The best known is the London ULEZ ... ultra-low emission zones – can barely keep up. There are restrictions planned for Aberdeen, Bath, Birmingham, Brighton, Bristol, Dundee, Edinburgh, Glasgow ...

It opens the door for reviews of other emissions-based zones across the country and whether they could achieve pollution targets without charging drivers.

The Met Police has received more than 500 reports of crimes relating to Ulez cameras since 1 April ... London Mayor Sadiq Khan's Ultra Low Emission Zone expanded across all of the capital's ...