It's not the will of the people at all and never has been

TLDR version : the result was far too narrow. Minimum levels for the turnout and majority should have been set.

There have been at least 13 polls since June 23rd which have asked questions similar to ‘Would you vote the same again’ or ‘Was the country right to vote for Brexit’. Eleven of these polls indicate that the majority in the UK do not want Brexit. The poll predictions leading up to the referendum narrowed but a significant majority of late polls indicated that the country wanted to remain. The leader of UKIP even conceded defeat on the night of the vote, presumably because the final polls were convincing that Remain would win.

By March 2017 when Article 50 is due to be initiated, there will be approximately 563,000 new 18-year-old voters, with approximately a similar number of deaths, the vast majority (83 percent) amongst those over 65. Assuming those who voted stick with their decision and based on the age profile of the referendum result, that, alone, year on year adds more to the Remain majority. A Financial Times model indicated that simply based on that demographic profile, by 2021 the result would be reversed and that will be the case for the foreseeable future.

In the second group, members of the Commonwealth (and Eire) who were resident in the UK were able to vote but other members of the EU resident in the UK were not able to vote. All EU residents of Scotland were eligible to vote in the Scottish Referendum but not in the Brexit Referendum. Clearly, if democracy is regarded as allowing those most affected by a decision to have a say in that decision, then this has not happened.  With 2.9 million EU residents in the UK, it is likely that the majority would have voted for Remain and that too is likely to have reversed the decision

http://blogs.lse.ac.uk/brexit/2016/10/24/brexit-is-not-the-will-of-the-british-people-it-never-has-been/