I rise to speak in favour of the amendment tabled by the right hon. and learned Member for Beaconsfield (Mr Grieve) to preserve Lords amendment 19P, which would ensure that Parliament has a meaningful vote in the Brexit process. We need to be clear about what this amendment is and what it is not. It is not about frustrating or blocking Brexit, it is not about tying the hands of the UK negotiators, and it would not empower Parliament to direct the Government in the ongoing negotiations. It is simply about this House playing a meaningful role in the terms of the final Brexit deal. It is about making sure that on the most important peacetime issue this House has faced for a generation, this House is not silenced. This amendment addresses two issues: what happens if Parliament rejects the Prime Minister's proposed article 50 deal in the autumn; and what happens if by 21 January next year there is no article 50 deal or no prospect of an article 50 deal. The Prime Minister has consistently said, “Tough luck; if you don't like my proposed deal you can have something much worse.â€ That is not meaningful. The Brexit Secretary, once a great guardian of the role of this House, now wants to sideline Parliament when its voice is most needed. He says that in the event that the Prime Minister's proposed article 50 deal is rejected by Parliament or there is no article 50 deal, a Minister will make a statement. Well, I should think so-after two years of negotiation, the Government bring back a deal which is rejected and a Minister will make a statement. And he says that will happen not in 28 days, but in 21 days-that is democracy; that is giving Parliament a real voice. And then a further safeguard: there will be a neutral motion. There is an example of a neutral motion on today's Order Paper. There is to be a debate about NATO and what will be decided is this:“That this House has considered NATO.â€That is the additional safeguard-“That this House has considered the article 50 deal.â€ And that is it; that will be the role of this House on the most important decision that we will make in this Parliament. No one who values parliamentary sovereignty should accept either approach, and that is why the amendment is crucial. It would require the Government to back up any statement made by a Minister with a motion that can be voted on. It would permit Parliament to have a meaningful say, but only after negotiations are complete. Of course the very idea of Parliament actually having a say prompts the usual cries, and I have no doubt that many of the interventions will be along these lines, so let me deal with them. The usual cries are these: “It's an attempt to frustrate Brexit,â€ “It will weaken the Prime Minister's negotiating hand,â€ “Parliament cannot micromanage negotiations.â€ So let me meet those objections. First, we have heard it all before. In August 2016 we challenged the Government to produce a plan. What did they say? It would frustrate Brexit, it would tie our hands and it would play into the hands of the EU. Then they had to accept a motion to produce a plan, and the sky did not fall in. In the autumn of 2016 we challenged the Government to give Members of this House a vote on the proposed article 50 deal, and got the same response from the same people in this House-it would frustrate the process, it would tie the Prime Minister's hands and it would play into the hands of the EU. Then we had the Lancaster House speech in January 2017; the Prime Minister agreed to give MPs a vote, and the sky did not fall in. In December 2017, we challenged the Government to put the article 50 vote into legislation. That was contested through amendment 7, for the usual reasons. We received the usual response: it would frustrate Brexit, it would play into the hands of the EU and it would tie the Prime Minister's hands. Amendment 7 was voted on, and the vote went against the Government. The sky did not fall in. In February this year, we challenged the Government to publish the impact assessments. We got the usual response: it would frustrate Brexit, it would tie the Prime Minister's hands and it would play into the hands of the EU. Then the impact assessments were published, and the sky did not fall in. This amendment is not about frustrating the process; it is about making sure that there is a process. Secondly, we have to confront the fact that the biggest threat to an orderly Brexit, and the biggest threat of having no deal, is and always has been division at the heart of the Government. They cannot agree the fundamentals. The customs arrangements were hardly an unexpected issue. No one should be under any illusion that the EU cannot see the fundamental weakness of the Government's position.