Police have ordered climate change protesters in London to stop their action immediately or face arrest in an effort to put an end to more than a week's disruption in the capital.
Activists with Extinction Rebellion (XR) have been told to leave Trafalgar Square.
Many had congregated there lawfully since October 7.
Scotland Yard said activists were told to cease their protests by 9pm on October 15 or face arrest.
More than 1,400 people have been arrested during eight days' XR action, with the threat that anyone defying police orders will also be detained.