Oxford Street will go traffic-free on Sunday 21st September to show the potential benefits of it being permanently pedestrianised.
Half a mile of the street will be pedestrianised from 12pm until 8pm for the This is Oxford Street event.
The event will bring together fashion, food, music, sport, music, heritage and community in one place.
The Mayor of London has plans to pedestrianise Oxford Street and supercharge regeneration in the area. A public consultation showed that seven in ten Londoners are in favour of regeneration and two thirds are pro pedestrianisation.