Vauxhall’s Brexit-supporting Labour MP Kate Hoey this week voted against her own party and backed handing sweeping powers to the Government.
Ms Hoey was one of seven Labour rebels to vote with Theresa May’s Tories on the European Union (Withdrawal) Bill.
A strong general election campaign by the Liberal Democrats earlier this year, standing up for the 78% of Lambeth voters who voted to Remain in the EU, put pressure on Ms Hoey over her record on Europe.
She had shifted significantly in her policy by polling day, putting on her literature her support for EU citizens’ rights and signing up to Shadow Brexit Secretary Keir Starmer’s plan for Brexit.
Her support for Labour’s plan did not extend to supporting her own party when it came to Monday’s late night vote, however.
The Great Repeal Bill is one of the most powerful laws ever to come before Parliament, not only transferring EU law into UK law but giving the Government power to write new laws without them being debated in Parliament - nicknamed Henry VIII powers.
Labour leader Jeremy Corbyn issued a three-line whip ordering his party’s MPs to vote against the bill.
Tom Brake, Liberal Democrat Brexit Spokesperson, said: “This is a dark day for the mother of parliaments. Labour rebels have handed the government sweeping anti-democratic powers.
“The Liberal Democrats will fight to amend the bill in Committee to stop this affront to democracy.”