If Sir Keir Starmer wins the General Election in July, he has a tightrope to walk. On the one hand, he is trying to move away from Labour’s record as the remainer party – with opposition figures again and again trying to draw attention to the party’s previous calls for a second referednum. But on the other hand, he is seen as a much more likely EU ally than any of the previous Tory prime ministers who have served since Brexit – a hope in Brussels which is not misplaced. If he is the UK’s next prime minister, Starmer is expected to attempt to prove that Britain can be a reliable friend to the E…