David Cameron says EU will have to be more flexible if it wants Britain to stay

British Prime Minister David Cameron says the European Union will have to become more flexible if it wants his country to stay in the 28-nation bloc.

Cameron has told an employers' organization he wants a looser, "more competitive" EU that gives greater protection to countries, including Britain, that don't use the euro currency.

Britain is holding a referendum by the end of 2017 on whether to remain in the bloc.

Cameron will publish his list of negotiating demands Tuesday in a letter to European Council President Donald Tusk. On Monday, he said he is seeking "a live-and-let-live Europe, a flexible Europe" that lets Britain remain outside of closer political and economic ties binding the eurozone countries.

Cameron said "we want to be in a common market, not a common country."