Sadiq Khan has introduced an £11 million fund to help eight London boroughs implement new measures to improve air quality in their areas.
The funding from the Mayor of London aims to tackle toxic air quality and emissions in the capital, by creating five new Low Emission Neighbourhoods.
To be set up by 2019, the neighbourhoods will implement initiatives that provide penalties for the most polluting vehicles, reserve parking for the cleanest vehicles and introduce car-free days.