Remember that Brexit referendum? Fancy doing it all again? Of all the various things Andy Burnham could say immediately upon becoming prime minister (as seems increasingly likely), this, surely, is the most far-fetched Still, ten years on from the historic vote , there is a growing call among some members of his party to do just that. So, what options does the next leader of the UK actually have, and are any of them more palatable? To start with the obvious, Brexit is costing us.