Even in these days of Grand Canyon-sized party divisions on Brexit, if there is one thing that gets most Tories excited and on side it is talk of tax cuts. Some Tories may not like the cut of Donald Trump’s jib but they look longingly at his income tax and corporation tax cuts. If we want to make Britain great again, they think, we would like some of that.

Low taxes, Tories argue, are the best way to refresh a soggy economy and make the EU take notice. Dominic Raab, the Brexit secretary, did not demur from suggestions that corporation tax could be slashed to 10 per cent in the event of a no-deal Brexit. Part of Boris Johnson’s leadership pitch is lower taxes.

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