That is precisely the point that I am making. We certainly cannot be sure that, if the agreement were rejected, the EU would give us better terms. I do not believe for a moment that it would. In that case, the only other alternative is to think again about our notice under Article 50. That is what we need to face up to.
The amendment acknowledges that, since the decision to leave the EU was taken by the British people, a decision to withdraw our notice could also be taken only by the British people. That is where a further referendum comes in. It is not ignoring the will of the people but submitting to it. I realise that those who believe that the United Kingdom should leave the European Union oppose submitting the view of Parliament to a decision of the people. But I find it difficult to see why they regard themselves as more democratic than those who favour giving the people the final say.
Amendment 50 is also realistic about the timetable, as the noble Lord, the leader of the Liberal Democrats in this House has said. An agreement even in broad terms will not be reached until this October at the earliest. If Parliament rejects the agreement, time will be needed to legislate for a referendum and hold it. That would, in all likelihood, be impracticable before March 2019. So the amendment requires the Government to seek an extension of the Article 50 period for that purpose. It would, as has been acknowledged, be up to the EU partners to decide on whether such an extension should be granted, but if there is a prospect that it could enable the UK to stay within the EU, I believe that it would be granted.
Those who have reservations about a further referendum should not feel that they would be committing themselves by supporting this amendment tonight. It would be an option if, and only if, Parliament finds the outcome of the negotiations unacceptable. At that
point, it would be the only option. But the amendment ensures that Parliament would at least have that option, and I urge the House to support it.