SNP MPs cause uproar as they walk out of PMQs with Blackford

Media playback is unsupported on your device                  Media captionSNP MPs walk out of PMQs in Commons

Media playback is unsupported on your device Media captionSNP MPs walk out of PMQs in Commons

Speaking to the BBC immediately after the incident, Mr Blackford said: "Scotland's voice has not been heard, we have had changes to the devolution settlement that were pushed through last night without Scottish MPs voices being heard".

The passing of the EU Withdrawal Bill meant powers which were supposed to return to the Scottish Parliament after the United Kingdom leaves the EU would go to Westminster for a period of seven years, a move which SNP MPs broke with the Sewel convention that changes to devolution would not occur without the consent of the Scottish Parliament.

He used the parliamentary procedure to ensure the will of the Scottish Parliament is respected and that Brexit legislation pauses until the Scottish Parliament's motion is considered as the United Kingdom leaves the European Union.

Mr Blackford said Scotland had been "plunged into a constitutional crisis" as a result of the UK Government's actions and demanded that emergency legislation be brought forward. The tension is not only between parties: After Prime Minister Theresa May saw off a rebellion on Tuesday evening by offering concessions to pro-European Union Conservative lawmakers, the warring Tory factions spent the evening at drinks parties describing each other in increasingly derogatory language.

"It is a power grab and MPs from Scotland were not even given the courtesy of debating it last night".

Turning to the speaker, he said: "Under the circumstances, given the disrespect shown, I have got no option but to ask that this House sits in private".

"I'm not hearing that at this time and it is my clear understanding that I'm not obliged to do so", said the speaker. Proceedings on the EU Withdrawal Bill last night were a democratic outrage and the Scottish Parliament must be respected.

He stated: "I really do hope that the people of Scotland listened very carefully to what the prime minister said, because the reality of the situation is that powers enshrined under the Scotland Act 1998 are being grabbed back by this parliament today".

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Liddell-Grainger later told Somerset Live that he had "made a remark about "political suicide" and that critics could "take their objections and stuff them".

Bercow noted: "And I've just been advised that the father is the Honourable gentleman, the member for Norwich South [Labour MP Clive Lewis]".

The SNP says it will now seek to build a new power-sharing deal for Scotland, Brexit minister Michael Russell told Reuters.

After repeatedly asking the MP for Ross, Skye and Lochaber to take his seat, the Speaker expelled him from the Chamber for the rest of the day.

All of the SNP's 35 MPs then stood up and walked out collectively.

He added the issue would "haunt the Scottish Tories for a generation".

A protest against what the SNP claims is a "Westminster power grab" was due to be held outside the Scottish Parliament ahead of Thursday's session of First Minister's Questions.

Green MP Caroline Lucas said she could "completely sympathise" with the walk out.

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