Three planes an hour for three hours

There is a temptation, and a duty, and even Occam's razor to consider that events such as this are likely to have been staged by the security forces or by politicians to accrue greater power to themselves.

But in this case I don't believe the British government would be so stupid. The patience of the British public is not infinite. The British Civil Service fetishizes stability above nearly all other virtues, and the possibility of widespread BNP violence can't be ruled out.