The hon. Lady talks about childish behaviour, but it was, of course, the SNP that walked out of proceedings in this House rather than participate in debate.

On her point about tipping over the economy, I would say that my right hon. Friend the Chancellor of the Exchequer understands the irony of a nationalist standing up in this House to talk about leaving an internal market, costing billions of pounds, when that is the SNP’s reason for existence.