Nicola Sturgeon said after the Supreme Court ruling that it was becoming “ever clearer” that Scotland must have a new independence referendum, as its voice was “simply not being heard or listened to within the UK”.

She said the claims from Theresa May that Scotland was an equal partner were being exposed as “nothing more than empty rhetoric” and the foundations of the devolution settlement were “being shown to be worthless”.

The SNP has also promised to put forward 50 "serious and substantive" amendments to the Brexit bill, including a proposal that the UK would stay in the EU under “revised” membership if MPs reject the final deal with Brussels.

Another amendment will demand that the UK Government seeks the unanimous agreement of the Joint Ministerial Committee - which brings together the devolved administrations - that the triggering of Article 50 “encompasses the devolved administrations of Scotland, Wales and Northern Ireland”.