Britain's Court of Appeal has ruled that the government's ban on the activist group Palestine Action is lawful, upholding the organization's designation as a proscribed terrorist group.

The ruling came after the Home Office challenged a previous High Court decision that would have quashed the group's proscription. The Court of Appeal's decision reverses the lower court's ruling and maintains the ban that was originally imposed by the government.

Palestine Action has been involved in direct action campaigns targeting what it considers Israeli interests in the UK. The group's activities have included protests and actions against arms manufacturers and other entities it claims are connected to Israeli military operations.

The proscription means Palestine Action is legally classified as a terrorist organization under UK law, making membership or support of the group a criminal offense. Organizations on the proscribed list are subject to asset freezing and other legal restrictions.

The case highlights ongoing tensions around activism related to the Israeli-Palestinian conflict and the government's use of terrorism legislation to address protest movements. The Court of Appeal's decision represents a significant legal victory for the Home Office in maintaining its authority to designate groups as terrorist organizations.