A UK in decline needs to rediscover supply-side economics

I just spent two weeks in a broken Britain, which is an unfortunately apt description for a country that has fallen from its former glory. Its people are funny, witty, creative, intelligent, sports-mad and educated, part of a society that has constantly evolved over the last millennium, its imperial heritage bringing in cultures from around the globe. It is a green and pleasant land, beautiful in spring and summer, and not too bad in the autumn.
Yet the once great nation is now dealing with a...