Hm. Maybe it's just from having grown up here but to me those cities are very different places — each with a dozen neighborhoods of their own. And they range from "urban" through suburban, to isolated neighborhoods. Especially when you want to consider them in terms of stores, crime rates, foot traffic etc.
Sure, but to stick with the London example, Canary Wharf, Chelsea, Westminster, Ealing and Croydon are all very different places with differing densities, land uses, socioeconomic makeup, etc.
