Further Brexit pressure on Corbyn from MPs and left-wing allies

A group of Labour MPs have joined the Liberal Democrats in calling for another referendum on Britain's EU membership.Eight Labour backbenchers, including four former shadow ministers, have signed an open letter calling for voters to be asked to choose between the final Brexit deal or remaining in the EU.Liberal Democrat leader Sir Vince Cable and the party's Brexit spokesman Tom Brake are also signatories, along with Labour MPs David Lammy, Tulip Siddiq, Wes Streeting, Mike Gapes, Neil Coyle, Ru