G&G verified business evidence
UK SMEs generated an estimated £2.8 trillion in turnover at the start of 2025, accounting for 51% of private-sector turnover.
The underlying estimate is £2.828662 trillion. Turnover excludes financial and insurance activities because comparable turnover data are unavailable for that sector.
Financial and insurance activities are excluded from the turnover estimate.
Department for Business and Trade
Business population estimates for the UK and regions 2025: statistical release
Table C estimates SME turnover at £2.828662 trillion.
Department for Business and Trade. Business population estimates for the UK and regions 2025: statistical release. 2nd of October, 2025. https://www.gov.uk/government/statistics/business-population-estimates-2025/business-population-estimates-for-the-uk-and-regions-2025-statistical-release
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