Studies Estimate Brexit Reduced UK Economic Output, With Discrepancies in Metrics
Multiple studies have estimated economic costs from Brexit, though figures vary in scope and measurement. Accounts differ on whether the 8% figure refers to average impact over a decade or GDP per head in 2025. A study estimates Brexit cost the UK 6% of its economy over the decade following the 2016 referendum. Another study, using combined analytical methods, estimates an average impact of around
A study estimates that Brexit cost the UK 6% of its economy over the decade following the June 2016 referendum, according to jamieclaw.github.io. Another study, also cited by jamieclaw.github.io, estimates that Brexit led to an 8% reduction in UK GDP per head in 2025, according to mercopress. Accounts differ on whether this 8% figure represents an average across multiple analytical methods over a decade or a specific GDP per head projection for 2025; no source confirms the metrics are equivalent. A study cited by jamieclaw.github.io attributes approximately half of the economic damage to post-referendum uncertainty and the other half to increased trade barriers after the UK exited the EU customs union and single market in 2021. Bank of England Governor Andrew Bailey acknowledged negative effects on financial services but stated they were less severe than early predictions. Prime Minister Starmer announced plans for a July EU summit, according to jamieclaw.github.io.
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