London Mayor Sadiq Khan has promised to pedestrianise Oxford Street by 2020 in a bid to improve air quality in the capital.

Oxford Street stands as one of London’s most polluted roads, with more than 4 million people passing through each week, despite the road being closed to cars from 7am – 7pm every day except for Sundays.

City Hall has proposed the pedestrianisation of the 1.2 mile street be rolled out in two phrases to coincide with the opening of London crossrail – the first from the eastern section from Oxford Circus. The second stage will see the road closed to all traffic, including buses and taxis from Tottenham Court Road to Marble Arch.

Cllr Jason Williams, Labour's shadow cabinet member for city management and sustainability in Westminster said: ‘While we believe there could be benefits from plans to pedestrianise Oxford Street, it is vital this is done in conjunction with a review of bus routes so as not to move traffic and pollution onto residential streets north and south of Oxford Street. Real consultation with local residents needs to be an integral part of any plans to pedestrianise Oxford Street.’