Four men have been arrested on suspicion of aggravated trespass this morning.
They were arrested by police after climbing down from a chimney at West Burton power station.
Police say ten people are still 300ft up one of the chimneys where they have been protesting.
On Monday a group of around 30 people gained access to the power station in Nottinghamshire and climbed 300ft tall chimneys to protest against the use of fossil fuels.
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Janet Ajao said in a statement: "I do not condone his actions nor support the beliefs he held that led to him committing this atrocity."
Sonia Bryce played 'Shape of You' at top volume and cause a "wholly unacceptable level of disturbance" according to a judge.
They will be joined by Duke Dumont and Disciples at this year's festival in Staffordshire.