Tamara Spark starts on 10 November as director of comms. She previously headed Greenpeace's forests campaign in China and has worked at the NGO for 15 years. Before this she was a journalist.
She replaces Ben Stewart, who reverts back to his title of head of media. Stewart, who spoke to PRWeek from an island off the shore of Kingsnorth Power Station, called his role change 'a welcome demotion'.
The group received mass coverage last week after its high profile protest ship the Rainbow Warrior sailed to Kingsnorth in protest against a new coal-fired power station being built at the site.
Last month, Stewart was cleared of causing £30,000 of criminal damage to Kingsnorth Power Station, when he and five others scaled the chimney and painted 'Gordon Bin It' down the side. The Independent said: 'Jury decides that threat of global warming justifies breaking the law.'