That's unevenly distributed. Lots of people in London do walk or use public transport, but you still need many delivery drivers, tradespeople, etc and it doesn't make sense for them all to live outside the city. And people who don't usually drive occasionally need to use a vehicle, and then it's more stressful because you aren't used to having to know where the vehicular entrances are. It's too simplistic to just make provision for the majority and assume that it doesn't matter what the second order effects are.

There is still pushback. I live in Toronto and when central businesses are canvassed about streetscape changes they overwhelmingly are against removing parking, access for cars, etc. They assume that 90% of their customers drive to them, but it turns out that it is closer to 10% for most of them.

My city has been making efforts to stymie traffic flow to encourage less driving. I almost never drive but it's still annoying as crap when what used to be a 20 min drive is now 40+ because of how slow the first/last mile is now.

When I'm not driving I do enjoy it, so I understand that it's a tradeoff and I can't have it both ways. That doesn't make me not irritated when behind the wheel though.

In the most central (and expensive) parts of London - “Zone 1”, where all the famous landmarks are - that is indeed a safe assumption.

But go to a less central area, like Hendon and you’re still very much within London, but every street is lined on both sides with parked cars.