[esotericn]

Having a few urban centres makes sense.

The UK is already fairly urbanized. Basically everyone lives in or around a city. You could densify the cities if the residents actually want that.

What's being discussed here is not that though, it's the problem that everyone seems to want to go to alpha cities like London/SF/NYC and treats elsewhere as "inferior".

You can't just stuff the entire population of the UK in to London because it would be a hellscape regardless of how much you improve infrastructure.