Ultra Low Emission Zone

Ultra Low Emission Zone
	The combined Low Emission Zone and Ultra Low Emission Zone symbol seen on road signs
Location	Greater London
Launched	8 April 2019
Technology	Fixed and mobile CCTV; Number plate recognition;
Operator	Capita
Manager	Transport for London
Currency	Pound sterling
Retailed	Online; Telephone; Post;
Website	tfl.gov.uk/modes/driving/ultra-low-emission-zone

Boundary of the ULEZ
From 2023
2021–2023
Congestion zone

The Ultra Low Emission Zone (ULEZ) is an area in London, England, where an emissions standard based charge is applied to non-compliant road vehicles. Plans were announced by London Mayor Boris Johnson in 2015 for the zone to come into operation in 2020. Sadiq Khan, the subsequent mayor, introduced the zone early in 2019. The zone initially covered Central London, the same area as the existing London congestion charge; in 2021, Khan extended the zone to cover the area within the North Circular and South Circular roads. In 2023 it was further extended to all of Greater London, covering over 1,500 square kilometres (580 sq mi) and approximately 9 million people.

The zone has reduced the number of non-compliant cars on the road and has averted an amount of toxic air pollution equivalent to that emitted by London's airports combined^{[citation needed]}. The zone raised £224 million in 2022.

Although planned and developed across different governing London political parties, the ULEZ has become politicised, with criticisms regarding its effectiveness and value reported on.