When Radio 5’s Simon Mayo asked Ken Clarke yesterday what slogan he would put on a pro-constitution billboard, Mr Clarke’s suggestion was:

“The constitution makes the decision-making clearer and easier inside a Union of twenty-five, when the old rules that applied to six won’t apply, and it makes no significant extension of powers to the EU – what it does do is make it clearer than ever before that this is to be a union of nation states and not a federal superstate and it, I think, will enable us to take clearer decisions, it will stop the competence of the Union being extended surreptitiously as some people fear it might, and it will, I hope, enable us to get more workmanlike in this giant organisation we have now created on the key things like striking up some common foreign security policy attitudes, making sure democracy, liberal values, free market economies are truly entrenched in the ex-Communist states in the East, making sure Europe’s voice in the world continues to be heard against the Americans, the Chinese, the Indians, our friends and our enemies, and making sure that we get the best advantage out of what is in terms of population the biggest free market in today’s globalised economy.”

It had better be a big billboard.