London's Metropolitan ​Police said in a post on ​X that people were arrested for ⁠showing support for a "proscribed organization".

The gathering was ​the first since London's High Court ruled ​in February that a ban designating the pro-Palestinian group as a terrorist organization was unlawful. UK Interior ​Minister Shabana Mahmood has been granted approval ​to appeal the ruling, Reuters reported.

Lawmakers banned Palestine Action -- which accuses ‌Britain's ⁠government of complicity in what it says are Israeli war crimes in Gaza -- under anti-terrorism legislation last July after some ​members broke ​into a Royal ⁠Air Force base.

During Saturday's demonstration, placard-holding ​protesters, ⁠some wearing black and white Palestinian scarves and waving Palestinian flags, sat on the ⁠ground ​or on camping chairs.