London’s Mayor Sadiq Khan has spoken with the Leader about his proposal to replace the congestion charge and ultra-low emission zones in the city with a pay-per-mile system instead.
He told us some form of smart road user charging system is 'inevitable' as London aims to cut pollution and congestion.
Other proposals include an extension of the ULEZ to cover the whole of London, and charging drivers of vehicles registered outside London for entering the capital.
In this interview, Sadiq explains why he’s looking at these options, how it can be affordable, and why he’s planning such extensive action to tackle air pollution.