Protesters clash with police in central London

Aerial footage shows protesters gathering in central London, despite police warnings to avoid demonstrations.

Various groups from around the country, including right-wing activists, said they had come to London to protect symbols of British history.

A Black Lives Matter demonstration planned for Saturday was brought forward by a day over fears there could be clashes with far-right groups.

Organisers urged people not to join any anti-racism rallies planned for the weekend.