The SNP has "absolutely no mandate" to hold a second referendum on independence, Labour MP Ian Murray has told the party's Scottish conference.
Mr Murray said Labour would oppose any moves to hold a second vote as he opened a debate on proposals for a more federal UK.
The party's only Scottish MP issued the warning amid growing speculation Nicola Sturgeon will announce a rerun of the 2014 independence ballot in the coming weeks.
Read more: Business chiefs to bankroll fight against independence
"I want to make it absolutely clear to both Nicola Sturgeon, and indeed to Ruth Davidson, the SNP has absolutely no mandate for another Scottish independence referendum," Mr Murray said.
"If they try to push one through, Scottish Labour will oppose it in the Scottish Parliament all the way."
The First Minister has said another referendum is "highly likely" following the Brexit vote last year.
Mr Murray said the Conservatives were to blame for the prospect of another vote dominating the political agenda, branding the party as the "the SNP enablers".
"It is they who are really responsible for this current mess - Nicola Sturgeon's mibbes aye, mibbes naw referendum," he said.
"Thanks to them, the constitution has barely been off the agenda since the early hours of September 19."
Read more: Business chiefs to bankroll fight against independence
Mr Murray asked party members to endorse Scottish leader Kezia Dugdale's vision for a new "Act of Union" for the UK in response to both Brexit and calls for a second independence referendum.
A motion put before the conference in Perth calls on the UK party to convene a "People's Constitutional Convention", made up of citizens from across the UK, which would then report back before the 2020 general election.
That convention is part of Ms Dugdale's proposals for a more federal UK, which would also see increased powers for Holyrood, Cardiff Bay, Stormont and the English regions.
Mr Murray said: "The vision before you today is one of hope and optimism.
"It will mean that every part of the UK and every part of Scotland is contributing to our success.
"It will reforge our democracy and our society, and safeguard it for the future.
"This is an historic moment for our party. Labour, the party of devolution - now ready to seize the mantle as the party of federalism.
"The party that stands up for what the majority of people in Scotland want - firmly, unquestionably opposed to independence, but also opposed to the status quo. The party that believes together we're stronger.
Read more: Business chiefs to bankroll fight against independence
"Today our country is deeply divided, not just by constitutional politics but by economic inequality.
"To restore faith in our politics, to build a more united society and create an economy that works for working people, we believe that we need to create a more federal UK."
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules hereLast Updated:
Report this comment Cancel