David Cameron has travelled to Brussels hoping to persuade other European leaders to back his plan for reforming Britain's relationship with the other 27 EU countries. It comes ahead of a referendum in which voters in Britain will decide to stay or leave the EU. That vote is expected to happen some time next year.
So what are the benefits of staying or leaving?
UKIP's Suzanne Evans and Labour MP Alan Johnson have set out their opposing views for the Victoria Derbyshire programme.
Ms Evans believes it's time for the UK to leave Europe.
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