Introduced to protect people's health, following evidence of increases in asthma and other respiratory problems. https://tfl.gov.uk/modes/driving/ult...y-we-have-ulez. Basically the same motivation as banning smoking in public buildings, which I also support; and nothing to do with climate change.
I don't know about you, but the idea of getting all my daily needs within 15 minutes' travel time on foot or by bicycle, without having to worry about rat-running traffic, seems rather attractive.
I'm with you on this one: EV's definitely aren't the answer to climate change. The correct answer is reducing the need to travel by any means more powerful than an e-bike; for example by creating more 15-minute neighbourhoods.
Looks like they have only gone for half-measures in Blackburn, rather than going the whole hog as in many Dutch cities; there, they have made it virtually impossible to drive from A to B within the cities, not by disrepair, but by road closures that only allow cycles and buses through. Result: peaceful, safe streets, with shops doing good business because everyone is going slowly enough to look into shop windows.