Clegg: Referendum if UK and Europe's relationship alters
Deputy Prime Minister Nick Clegg said the "British people should have their say" if there is a "significant change" between the UK and Europe's relationship, during an interview with BBC Radio 4.
Mr Clegg said a referendum would take place if there was a new treaty.
Exclusive: CBI chair warns over EU referendum
Centrica's boss warns an EU referendum risks "total destabilisation" for businesses; the Next chief suggests that view is "scaremongering."
PM's EU speech: Even 'best' friends think you are wrong
There will be sympathy, yes. But will they agree with him? No.
MPs 'tap dance on their eyelashes' for EU reform
Conservative MPs said their "achievable" proposals to change Britain's role in Europe do not represent an ultimatum to the Prime Minister.