The result is indeed valid and it is a majority, but a very small one to enact such a significant and long lasting change and even Farage said a few months ago a 52-48 vote would be 'unfinished business' and he'd call for a second referendum. Obviously it's worked the other way in his favour, but I still think the Remain side has a right to be unhappy if such a small majority decides our EU membership, and if the roles were reversed and we were talking about a narrow Remain victory, Brexiters would be just as pissed and would be rejecting the legitimacy of the result, so I for once agree with Farage that such a narrow result is indeed 'unfinished business'.