I can be extremely brief. I just want to take up one point that the noble Lord, Lord Hain, raised earlier. He acknowledged the significance of immigration to the result of the referendum. He did not say that it was the main reason but he acknowledged its significance. So it seems to me that a key question is whether we can stay in the single market and control immigration. He mentioned that other countries such as Belgium have found a way to control immigration within the single market by removing people without a job.
The situation in the UK is entirely different from that of Belgium. We have more than 2 million European citizens working here—which is fine, but we cannot skate over the fact that the whole situation is different. The numbers are much larger. Noble Lords may not know that last year 625,000 EU citizens took out national insurance numbers. They will not all be working; some will be short term. But the scale of it is enormous. We know that net EU migration is 180,000, equal almost to that from the rest of the world. There is no prospect of any serious measures of control if we remain in the single market.