Dr Julian Lewis: The Prime Minister has again said that there is no constitutional bar to our entry into economic and monetary union. Does that mean that no loss, however great, of political sovereignty would deter him and his Government from entering economic and monetary union, provided that what they regard as economic conditions alone were right?

[N.B. The Prime Minister's revealing answer was: "No, it simply means that we should judge whether we enter monetary union according to our national interest, and that is defined by the economic tests that we have set."]