I have never lived in London, but even visiting with a car is a complete PITA.. Nowhere to park for starters, and extortionate prices if you do find a space. Spend all day stuck in traffic.
If I lived in London I wouldn't consider having a car, but they have viable alternatives in the form of a 24 hour public transport system, and having everything you might need within a few miles radius.
and that second bit is kind of the point, we have removed many viable alternatives and catered almost exclusively to the car with, from what I can see, no real long term plan to deal with the consequences. The car is so embedded in our society and psyche that even the most obvious has to be spelled out and even then it doesn't meet with agreement. For example the idea of imposing congestion and pollution on others by commuting and the two dominant views in response:-
tough - if you want to get away from the congestion/pollution then earn it otherwise put up and shut up
it's a shame - but we have to think of us/our children, prices have forced us out, we can't manage without a car, we love living in the country so a lengthy car commute is a price we're prepared to pay for this......and so on
Neither of these responses really considers the car itself to be the problem and most people somehow believe that it's possible for everyone to have their cake and eat it or simply do not care. The MSM constantly sides with the put upon motorist and fuels the injustice they feel. Even those that have woken to the realisation that the car imposes chains still find those chains very hard to shake. The gap between the freedoms we believe a car symbolises and the reality, well detailed by Illich, is huge.