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

UK gets 1,000 new electric car chargers with multi-million pound investment
RAW Charging points with an Audi

UK gets 1,000 new electric car chargers with multi-million pound investment

Plans to install 1,000 chargers over 28 retail sites is being billed as “major step forward” for EV charging infrastructure
News
16 Mar 2026
The death of the Honda 0 Series is heartbreaking, but what it signals is even worse
Jordan Honda opinion

The death of the Honda 0 Series is heartbreaking, but what it signals is even worse

One of the most exciting new car projects in the last 50 years is dead, but it wasn’t really Honda that killed it…
Opinion
16 Mar 2026
Rejected! Government says no to calls for early review of EV sales targets
Electric car charging mega test - charging overhead

Rejected! Government says no to calls for early review of EV sales targets

Car makers say the UK’s EV targets were too ambitious but the government will not bring forward its review
News
12 Mar 2026
What are the Euro 7 emissions standards?
Diesel exhaust smoke

What are the Euro 7 emissions standards?

Euro 7 is big news for the car industry and is more relevant for drivers than you might think…
Tips & advice
25 Feb 2026

Most Popular

New BMW iX3 gets cheaper with ‘40’ trim added, and it’ll still go 395 miles
BMW iX3 40 - front tracking

New BMW iX3 gets cheaper with ‘40’ trim added, and it’ll still go 395 miles

The new entry-level iX3 has been revealed, and it’ll still do 395 miles of range
News
31 Mar 2026
New Renault Twingo 2026 review: a brilliant electric city car
Jordan Katsianis with the Renault Twingo

New Renault Twingo 2026 review: a brilliant electric city car

The new Renault Twingo EV is clever, good-looking and a delight to drive
Road tests
31 Mar 2026
New Jaguar GT prototype review: big promise, but not the finished article… yet
Richard Ingram with the Jaguar GT prototype

New Jaguar GT prototype review: big promise, but not the finished article… yet

We hit the tarmac to try out the new Jaguar GT and although the early signs are good, there's still some fine tuning to be done
Road tests
31 Mar 2026

Find a car with the experts