The Liberal Democrats have accused Jeremy Corbyn of failing Labour voters who wanted a different approach to Brexit, after he imposed a three-line whip on his MPs to abstain on a cross-party amendment to keep the UK in the single market.
Only 49 Labour MPs voted for the amendment, fewer than a fifth, while the rest abstained.
Liberal Democrat Leader Tim Farron said:
"Millions of people who voted for Jeremy Corbyn were hoping for a new approach to Brexit.
"They will be feeling utterly betrayed tonight that he has yet again failed to oppose this government's extreme Brexit agenda.
"On the most important issue of the day, Jeremy Corbyn ordered his MPs to sit on their hands.
"It's not too late to stand up for the jobs, opportunities and lower prices that rely on our free trade with Europe.
"The Liberal Democrats will work other parties to get the best possible deal, which should be put to the British people so they can choose whether to accept it or stay in the EU."