 Many of his programmes involve proffering unrehearsed answers to the public on scientific topics, as on the Cliff Michelmore series "Whatever you think" (BBC) and "Science Hour" with Clive Bull ( for LBC).On television he hosted a game show "Computer Challenge" and the documentary series "Food for Thought" in Britain and "Jenseits des Kanals" in Germany.His recent TV appearances include presenting "The Man Behind the da Vinci Code" and featuring in "Weird Weapons of World War II", based on his two books about the Second World War (see below).