Is the United Kingdom swinging against Brexit? That’s the conclusion of a 20,000-person mega-poll by Survation for Channel 4, which finds that Remain leads Leave by 54 to 46 per cent. The poll comes with the warm glow of being produced by the one traditional polling company to get the 2017 election result right, and also its size, but it is, of course, just one poll. It does, however, echo the general shift towards Remain that most polls have shown.