Coming soon: the £24 charge for driving into central London

London’s ultra-low emission zone launches in April. It will cut pollution, but some argue it could price motorists off the roads
•ULEZ: what you need to know
•Is the zone a good or a bad idea?This April will see the start of what the London mayor, Sadiq Khan, proclaims will be the toughest emissions standards for vehicles in any world city. Will it be a historic turning point in the battle against filthy air in our cities – or will it prompt “yellow vest” style