At this point wouldn't it be cheaper to just move the capital to somewhere in the Midlands, and in so doing hitting two birds with one stone? I.e. decongesting London and giving (back) lots of economic opportunities to Midlands itself (which seems like it got the shortest of sticks as a result of Britain's des-industrialisation) and even to Northern England. And I'm not just talking about moving some BBC offices and stuff like that, I'm talking about moving the whole damn thing, i.e. the Government and even the Parliament.
Otherwise the entire island of Britain (or the English part of it, at least) would be geared towards its South-Eastern corner only, and there's only so much that you can alleviate that by infrastructure works.
replies(1):