https://www.theregister.co.uk/2019/09/12/activists_drones_heathrow/

Five people have been arrested by the Metropolitan Police for threatening to fly drones around London’s Heathrow airport this Friday to protest climate change.

The group announced at the end of August that they were planning to disrupt the airport – one of the world’s busiest – this coming Friday and would meet with the police and airport authorities to discuss their plan. On Tuesday, they reiterated that plan, stating that they were prepared to go to jail to carry out the action.