THE SNP’s Westminster leader has threatened to cause “maximum disruption” to the UK government’s programme in the Commons if it continues to show Scotland disrespect.

Ian Blackford told delegates at the SNP conference in Glasgow that his 35-strong group would not allow Scotland to be treated as a “not a second class nation”.

The Highlands MP suggested there could be more obstructionist tactics along the line of his own walk-out from the Commons in June.

Mr Blackford and the other SNP MPs left the chamber during Prime Minister’s Questions in protest over a ‘power grab’ on devolution caused by the EU Withdrawal Bill.

He said the party’s Westminster group would not allow Scotland’s voice to be ignored or the Scottish Parliament’s powers to be eroded over Brexit.

To applause from delegates at the SEC campus, he said: “The Tories think they can do whatever they want to Scotland and get away with it. Well they cannot.

“Thousands of people joined us the day that the SNP walked out of Westminster to show the Prime Minister we will not have our parliament, our people, our country disrespected.

“Scotland will not be treated as a second class nation. We must act to protect our parliament and Scotland’s voice.

“In Westminster, your SNP MPs will do all the we can to protect devolution. Let those in Westminster hear this.

“If contempt continues to be shown to the people of Scotland and to our parliament, SNP MPs will not hesitate in causing maximum disruption to the Tory government’s agenda when and where Scotland needs us to.”

Mr Blackford, who became Westminster leader after last year’s general election, said the party would “work constructively” with others, but said not allow “unprecedented economic damage” to be caused by the UK and Scotland being taken of the EU single market and customs union.

He said: “The Prime Minister needs to accept that Chequers has bounced.

“Let me be clear: the SNP will not give in to ultimatums. We will not follow the Tories through any lobby that leads to economic disruption for citizens across Scotland and the rest of the UK.

“We will not sit back and allow Scotland to be dragged out of the single market and the customs union

“We will not be complicit in a blind or no deal Brexit. When the time comes ot vote on a Brexit deal, the only deal we will accept is one that keeps Scotland in the single market and the customs union. Any other deal sells us short.

“I put the Prime Minister on notice here today - we will not support any measure, any measure, that threatens Scottish jobs and living standards.

“We will not sit back and allow Scotland to be treated the way that Westminster wants.”

He went on: "The people of Scotland didn’t vote for this Tory government, they didn’t vote to have a referendum on leaving the EU, they didn’t vote for Brexit, they didn’t vote for a hard Brexit and they certainly didn’t vote to come crashing out of the EU with no deal.”