London Mayor Boris Johnson´s message to Obama:
"For the United States to tell us in the UK that we must surrender control of so much of our democracy - it is a breathtaking example of the principle of do as I say but not as I do.
"It is incoherent. It is inconsistent, and yes it is downright hypocritical. The Americans would never contemplate anything like the EU, for themselves or for their neighbours in their own hemisphere. Why should they think it right for us?"