A Liberal Democrat MP has resigned the party whip as he wants to go against its stance and support Theresa May's Brexit deal.
This decision by Stephen Lloyd, the MP for Eastbourne, was confirmed by the party on Thursday.
It means he will no longer be bound by the party's internal rules and is no longer one of its MPs.
In his resignation letter to Alistair Carmichael, Lib Dem chief whip, Mr Lloyd said he had promised his constituents he would "support the deal the PM brought back from the EU and not back calls for a second referendum".
He wrote: "I appreciate me voting this way and not supporting a People's Vote, are counter to the Liberal Democrats' formal position.
"Consequently, I have decided the only honourable thing for me to do is to resign the party whip in Parliament."
He added: "Although I have resigned the whip, I continue to be a member of the Liberal Democrats, have nothing but respect and affection for the party leader, Sir Vince Cable MP, my Parliamentary colleagues and the Lib Dems."
Mr Lloyd had been the Lib Dem spokesperson for Work and Pensions.
A Liberal Democrat spokesman said: "We respect what we know was a difficult decision for Stephen ahead of next week's vote and are sorry to see him go. Liberal Democrats are clear that we will be voting against Theresa May's deal.
"The Liberal Democrats have campaigned for an exit from Brexit and a People's Vote where people can choose to remain in the European Union since the referendum was held.
"We will continue to fight for this in Parliament."
