What we are forgetting is that it was not Cameron who called the referendum in the first place. It was part of the Tory Manifesto of 2015, so it was their victory which caused the referendum to happen - this was based on the votes of 24.3% of the electorate and 36.7% of the votes cast. This means that 63.1% voted for parties not offering a referendum. So much for it all being the 'Will of the people'. With a PR system none of this would have happened. Only under our present system is it possible for a small group of desparadoes to get this far through infiltrating one of our biggest parties and holding the whole country to ransome. The same is true in the past - with PR we would have had no Iraq war, and Thatcher would not have been able to rip the heart out of British industry in the 80s. All of these were based on parties proclaiming majorities based on a minority of the votes cast - and in all cases we have a majority scratching their heads saying 'I didn't vote for this'. In all cases the majority of the people are actually against the government in power - so there can never be a case of 'The Will of the People' in the UK. We just have an alternating one party state, with very little counterbalancing because we are, in comparison to other EU countries, very centralized on the powers of Westminster. A repeat of what has happened in the UK. would be impossible in any other EU country because of their electoral systems. Whether we are in or out of the EU. or half in half out, the need is there to democratize our political system, and to decentralize away from Westminster - because this whole Brexit process, whatever the end result, has shown up the instabilities of British democracy.