![A caravan parked near the home of London Mayor Sadiq Khan as protests mount over the introduction of the Ulez. PA](https://thenational-the-national-prod.cdn.arcpublishing.com/resizer/v2/633YEG7ZHSHSGEAGF3AYDUGPFU.jpg?smart=true&auth=2eb4ae79709266ba1300091db4768d8bafb7c815398fcfb6e645f6e1f5391131&width=400&height=225)
A caravan parked near the home of London Mayor Sadiq Khan as protests mount over the introduction of the Ulez. PA
A caravan parked near the home of London Mayor Sadiq Khan as protests mount over the introduction of the Ulez. PA
London's Mayor defends Ulez expansion as motorist backlash rages
As a sufferer of adult-onset asthma, Sadiq Khan has made the battle to tackle emissions a personal mission