It's not ok to block pavements.i don't think anyone on here has an issue with that. What I'm saying is, it's better to half park on pavement providing there's ample room for a mobility scooter or a double child buggy, that way it would also leave room for an emergency vehicle to pass on the road. Consider everyone and it works fine. It's those who either totally block pavement or totally block the road who need to stop it.
Your point about London is not applicable to other towns and cities that don't have the Tube. In my city the bus is often slower than driving because no dedicated bus lanes and loads of stops. 2 changes and 1 hour versus 25 mins in the car, is not enough incentive, when you'd need a car for other things anyway, you might as well take it