Ulez: Expansion has improved air quality says City Hall report - BBC.com
- Ulez: Expansion has improved air quality says City Hall report BBC.com
- Ulez expansion led to significant drop in air pollutants in London, report finds The Guardian
- Breath of fresh air: Ulez expansion cut pollution 'better than expected' Evening Standard
- Sadiq Khan gloats as Ulez causes pollution levels to drop in London - ‘Working better than expected!’ GB News
- Expanded Ulez has improved air quality - City Hall BBC