Please see the following link to the publication on our website, which contains this information: General government annual expenditure: ESA Table 11.

Defence expenditure (COFOG 2) in this release includes Military Defence, Civil Defence, Foreign Military Aid, Research and Development Defence and Defence not elsewhere classified.