Russell T Davies Russell T Davies OBE ( born Stephen Russell Davies in Swansea on 27 April 1963 ) was head writer and executive producer on " Doctor Who " from series 1 in 2005 to series 4 in 2007 - 10 , and was creator and executive producer of spin - off series " Torchwood " and " The Sarah Jane Adventures " , having written or co - written six episodes of " Torchwood " and three episodes ( two stories ) of " The Sarah Jane Adventures " . Prior to this , in 1996 , he had written the Virgin New Adventures novel " Damaged Goods " . He is the single most prolific producer of televised entertainment in DWU history . His position is virtually unassailable because he was producing " Torchwood " , " The Sarah Jane Adventures " and " Doctor Who " simultaneously . A Welshman himself , his commitment to producing " Doctor Who " in Wales has led to a massive expansion of the television production capacity in that nation . His deliberate inclusion of recognisable Welsh landmarks in " Doctor Who " has increased tourism in the country . As such , his net impact on the economy of Wales is profound . Biography . Previous work . Russell ' s first major success was the CBBC fantasy adventure serial , which contained strong similarities to " Doctor Who " . Davies would create another children ' s supernatural drama series , . He created the award - winning original " " ( which includes several ) and a supernatural drama for adults , , which starred the future Ninth Doctor , Christopher Eccleston , as a reborn Christ . " Doctor Who " and related work . Davies ' first professional involvement in " Doctor Who " was in 1996 , when he wrote the Virgin New Adventures novel " Damaged Goods " . The novel connected to Davies ' previous work by featuring a cameo by Marcie Hatter from " Dark Season " . Revival and work on spin - offs . After 2005 , when the newly revived " Doctor Who " franchise executive produced by Davies flourished , Davies created two spin - off series : " Torchwood " and " The Sarah Jane Adventures " . He wrote or co - wrote the debut episodes of each . Unlike " Doctor Who " , his writing involvement in these two shows has been minimal ( in " " Davies writes that he was to have written " Kiss Kiss , Bang Bang " ; he provided a pre - credits sequence involving a Blowfish driving through Cardiff ) . Davies was also a regular contributor to " Doctor Who Magazine " , for which he wrote a regular column in which he often dropped hints about upcoming stories , usually in the form of random snatches of dialogue or listing words that would appear in the script . Departure . On 20 May 2008 , Davies publicly announced his departure from " Doctor Who " . After the fourth series ' specials ended with " The End of Time " in January 2010 , from series 5 , also airing in 2010 , Davies was succeeded by Steven Moffat in his role as " Doctor Who " head writer and executive producer . Davies continued to executive produce " Torchwood " until its fourth series and " The Sarah Jane Adventures " until its fifth series , both aired in 2011 . Davies was also an executive producer for " Sarah Jane ' s Alien Files " . Further work on spin - offs . In 2015 , Davies ' s 1996 novel " Damaged Goods " was adapted for audio by Big Finish Productions . Davies worked with Big Finish Productions in the creation of the 5th series of " Torchwood " , helping co - create its characters . Inclusion of LGBT characters . With the exception of his work in children ' s television , he has written an openly and proudly gay character in all his work , and Doctor Who is no exception . He was the first to write about confirmed transsexuality ( " The End of the World " ) and confirmed male ( " Aliens of London " ) and female homosexuality ( " Gridlock " ) . While Steven Moffat holds the distinction of being the first writer to write about bisexuality ( " The Doctor Dances " ) , Russell T Davies created Captain Jack , the first openly omnisexual character in televised " Doctor Who " . Several episodes of " Doctor Who " and " Torchwood " have featured same - sex couples , most notably " Torchwood " which established a relationship between Captain Jack and Ianto Jones in the second season . " Doctor Who : The Writer ' s Tale " . In February 2007 , Davies and " Doctor Who Magazine " writer Benjamin Cook agreed to exchange e - mails with the intention of creating a series of articles for DWM on the creation of select episodes from the then upcoming Series 4 . This correspondence soon grew well beyond the confines of the magazine and in the autumn of 2008 the 512 - page " " was published . A second edition featuring some three hundred pages of additional material covering production of his final stories for " Doctor Who " was published in January 2010 . Significant additions to the " Doctor Who " universe . Russell T Davies came up with the concept of the Torchwood Institute , the Slitheen , the Judoon and the Cult of Skaro . He established a major piece of backstory , the Last Great Time War and the resulting destruction of Gallifrey and the Time Lord race . He also created the Doctor ' s companion s Rose Tyler , Jack Harkness ( in conjunction with episode writer Steven Moffat ) , Martha Jones , Donna Noble and Mickey Smith ( as well as several one - off companions ) . He devised the concepts , formats and regular characters ( other than Sarah Jane Smith ) for " Torchwood " and " The Sarah Jane Adventures " and established the idea of producing mini - episodes for special events . He cast Christopher Eccleston and David Tennant as the Ninth and Tenth Doctor s , as well as their associated companions . On his watch numerous original - series characters and enemies have been reintroduced to new audiences . The enemies he reintroduced were the Auton s , the Nestene Consciousness , Dalek s , Cybermen , Macra , the Master , Sontaran s and Davros . The characters he reintroduced included Sarah Jane Smith , K9 , Brigadier Lethbridge - Stewart and Jo Grant . The Fifth Doctor made a return appearance in an episode produced by Davies and his script for " The Next Doctor " incorporated a sequence incorporating footage of the first ten Doctors . Although it has been a part of " Doctor Who " lore since its earliest days ( see TV : " The Aztecs " , for example ) , it was during Davies ' tenure that the concept of certain events and people being " fixed points in time " and unalterable was solidified . This concept is important in explaining why events such as the Second World War and the Iraq War still occurred in the Whoniverse , though this seems to apply mainly to Earth - based events and not events such as Dalek invasions .