What The Key Figures Are Saying
As the starting gun is fired on the in/out referendum campaign to decide on Britain's membership of the EU, key players have been giving their reaction.
:: Prime Minister David Cameron - "I believe that Britain will be safer, stronger and better off in a reformed European Union."
:: Labour leader Jeremy Corbyn - "We will be campaigning to keep Britain in Europe in the coming referendum, regardless of David Cameron's tinkering, because it brings investment, jobs and protection for British workers and consumers."
: Justice Secretary Michael Gove - "This chance may never come again in our lifetimes, which is why I will be true to my principles and take the opportunity this referendum provides to leave an EU mired in the past and embrace a better future."
: Home Secretary Theresa May - "For reasons of security, protection against crime and terrorism, trade with Europe, and access to markets around the world - it is in the national interest to remain a member of the European Union."
: Commons leader and Brexit campaigner Chris Grayling - "I think I had reached the view some time ago that I was almost certainly going to vote for out."
: Former Labour cabinet minister and member of Britain Stronger in Europe Ben Bradshaw - "The big picture is do we want to stay in the European Union for our prosperity, for our security, for our influence in the world, or do we want to take a leap into the unknown."
: Eurosceptic Conservative MP Sir William Cash - "This is a spin operation at the moment on very flimsy and insubstantial grounds and when the people who are looking at these things properly have a chance to evaluate it they will see that this is the emperor with hardly any clothes on."
: UKIP MP Douglas Carswell - "Wouldn't it be amazing if our children and grandchildren could celebrate 23 June as the day we retook our independence as a country."