London police reported that 139 people had been arrested at a Palestine Action demonstration, with arrests continuing, as co-founder Huda Ammori’s challenge to the group’s proscription heads to the Supreme Court next week.
The Metropolitan Police said on Oct. 31 that 139 people had been arrested outside the U.S. Embassy in London and officers were still making arrests. An earlier update listed 48 arrests, most for expressing support for a proscribed organization. The 139 figure was a running count, not a final total.
Defend Our Juries, which organized the demonstration, said the event pushed its nationwide tally of arrests under the Terrorism Act for defying the ban past 4,000. That is the group’s count of arrests, rather than a verified number of distinct individuals. EconoTimes previously covered the start of arrests at the protest.
The Supreme Court lists Ammori’s appeal for Nov. 4–5. Her case asks whether the Home Secretary acted lawfully in using the government’s policy to proscribe Palestine Action. The court allowed an appeal on that policy question but refused permission to pursue a separate human rights ground.
The High Court ruled the proscription unlawful in February 2026, but the Court of Appeal reversed that decision in June. The ban took effect July 5, 2025, under the Terrorism Act 2000. The Home Office said offenses include joining the group, soliciting support for it or recklessly voicing support, and can carry prison sentences of up to 14 years.
Before the demonstration, the Metropolitan Police said staffing the event could leave fewer resources for policing in local areas. Commander Adam Slonecki said the operation would focus on criminal conduct rather than the expression of views. The Supreme Court hearing is scheduled for Nov. 4–5.

