She was also a member of the Twentieth Century Task Force to Apprehend War Criminals, and a trustee of the Amazon Charitable Trust. She gave a reading at the start of the memorial service in London's Westminster Cathedral, which was timed to coincide with the funeral in Brazil of Brazilian Jean Charles de Menezes, who was shot eight times on a tube-train after being mistaken for a suicide bomber in London. In March 2007, she became involved with Sarah Teather and the campaign to close Guantanamo Bay.
From 2007 to 2009, she was Chair of the World Future Council. On 7 July 2007, Jagger presented at the German leg of Live Earth in Hamburg. In July 2008, she was a signatory to a petition to the Catholic bishops of England and Wales to allow the wider celebration of the traditional Latin Mass. In January 2009, Jagger addressed some 12,000 people who rallied in Trafalgar Square in protest against an Israeli offensive in the Gaza several days earlier.