Tommy Sheppard has dismantled arguments against the SNP's mandate for indyref2 in an imperious Commons display.

The SNP MP also painted a stark picture of post-Brexit Britain in a series of powerful speeches.

The comments came during the debate on the European Union (Withdrawal Agreement) Bill, which cleared the Commons with a majority of 99.

Read the full exchange below.

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Tommy Sheppard (Edinburgh East) (SNP): It feels as though we have been at this for quite a long time. Here we are at, perhaps, one minute to midnight, and we have probably the penultimate opportunity to discuss these matters before the deed is done. It is a matter of some sadness to me that the proposals before us today are an even more myopic, small-minded and miserable set of proposals than the ones that were mooted at the beginning. I was sent here at the election of 12 December to oppose them, which is why I will vote for the amendment and against the substantive motion this evening.

There are many reasons why that is so, but I shall touch on just four. First, this course of action diminishes the character of the people who live in these islands. It makes us seem selfish, unco-operative and insular, and I do not believe that that accurately characterises the people who live not just in Scotland, but in England too.

Secondly, these proposals make foreigners out of many of our neighbours who have lived among us for a generation or more. In my own city, tens of thousands of people who were born in mainland Europe but have made the decision to raise their families and build their homes and careers in our communities will lose their status, or have it fundamentally altered. More important, in the longer term, the loss of freedom of movement will pose an existential threat to the future prosperity of my country.

Thirdly, the proposals represent a fundamental shift in the relationship between the devolved Administrations in the United Kingdom and the central Government. That is not to say that when we talk about a power grab it means that some responsibilities are being taken away from the Scottish Government. I do not say that. The responsibilities remain, but the power to act in those areas is being severely constrained and curtailed by frameworks and statutes set by this Parliament—even to the extent, in these proposals, that United Kingdom Ministers are taking the power to make secondary legislation in areas that this Parliament has decided should be devolved to the Scottish Parliament.

Finally, I am against the proposals because they will impoverish the people whom I represent. I do not say that this catastrophe will be visited on us the day after exit day; I do not even say that it will happen in the weeks and months after that; but there will be a slow, insidious, grinding reduction in the living standards of the people of this country, until we wake up in a few years’ time and realise that we are so much poorer than we might have been, and so much poorer than similar communities in mainland Europe.

WATCH: SNP MP tears into Boris Johnson's 'crap' Brexit Bill​

Toby Perkins (Chesterfield) (Labour): The hon. Gentleman and I have voted in the same way on many parts of this Bill. He is right to say that all the forecasts suggest that Brexit will make people in Britain poorer, but those same forecasts say that Scotland leaving the UK will make Britain poorer, so why is he in favour of that?

Sheppard They do not say that. I will happily supply the hon. Member with lots of compelling evidence as to why Scotland would prosper as an independent country rather than being dragged down by the central Government of the United Kingdom.

I know that many people are looking to the future in this debate, and that many envision this as a bright new dawn for the United Kingdom. They see a world where the authority and status of this nation will be restored in the eyes of the world. I know that people genuinely think that—I do not say that they are insincere in this belief—but I do say that it is a delusion, a mirage, to suggest that this will happen. If you want evidence for this, look no further than what has been happening over recent months. A compromised United Kingdom Government, understanding that their ability to negotiate a trade agreement with the United States will be so much more diminished compared with their ability as part of a major European bloc, have got themselves into the embarrassing situation of demonstrating servility to the Trump Administration in order to try to protect their future economic prosperity. That is what the future holds. We will have to make unholy alliances and awful justifications for doing deals with certain people in order to get trade agreements.

I am sure that there are Conservative Members who have sympathy with some of the points that I have made but they are not going to express them today, because that great political party—arguably the greatest, historically, in Great Britain—has got itself into a situation whereby it is impossible to progress in that party unless one evangelises the cause of Brexit. Dissenting voices are no longer allowed. The right hon. Member for North Shropshire (Mr Paterson) is typical of many whose joy and enthusiasm for what is about to happen are unbridled. He cannot wait to pop the champagne corks and break out the bunting in celebration, but I am afraid that the future is nowhere near as rosy as he expects. He and others who have chosen this path are going to be severely disappointed.

Jim McMahon (Oldham West and Royton) (Labour/Co-op): Does the hon. Member agree that, regardless of our political views on whether Brexit is good or bad, the reality is where we are? Does he also agree that all Members need an evidence base on which to make informed decisions? Does he share my concern that the Regulatory Policy Committee report that was issued in October stated that the Committee did not have sufficient time to make a proper assessment of the impact and that it had not been able to meet Ministers? Surely there has been sufficient time between October and now to rebuild that impact assessment so that we may all know what we are voting for.

Sheppard: Throughout this entire process, we have been asked to take decisions without adequate information, so that is entirely consistent with the way in which this matter has been conducted.

I want to move on to consider the question of political mandates, which are quite important in this discussion. To do that, we have to consider the election that took place on 12 December, in which people were asked their view and Brexit was very much the central issue of the campaign, certainly in most of the United Kingdom. Others have said—my hon. Friend the Member for Na h-Eileanan an Iar (Angus Brendan MacNeil) has said it repeatedly—that a majority of the people who voted in that election throughout the United Kingdom voted for parties that either wanted to stop Brexit altogether or wanted a fundamental re-examination of the terms on which it was being proposed.

Sheppard continues: The point is that we have a Government elected on 43% of the vote in an electoral system that I believe corrupts the expression of popular opinion across Parliament, rather than allowing it to be deliberated. But rules are rules, and we all went into the election understanding the rules of engagement and what the contest would be. I am not in any way saying that I do not accept the result and the Government, even with 43% on a first-past-the-post basis and a majority of more than 86, have a legitimate democratic mandate not just in principle to leave the European Union, but to deliver Brexit on the terms that it proposed to the electorate. I accept that.

However, I do not accept—this is my central contention—that that mandate runs in Scotland. The 12 December vote was very much a tale of two election campaigns. The Conservative party won the campaign in England, which was dominated by the relationship that this country will have with the European Union. The SNP won the campaign in Scotland, which was dominated by whether Scotland would have the right to choose to go down the path set here by the United Kingdom—[Interruption.] I am being heckled by the right hon. Member for Braintree (James Cleverly), who I think is still a co-chair of the Conservative party, so let me explain and offer some rationale. I do not say these things glibly.

Others have talked about statistics. The Scottish National party won the election in 80% of the areas in which it was contested in Scotland, and 80% of the Members of Parliament returned here from Scotland are from the SNP. We won 45% of the popular vote, and the central proposition that we put to the electorate was that Scotland and the people who live in Scotland should have the right to choose how they are governed and whether they want to go down the path chosen by the United Kingdom Government.

There are echoes and similarities between what happened in December 2019 and what happened in May 2015. Then, as now, a Conservative Government were returned with a majority. Then, as now, the SNP won an overwhelming majority of seats in Scotland. The difference is that in 2015 we did not seek a mandate from the people of Scotland in relation to the constitutional position or how the country should be governed. We did not do that because the election took place just months after the 2014 referendum, when the electorate made a choice and decided to remain in the United Kingdom. That does not apply now, because in December 2019 we went to the Scottish electorate and explicitly asked them to endorse the proposition that people who live in Scotland should have the right to choose how they are governed and whether they wish to go down the Brexit path being offered by the United Kingdom Government.