London / Bloomberg
Mayor Boris Johnson said the UK would have a â€œgreat futureâ€ if it votes to leave the 28-member European Union in a referendum planned for this June.
â€œThis is a once-in-a-lifetime thing,â€ Johnson said. â€œIt is not going to come round again. If we donâ€™t do it now this thing is just going to grind on and become less and less democratic and more and more burdensome.â€