Let me put this another way. If I got given a very well paid civil service job, I would end up paying a lot of tax in return. And if someone paid for my house to be renovated and build the best utility and transport connections, then the value of it would go up.

And if mass media continued to promote my area continually then the value of my home would also go up. I would get given higher wages to cope with the increased cost of living there. We would get more tourists visiting my area, and firms and non-doms would set up there because of the positive image.

Much like London.

You’re only explaining potential reasons why London is generating higher value.

Which is still implicitly accepting the fact that London does create more value that then goes to the rest of the UK rather than the reverse.