Traffic delays in London were significantly worsened by ongoing roadworks, particularly at the M25 Wisley interchange.

Globally, London was the fifth most congested city, with Istanbul leading the list.

The congestion rankings are based on the duration of delays, adjusted for the population size of each city.

Manchester saw a notable 13% rise in congestion, with delays increasing from 54 hours to 61 hours per driver.

The A40 Westway emerged as the most congested road in the UK, especially during the peak hour between 5pm and 6pm.

Inrix's congestion analysis utilized a variety of data sources, including mobile phones and vehicles, to assess traffic conditions.

In 2024, London retained its title as the most congested city in Europe, with drivers enduring an average of 101 hours in traffic, marking a 2% increase from the previous year.

Following London, Bristol and Leeds ranked as the next most congested cities in the UK, with drivers facing 65 and 60 hours of delays respectively.

Transport for London is actively working to enhance transport efficiency and sustainability by investing in walking, cycling, and public transport initiatives.

London's traffic congestion issues have historical roots, with references to traffic problems dating back to the 17th century and significant plans for a mega motorway in the 1960s being halted due to public opposition.

The estimated cost of congestion in London reached approximately £3.85 billion in 2024, averaging £942 per driver among the city's 4 million motorists.

Inrix attributes London's severe congestion to its high population density, coupled with substantial employment and economic activity.