Let me start by saying I agree with him when he says that both sides of the campaign are guilty of making outlandish claims. However, I have many issues with this video.
Firstly, it should be pointed out that Professor Michael Dougan holds a Jean Monnet chair, which basically means he receives EU funding to study and promote EU law so he is hardly unbiased or independent.
Secondly, the video only focuses on a very narrow area of the EU debate, i.e. trade and sovereignty. He makes no real mention of people’s concerns about immigration, for example, or the impact that has on community relations, suppressing wages and keeping people in poverty, preventing affordable housing, the strains on the NHS, GPs, etc. Nor does he at any point consider that the EU is constantly changing or how it will look in future (the EU is committed to “ever closer Union” as well as admitting more, poorer countries), or what impact those changes will have on both us and the EU as a whole. Or the fact that the far right are increasing in popularity in Germany and France among other countries, including Austria and Britain, too of course, and that this is caused by EU failings and so is likely to get worse. Or the fact that the EU is economically stagnant and becoming less and less relevant in global trade terms. And so on – there’s so much more to this referendum than trade agreements that he doesn’t even scratch the surface of.
Thirdly, he states that Britain is a sovereign state with full control. If that's the case, then why were we treated to the unedifying spectacle of our Prime Minister going begging to the EU to be allowed to implement laws that the British people had voted for in the last election, only to be sent home with his tail between his legs? If we're a sovereign state in full control, why didn't we just enact those laws?
He also states that there will have to be a review of the UK legal system done so quickly that it will have to be done by government not through parliament. This is utter nonsense and another example of fear-mongering, albeit with a more respectable face than Cameron/Osborne. There are plenty of precedents of countries leaving unions and forming their own legislature (e.g. when India became independent from Britain, Poland after the fall of the Soviet Union, etc). In these cases, the leaving countries simply adopted the existing legislation as is and then gradually changed the ones that the people wished to be changed through normal parliamentary procedures. There is nothing stopping Britain doing this in the event of an 'out' vote. He must surely know this and so for him to talk about dishonesty on an industrial scale while making these claims is a bit rich.
He also says that if anyone tries to claim they know what'll happen if we vote to leave then they're "seriously deluded". I assume he’s referring to the Leave campaign here as the rest of his video is directed at them but this comment should really be aimed at the Remain camp, as they're the ones making all kinds of wild but specific financial predictions as to what will happen if we leave.
Finally, the video purports to be a discussion of "facts and figures circulated by both the 'Leave' and 'Remain' campaigns". Well, I’m sorry but I don’t see anywhere in the video where he discusses any facts and figures from the ‘Remain’ campaign. All he discusses are the claims made by the Leave campaign that he disagrees with. And at no point does he discuss the dishonest claims made by the Remain camp (he does admit they’ve been dishonest), or anything that’s wrong with the EU or its failures – the Exchange Rate Mechanism (remember that disaster?), the current predicament of Greece, with Spain and Italy also suffering, the Schengen Area, etc. Where is his assessment of the Remain claims that pensioners will be £4,300 worse off, mortgages will go up £920, your weekly shop will go up by £220, etc, if he considers that anyone that claims to know what will happen to be “seriously deluded”.
Hardly an objective and independent assessment of the debate, and not one upon which to base your decision.