London’s new Toxicity Charge (T-Charge) is already making a difference to air quality on the streets of the capital.
It will see a £10 fee apply to pre-2006 petrol and diesel vehicles when they drive into the existing Congestion Charge zone, bringing the total fare up to £21.50.
Mr Khan said: “Since we announced the T-Charge, the amount of the most polluting vehicles coming into the heart of London has fallen by 15% so we’re really seeing a change in behaviour and that’s what the T-Charge is about.
“This is about an investment in our air, it’s not about making a profit.”
He added he had also doubled the funding to improve London’s air by spending money on retrofitting buses, phasing out diesel taxis, investing in walking and cycling infrastructure and clearing up traffic around schools.