Firstly, it finally, re-emphasises the primacy of the Legislature and the people over the Executive. For too long, and certainly since Blair, this country has not been ruled by Parliament but by a form of 'kitchen table' or 'sofa' cabinet, where decisions were made by a few individuals, advised by unelected and unaccountable SpADs who could peddle their own ideas and agendas, and which were then presented to the Legislature to be rubber stamped. That is not the action of an effective democracy. Last night's vote was a move against that trend and potentially the first steps to the re-establishment of Parliamentary rather than Cabinet government.
It could have something to do with our fine unwritten constitution, which has the effect of making the prime minister de facto president and gives our commander-in-chief all the power to declare a new community centre open.