Sir Keir Starmer has warned that Labour must “learn the lesson” of seeing a party policy used against it following a narrow defeat in the Uxbridge and South Ruislip by-election.
The Labour leader said there was “something very wrong” when a party policy was on “each and every Tory leaflet” following attacks on London mayor Sadiq Khan’s plan to expand the capital’s ultra low emission zone (Ulez), which applies a charge for the most polluting vehicles.