SCOTLAND’s pro-Union parties have attacked plans for an independent Scotland to establish its own currency in a proposed major SNP policy shift.

As revealed in The National yesterday, SNP depute leader Keith Brown and Finance Secretary Derek Mackay will put forward a motion to the party’s conference in Edinburgh next month that “it should now be party policy that an SNP Government in an independent Scotland would establish an independent currency”.

While Scotland would continue to use the pound in a transition period after a vote to become independent, Brown said this would not be “an open-ended commitment”.

The move comes amid speculation that First Minister Nicola Sturgeon will call for the power to hold a second referendum in the near future – expected to be rejected by Westminster – having said in January she would set out her thoughts on the issue in the “coming weeks”.

Plans for a Scottish currency mark a major shift on the SNP’s stance ahead of the 2014 independence referendum – when then-First Minister Alex Salmond said Scotland would continue to use the pound in a UK-wide currency union.

The Scottish Conservatives branded the latest plans “absurd” while other political opponents said they would impose austerity on Scotland.

Tory finance spokesman Murdo Fraser said: “Only four years ago Sturgeon and Salmond told us it was ‘Scotland’s pound’ and we’d be keeping it. Now they want to dump it, with massive consequences for people’s pay packets, mortgages and livelihoods.”

Scottish Labour leader Richard Leonard said: “The so-called Growth Commission outlines a further decade of austerity, with tax cuts and more power for big business, and fewer rights for workers. This is the exact opposite of what Scotland needs.”

Writing in The National, Brown said: “We will propose that it should now be party policy that an SNP Government in an independent Scotland would establish an independent currency.”

He added that until this “can be done safely and securely, our currency would continue to be the pound sterling”. He wrote: “The process of moving to a new currency must be managed robustly and be guided by the best interests of the Scottish people and economy – in short, it must be done at the right time, in a way that affords necessary protection for our nation’s economy and for people’s personal finances.

“We propose that necessary preparations, including the work of building the institutions that we need, such as an independent central bank, would begin during the transition period.

“And the aim of an SNP Government would be to complete preparations in time for the newly independent Scottish Parliament, informed by assessments and information from the central bank, to take a decision on establishing a new currency by the end of its first term.”

Sturgeon tweeted that Brown’s statements were “great”.