Huda Ammori, a co-founder of the activist group Palestine Action, has been granted permission to challenge the Home Office's decision to ban the organization as a terrorist group. The Supreme Court will hear her appeal.

The development comes on the same day that 77 supporters of Palestine Action were arrested outside Westminster Magistrates' Court. The arrests were made by Metropolitan Police officers for openly expressing support for the banned group.

The Court of Appeal had previously ruled in June that the ban, enacted last year under the Terrorism Act 2000, was lawful. This decision overturned a High Court ruling from February that sought to quash the ban.

Ammori is arguing before the Supreme Court that the former Home Secretary, Yvette Cooper, incorrectly applied her own policy and that the ban infringes upon freedom of speech and association. The Supreme Court justices granted permission for the appeal based on the grounds of incorrect policy application, but denied it for the freedom of speech and association arguments.

A hearing for the appeal is anticipated to take place between October 1 and December 21.

Meanwhile, nearly 2,000 individuals had been summoned to appear at Westminster Magistrates' Court on Thursday, with daily court listings showing 1,855 charged with carrying a placard in Parliament Square in support of Palestine Action. Many of those charged are reportedly in their 60s and 70s. Their cases have been adjourned until October 26, pending the outcome of the appeal against the group's proscription.

Hundreds of protesters associated with the activist group Defend Our Juries attended court to show solidarity. The Metropolitan Police stated on X that expressing support for proscribed organizations is a criminal offense and that arrests would be made.

Among those arrested was environmentalist Sir Jonathon Porritt. Deputy Assistant Commissioner Andy Valentine emphasized that the law is clear regarding support for proscribed organizations and stated that such actions have a detrimental impact on the public, court staff, and local residents. He noted the arrests were particularly nonsensical as no Palestine Action hearings were scheduled for that day.

Since Palestine Action was banned, more than 2,700 arrests have been made under the Terrorism Act 2000.