They also raised concerns about the treatment of hunger strikers in detention, citing delayed medical care, excessive restraints during hospitalization, denial of family and legal contact and insufficient independent medical oversight.
Labour Party lawmaker John McDonnell said the hunger strikers have also secured meetings with prison officials about their health and conditions, following the news.
“I pay tribute to the dedication of the hunger strikers,” he said on the US social media company X.
Palestine Action was banned in July under the Terrorism Act after members of the group entered a Royal Air Force base and spray painted two aircraft, causing £7 million ($9.44 million) in damage, according to police. Hundreds of pro-Palestine activists have since been arrested across the UK.