Campaigners tell attorney general that proceeding with trials before judicial review raises legal and moral questions

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Protesters arrested for supporting Palestine Action should not be prosecuted until a legal challenge to a ban on the group has been heard, organisations including Greenpeace and Human Rights Watch have told the attorney general for England and Wales.

In a letter to Richard Hermer KC, also signed by Friends of the Earth, Global Witness and the Quakers, they say proceeding with charges or trials before the judicial review, which is expected to be heard in November, would raise significant legal and moral questions.

Last weekend 522 people – half of whom were over 60 – were arrested under section 13 of the Terrorism Act at a demonstration in Parliament Square for carrying placards that stated: “I oppose genocide, I support Palestine Action.”