Gordon Brown Photo - London UK   Writer Terry Pratchett  (the author of the Discworld comic book fantasy series) delivers a petition to the British Prime Miniser Gordon Brown in Downing Street  The petition is on behalf The Alzheimers Research  Trust to increase  money spent on this health issue Pratchett has been involved in promoting research on this brain disease following his own admission that he was now suffering from the same affliction 26th November 2008 Matt LewisLandmark Media