Dr Julian Lewis: Talking about membership of the European Union, did the Prime Minister pick up, although no doubt it was not on the formal agenda, whether or not an independent Scotland would have to reapply to join, and if so, whether it would have to join the euro?

[The Prime Minister: My hon. Friend makes an important point. There was no formal discussion, but the issue was discussed in the margins, as it were, because a number of countries take an interest in it. The letter from José Manuel Barroso is pretty clear: Scotland would have to apply to join the European Union. Obviously, Britain is the only country that has a legal, binding, copper-bottom opt-out from the euro. All the other countries, by and large, are committed to join the euro – [Interruption .] And Schengen, as the hon. Gentleman says. That is important for the Scottish debate.]