Chuka Umunna Portrait Mr Umunna
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That is absolutely right, and I completely agree with the right hon. Gentleman. I come to the point that the hon. Member for Lincoln (Karl MᶜCartney) made about the Conservative party—[Interruption.] Admittedly, it could also apply to some people from the Labour party. Some say that the pledges were made primarily by people who may have been members of a Conservative Government, but who did not speak with the authority of that Government. Of the five Cabinet Members I have mentioned who took leading roles in the campaign, three were members of the Government at the time and one, the Foreign Secretary, attended the political Cabinet. Part of the reason why those key campaigners were put up to do media and to campaign for Vote Leave was that they carried the authority of being Ministers. We cannot detach one from the other.

The other, and connected, argument that is made is that the commitment was given by one side in a referendum campaign, not by a Government, so we should leave the matter alone and get on with things—we should all shut up. I am sorry, but I do not think that that will wash. Whether they were Ministers or not, all the key Vote Leave campaigners were Members of this House. As I have said, if our democracy is to mean anything, it is that Members of this House answer and are held to account in this House for the promises that they make to the people. After all, as has been said, they campaigned in the name of parliamentary sovereignty. If Parliament is sovereign, they should be held to account here.

Chuka Umunna Portrait Mr Umunna
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I will not give way; I am going to finish.

Either those people made the pledge in the expectation of delivering on it, in which case they must now show us the money and vote for this very reasonable amendment, or they made it in the knowledge that it would never be met, in which case they will never be forgiven for their betrayal of those who, in good faith, relied on that promise.

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Michael Gove Portrait Michael Gove
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My hon. Friend is absolutely right. New clause 40, tabled by the hon. Member for Bishop Auckland, states that the Prime Minister must, before even

“exercising the power under section 1”

and before triggering article 50, publish an impact assessment of the effect on the United Kingdom of leaving the customs union. How can we know that?

I am sanguine about leaving. I take the lead from Shanker Singham and other distinguished trade negotiators that leaving the United Kingdom—[Interruption.] A Freudian slip: I mean leaving the customs union—will lead not just to GDP growth in the United Kingdom, but across the world. I take that view, but it is entirely open to others to take a different view, and it is entirely open to Her Majesty’s Government to choose to follow policies that, once we have left the customs union, will either maximise or minimise our GDP. Once again, by insisting on a narrow focus on what is believed to be one truth and holding up the advance of this legislation as a result, the promoters of this new clause are, I am afraid, once again seeking to frustrate democracy.

Nigel Huddleston Portrait Nigel Huddleston
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I certainly welcome my right hon. Friend’s conversion to listening to experts. Does he agree with me, though, that no good will come to British business or to our constituents if all we do for the next two years is rehash the results of or indeed the debate about the referendum? I respectfully disagreed with my right hon. Friend during the referendum, and I am sure we will respectfully disagree for many times to come, but this is not going to help the outcome of the Brexit decision.

Michael Gove Portrait Michael Gove
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I entirely agree, and my hon. Friend makes two important points. Of course, we had the referendum and some people on the remain side feel sore because they think the result was not just a betrayal of their hopes, but was won by means that, to put it mildly, they do not entirely endorse. I absolutely understand that, and there is a responsibility on those of us who argued for leave to listen carefully and to seek to include in the type of new relationship we have with the European Union the very best ambitions and aspirations that were put forward as reasons for staying. I think that can be done and that this House has a critical role in bringing it about, but it can be done only once article 50 has been triggered and the British people have had the confidence that we are leaving.