Greta Thunberg appears in London at the start of the trial. The 21-year-old arrived at Westminster Magistrates' Court this morning.

Together with other activists, she demonstrated in front of a hotel in mid-October against a meeting of energy managers. If convicted, she could face a fine. Today some climate activists protested in front. of the court. dpa Did Greta ThUNberg disrupt public order at a demonstration? A court will decide on this.