Consider the commitment to spend 0.7 per cent of national income on foreign aid. This was adopted by David Cameron in 2010 and belongs to an era when Mr Cameron was trying to appeal to the Left by visibly abandoning the Right. It proved to be a mistake. Setting a percentage target has meant that the money spent on aid has risen regardless of the UK’s ability to pay or the rest of the world’s need. Odd decisions have been taken: £4 million was sent to North Korea. And the National Audit office says that investigations into fraud involving foreign aid have quadrupled in five years. The policy is a bad one and, coincidentally, it has turned out to be an unpopular one, too. It may have won the hearts of a handful of Lib Dem voters but it has also become a byword for the liberal metropolitanism that Brexit was a revolt against.