Greenpeace has been declined charity status - and the tax-free benefits that go with that.
The independent Charities Registration Board says the organisation does not exclusively advance charitable purposes, bur rather promotes its own particular views about the environment and other issues.
Greenpeace has 20 working days to appeal the board's decision to the High Court.
It has won a similar battle in the past.
In 2014, the Supreme Court ruled in favour of Greenpeace after it was refused charitable status by the now defunct Charities Commission.
