I apologise to Mr Davis for being the chair of an all-party group that has produced such a reasonable report. We did it because we wanted to be constructive and to bring this House together. I want to draw attention to two points: first, the fact that this issue has brought the House together, and I will talk a little bit about that because it is in the power of this House to stop the Executive on this matter; and secondly, the nature of the retrospection, which is the issue that has caused me, as well as my constituents with such cases, to be so passionate about this issue.
First, on cross-party unity, I pay tribute to Ross Thomson, a vice-chair, who opened the debate, and Ruth Cadbury and all the other members of the all-party group, which represents six parties in this House. I thank all Members who spoke on Report of the Finance (No. 3) Bill, when we passed the amendment—quite unusually—because we had cross-party support from every side and political persuasion both between and within parties.
There is a reason why we got that support. It is because our constituents have come to us and we have seen the damage this is doing to their lives—real lives—but also because key principles of democracy are at stake: parliamentary sovereignty, if we can forget the Brexit debate for a minute, with respect to holding the Executive properly to account for the way they tax our constituents, and the rule of law. Those issues have brought this House together, and today we need to continue with that message and make it clear to the Minister and the Government that we are not going away until this is put right.