So very sorry to hear of Serge's passing. I have many happy memories of campaigning with him in Kew 2009-10 - knocking on doors, running street stalls, quizzes, not organising jumble sales (if you know, you know) ... He was such a motivated and energetic campaigner, rain or shine, and I learned a lot from him. To Julia and other family members I offer my deepest sympathies. Serge was a great man who did so much for so many.