Nicola Sturgeon has called on the UK Government to make clear whether the Scottish Parliament will be asked for its consent on key Brexit legislation.

The First Minister said it would be "unthinkable" if MSPs are not asked to give formal legislative consent to the Great Repeal Bill, but added there is no "clear and emphatic acceptance" from the Conservatives at Westminster on the issue.

She called for clarity after Theresa May said there is a ''possibility'' the Bill, which overturns the 1972 Act which took Britain into the European Economic Community, would need a legislative consent motion (LCM) in the Scottish Parliament.

The Prime Minister said the matter is "currently being considered both here and in Scotland", although her Scottish Secretary David Mundell has already said he is working on the basis that an LCM would be required.

Ms Sturgeon said: "Despite the hints we got yesterday that there is still no clear and emphatic acceptance on behalf of the UK Government that the Repeal Bill will require the legislative consent of this Parliament.

"It is unthinkable that anything else would be the case, so maybe the Tories could just confirm that and stop prevaricating upon it?"

The First Minister said she remained "extremely concerned" about a Brexit power-grab by Westminster, saying there "appear to be plans to centralise power in the hands of Whitehall as powers comes back from Brussels".

The SNP leader, speaking at First Minister's Questions, went on to brand the Conservative Queen's Speech "humiliating vacuous".

When asked for her response to it, Ms Sturgeon said: "There's not much in the Queen's Speech to respond to, it's fair to say.

"Clearly the Tories at Westminster have given up entirely on the day job beyond any doubt."

She said the only thing in the programme were "damaging plans to rip the UK not just out of the EU but out of the single market" - a move she claimed would result in "economic destruction".

Ms Sturgeon also made clear she wants her Government to be represented in the Brexit talks as she turned on the Conservatives for giving MEP Ian Duncan a peerage so he can become the new Scotland Office minister.

Mr Duncan had stood against veteran SNP MP Pete Wishart in the recent General Election, and lost out to the nationalist by just 21 votes in Perth and North Perthshire.

Ms Sturgeon said her remarks are "not personal against the individual concerned" but she claimed it is "absolutely outrageous" someone who was "defeated at the ballot box fairly and squarely in an election" was to be made a Lord and installed as a minister in the Scotland Office.

She said: "It is an absolute abomination and shows what contempt the Tories have for democracy.

"The way to involve Scotland in these Brexit talks is to... have the democratically elected Scottish Government at the negotiating table."

Mr Mundell said later: "I'm very relaxed about the legislative consent process, we're going to seek it.

"I think it would be incredible that the Scottish Parliament would, one, turn down a measure that would bring the body of European law into Scots law because if they don't there's incredible uncertainty and, two, would decline additional powers and responsibilities.

"I'm confident that this will be agreed because it is right for Scotland and it would not be tenable to argue otherwise.

"We're very clear that the United Kingdom is the member state of the EU and while we will work very closely, as we have throughout, with the Scottish Government it will be the United Kingdom Government that will be conducting the negotiations."