The Economist 3rd January 2023
Outside the Paywall
John Springford, Centre for European Reform, a think-tank, tries to isolate the effect of Brexit by constructing a phantom country that tracked Britain’s performance before 2016’s referendum result.
He estimates that by the second quarter of 2022, Brexit had hit GDP by as much as 6% relative to this counterfactual. Using the same method, he reckons that Brexit dragged down investment by 11%.