To turn Keir Starmer, of all people, into someone who can credibly promise to bring immigration down is an act of perverse genius by the Tory party that is unparalleled in the modern political era. Presented with an open goal, the Labour leader has today stuck the ball in the net by telling readers of the Sun that his changed party will prove it is back in the service of working people by ‘not just talking about sky-high migration but acting on it’.