More than 20 people have been arrested during a protest in London in support of Palestine Action, a group which has been banned under UK anti-terrorism laws.

Pro-Palestinian campaign group Palestine Action's co-founder on Friday lost a bid to pause the British government's decision to ban the group under anti-terrorism laws, with the group losing an urgent appeal meaning it will be banned from midnight.

Metropolitan Police arrested at least 27 protesters who gathered in central London on Saturday to publicly support Palestine Action, a nonviolent direct action group now officially designated a terrorist organization by the U.K. government.