Skip advert
Advertisement

London ULEZ expansion fails to lower emissions

Official data suggests the expansion of the ultra-low emission zone to the entirety of inner London has had no impact on emissions

Smoking exhaust

The expansion of the London ULEZ (ultra-low emission zone) has failed to accelerate the reduction of harmful pollutants in the capital, new official data shows.

Between January and March 2021 - before the ULEZ was expanded to cover the entirety of inner London within the north and south circular roads - nitrogen dioxide emissions were 56 per cent lower in central London than Transport for London’s official estimate of emissions if ULEZ hadn’t been introduced. Those same nitrogen dioxide emissions were 21 per cent lower in the rest of inner London.

From January to March 2022, after the ULEZ expansion, those figures have fallen to 44 per cent and 20 per cent below the estimate for central London and the rest of inner london respectively. 

Advertisement - Article continues below

Due to external factors like fuel shortages, Covid lockdowns and the cost of living crisis impacting on car use and emissions, TfL said it was “difficult to definitively attribute changes in emissions and concentrations to the impacts of the ULEZ”.

Nevertheless, Mayor of London Sadiq Khan intends to expand the £12.50 charging zone out to all of Greater London within the M25 in August 2023, at a cost of £300 million.

The news led to Conservative politicians, including MPs with London constituencies, questioning whether further expansion of ULEZ would be worthwhile.

Prime Minister Boris Johnson, meanwhile, said: “Another tax on families and businesses and white vans and the rest of it is going to hit people just when we’re trying to put more money into their pocket.”

Looking to sell your current car quickly and for a good price? We’ve partnered with Motorway to bring you the best offer from its network of UK dealers...

Skip advert
Advertisement
Skip advert
Advertisement

Recommended

What is hypermiling and how do you do it?
Whisky fuel feature - Martin filling up

What is hypermiling and how do you do it?

Hypermiling helps you get the most from every last drop of fuel to maximise MPG. We explain how it works, and how it can save you money…
Tips & advice
25 Jun 2026
UK 2030 petrol and diesel sales ban: what is it and what cars are affected?
fuel pump

UK 2030 petrol and diesel sales ban: what is it and what cars are affected?

The ban on the sale of new petrol and diesel cars is set to be introduced in 2030, we explain what it means for you and your motor
Tips & advice
18 Jun 2026
Battery repair black hole is putting the future of EVs under threat
Technician working on EV batteries

Battery repair black hole is putting the future of EVs under threat

Experts call for end to culture of replace rather than repair amid concerns over second-hand cars
News
13 May 2026
Our EV obsession is holding back green mobility, efficient hybrids are the answer
Toyota Prius - cornering left

Our EV obsession is holding back green mobility, efficient hybrids are the answer

The call for more flexibility and a wider eco focus than the single path to electric is growing
News
12 May 2026

Most Popular

New Polestar 2 on the way: More range, better tech and a saloon transformation
Polestar 2 - exclusive image

New Polestar 2 on the way: More range, better tech and a saloon transformation

The new Polestar 2 is set to morph into a sporty saloon, and our exclusive image previews how it could look
News
6 Jul 2026
Car Deal of the Day: Skoda Octavia Estate is a cavernous family car for £210 a month
Skoda Octavia Estate vRS - front cornering

Car Deal of the Day: Skoda Octavia Estate is a cavernous family car for £210 a month

Not many cars tick all the boxes, but the Skoda Octavia Estate is one of those. It’s our Deal of the Day for 3 July.
News
3 Jul 2026
The UK's first Chinese car UK brand casualty? Skywell is looking at the exit
Skywell BE11 - front cornering

The UK's first Chinese car UK brand casualty? Skywell is looking at the exit

Skywell sold a grand total of 31 cars in the UK last year and its importer, Innovation Automotive, has now shut down
News
6 Jul 2026

Find a car with the experts