Gerry Davis was a British television writer, best known for his contributions to the science-fiction genre. He also wrote for the soap operas Coronation Street and United!. From 1966 until the following year, he was the script editor on the popular BBC science-fiction series Doctor Who, for which he co-created the popular cybernetic monsters known as the Cybermen, who made several appearances in the series over the following twenty-two years. His fellow co-creator of these creatures was the programme's unofficial scientific adviser Dr. Kit Pedler, and following their work on Doctor Who, the pair teamed up again in 1970 when they created a science-fiction programme of their own, Doomwatch. Doomwatch ran for three seasons on BBC One from 1970 to 1972, and also spawned a novel written by Davis and Pedler, and later a cinema film and a 1999 revival on Channel 5. Davis briefly returned to writing Doctor Who, penning the original script for Revenge of the Cybermen, in 1975, though the transmitted version was heavily rewritten by the then script-editor Robert Holmes. He also adapted several of his scripts into novelisations for Target Books. With Kit Pedler, he wrote the science-fiction novels Mutant 59: The Plastic Eaters (1971), Brainrack (1974) and The Dynostar Menace (1975). In the 1980s Davis worked in America both in television and on feature films such as The Final Countdown (1980). In late 1989 he and Terry Nation made a joint but unsuccessful bid to take over production of Doctor Who and reformat the series mainly for the American market. Gerry Davis died on August 31 1991.