The Scottish National Party’s MPs in Westminster will back any vote in Parliament to hold a second Brexit referendum.
Scotland First Minister Nicola Sturgeon made the pledge on a ‘People’s Vote’ on any final Brexit deal as cross-party support grows for it nationwide.
She also reiterated that her MPs would vote against the final Brexit deal as currently proposed by Theresa May and her Government.
Ms Sturgeon told the BBC’s Andrew Marr show: “I cannot envisage voting for a deal that does not include membership of the single market and customs union.”
But on any ‘People’s Vote’ she said: “I would expect the SNP MPs to vote for that, if that comes to a vote in the House of Commons.”
She also told Marr she would reveal plans for a second referendum on Scottish independence once any Brexit deal is announced.
Ms Sturgeon said: “We’re on a journey that will end in independence. Brexit brings the issues around this very sharply into focus.”
The 35 Scottish National MPs comprise Westminster’s third largest party grouping and could have a vital influence on any Brexit vote.
If they vote against Mrs May’s proposals, her chances of getting any deal through Parliament would be slim
Rebel Tories have said they will vote against any deal based in the Prime Minister’s Chequers plan.
Labour are also promising to vote down any deal the Prime Minister comes back with.
Ian Blackford, the SNP leader in Westminster, said he and his bloc would cause “maximum disruption” to Government plans if they ignored Scotland’s views on Brexit.
The party has made it clear it will not accept any deal that does not include membership of the single market and customs union.