Re: London Falling
This was an advisory referendum only, with no force of law. The United Kingdom is not obligated to leave the EU.
Yes, a pro-separation change in government will soon take place. However, the more forcefully that the new government pushes for a full departure, the more forcefully Scotland and Northern Ireland will attempt to disentangle themselves from the United Kingdom.
Northern Ireland in particular might see a real increase in sectarian violence if EU separation is not handled with great care, so internal security and continental policy will become even deeper-entwined. These forces will certainly blunt immediate impulses towards separation.
The EU bureaucracy has allowed a large, hostile contingent to form in several European nations. Perhaps now an inward gaze, compelled by credible criticism, can form a more perfect union.