Climate change activists have staged a 'die-in' to highlight Norwich's illegal levels of air pollution.
Dozens of Extinction Rebellion protestors demonstrated against plans to develop Anglia Square, which include a new 1500 space car park.
The developers say it would regenerate the area - and the council insists it's working to improve air quality - but campaigners say more must be done.
Campaigners have called for immediate action, including extending a ban on idling vehicles, which currently only applies on Castle Meadow.
They also want greater investment in public transport and a revision of planning policies to ensure that new developments will not contribute to air pollution.
The Green Party says it's planning Norwich's first 'Car Free Day' on September 22 - but the city council has refused to officially close any roads.