Union Jacks and St George flags have been put up along long stretches of Dereham Road as well as nearby parts of the inner ring road at Grapes Hill, Barn Road and Barrack Street.

Footage shared online shows people using a large ladder to erect the banners, which were connected to the lampposts about 15ft high.

The group of about 20 to 30 people were heard shouting and chanting between 7pm and 10pm on Tuesday night, with loud motorbikes revving engines and passing cars beeping their horns in support.

A man climbs up a ladder to attach a flag to a lamppost in Dereham Road (Image: Instagram)

Some of the flags were put up outside Norwich Central Mosque, on Dereham Road, in what neighbours have claimed was an "act of intimidation".

Locals called the police to report the activity.

A spokesman for Norfolk Constabulary said officers were sent to Dereham Road on two occasions to respond to reports of "group of people shouting and behaving aggressively".

However, officers took no action and the group were allowed to continue further down the street towards the inner ring road, continuing to chant and erect more flags.

Two flags blow in the wind attached to a lamppost outside a mosque in Dereham Road, Norwich (Image: Newsquest)

In videos shared by the group putting up the flags, neighbours can be seen being shouted at as they went out their front doors to investigate the commotion.

Racist language can also be heard being used by members of the group, as well as shouts of "whose streets, our streets", "Keir Starmer is a w****r" and "you can't........

© Eastern Daily Press