The referendum vote in the UK as whether Britain should exit the EU is to be held on 23 June. Interestingly, the referendum is only advisory, not compulsory however, UK politicians are likely to abide by the will of the people and, if the vote is to leave, eventually pass laws to exit. This would not actually take place until at least 2020, giving Britain plenty of time to negotiate and clear up some of the most important uncertainties about the wider impact.