Labour has marched into an 11-point lead over the Conservatives in the latest poll, as Boris Johnson comes under increasing pressure over the Partygate scandal.
A steady flow of Tory MPs have called for the prime minister to go in the wake of the Sue Gray report – with a growing number worried that the party is heading for defeat at the next general election.
The latest Savanta ComRes survey puts Sir Keir Starmer’s party on 42 per cent – up two points from the firm’s last poll, and Mr Johnson’s party down three on 31 per cent.