[dave2000]

" Do you think the urban sprawl around london (known as greater london) would exist if people weren't forced to commute into London everyday?"

London exists as it does today for historical factors, such as importing, manufacture etc. Only recently has it been possible for more than a tiny fraction of the population to work remotely, and even today that proportion is so low it would make no difference overall.

[notmything]

cultural change required. London is busy and expensive because people need to be there, if they didn't it wouldn't be!