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.

British police arrested more than 20 people in London on Saturday for allegedly supporting the newly banned group Palestine Action, just hours after the ban officially came into force. The arrests took place in Parliament Square,