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

Find a car with the experts

Skip advert
Advertisement

Recommended

Mazda's carbon-capture technology could save the combustion engine
Mazda Vision X-Coupe concept

Mazda's carbon-capture technology could save the combustion engine

Could clever tech that removes carbon from exhaust gases before it leaves the tailpipe solve the CO2 problem?
News
29 Oct 2025
Suzuki Fronx FFV concept previews brand's “happy future”
Suzuki Fronx FFV Concept

Suzuki Fronx FFV concept previews brand's “happy future”

EVs aren’t the only answer to a greener future, according to Suzuki
News
28 Oct 2025
New BMW iX5 Hydrogen confirmed: German brand bets big on green future fuel
BMW X5 - front 3/4 nurburgring

New BMW iX5 Hydrogen confirmed: German brand bets big on green future fuel

BMW will sell its first series production hydrogen car from 2028. 
News
21 Sep 2025
A new breed of EVs? EU paves the way for small, affordable electric cars
Dacia Spring vs Leapmotor T03 - head to head static

A new breed of EVs? EU paves the way for small, affordable electric cars

The new Small Affordable Car initiative would lower electric car prices and make them more accessible to more buyers
News
11 Sep 2025

Most Popular

Chery Tiggo 8 wins Carwow Car of the Year 2026 thanks to its outstanding value
Chery Tiggo 8 - Mat Watson

Chery Tiggo 8 wins Carwow Car of the Year 2026 thanks to its outstanding value

The seven-seater family SUV also won Carwow’s Hybrid Hero award
News
20 Nov 2025
AA and BSM driving schools under investigation over £3 booking fee

AA and BSM driving schools under investigation over £3 booking fee

The Competition and Markets Authority is looking at how the companies present mandatory fees to customers
News
18 Nov 2025
Stop comparing EV charging times to petrol fill-ups, they're already quick enough
Opinion - EV charging times

Stop comparing EV charging times to petrol fill-ups, they're already quick enough

Paul Barker thinks the EV industry should focus more on efficiency and less on charging times
Opinion
19 Nov 2025