Well, I also live in the Mission next to Valencia, where it is ludicrously easy to catch a cab, though I appreciate that it's impossible to catch them in, e.g., Sunset, so I didn't mention it as an advantage.
Of course, in London you literally can't catch a black cab outside of the center (they're not even allowed to do so past a certain radius) so you have to call a minicab. So SF still wins.
Of course, in London you literally can't catch a black cab outside of the center (they're not even allowed to do so past a certain radius) so you have to call a minicab. So SF still wins.