The decision about the UK’s membership of the European Union is being put to a referendum vote on 23rd June 2016. This is not a normal election as the electorate is voting on a single issue and not for a political party. You need to be 18 to vote in the referendum but you need to make sure you are registered to vote by the deadline of 7th June. You can register to vote aged 17.

http://www.aboutmyvote.co.uk/register-to-vote

http://www.aboutmyvote.co.uk/upcoming-elections-and-referendums/eu-referendum