Climate activists planning to disrupt Heathrow Airport with drones have been arrested the day before their stunt.
Police said they will arrest protesters from Heathrow Pause if they fly the drones illegally near the airport on Friday.
But at least four people have been detained today, including Roger Hallam, who co-founded Extinction Rebellion.
He and another activist were handcuffed at a café in Bethnal Green, where the pair had been giving an interview to journalists.
They were taken away in separate cars, a Heathrow Pause spokesperson said.
The group says its media officer, who had not stated any intention to fly a drone, has also been arrested, while other members’ homes have been cordoned off.
The group called the incident a ‘preemptive arrest’, before tweeting: ‘This is to activists, rebels and ordinary people everywhere. Please stand with us. We all have to rise up.
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Police yesterday branded the planned protest a ‘deliberate and criminal’ attack on UK infrastructure.
Deputy Assistant Commissioner Laurence Taylor suggested the stunt risked attracting ‘would-be terrorists’ as well as serious safety concerns and disruption.
He added: ‘As a result we’ve had to put a significant policing plan in place that drains resources from across the Metropolitan Police.’
Heathrow Pause met with police on Tuesday to discuss their plans for Heathrow.
The activists said they were ‘utterly committed to the principles of non-violence, transparency and accountability and to cooperating with the police as far as is possible’.
Hallam said at the time: ‘I’ll be flying a drone at head height, some distance from Heathrow. It’ll be 100 per cent safe and 100 percent illegal.’