This is what democracy is all about. 357 local MP's get to chose their leader for life or until they chose another one. Westminster parliamentary rules allow a billionaire to be named the ruler of one of the world's leading nuclear powers, by a cadre of party politicos. Of course he is only supreme leader for a couple of years before they will have an election that will likely lead to a minority parliament and a possible disintegration of the nation state, as Scotland and Northern Ireland demand more autonomy.
The BBC should do an educational video for all those non democratic governments that the British government are sanctioning for being undemocratic. They need lessons in the intricacies of what makes a democracy great enough to preach to the world about citizen rights.