<P> Torchwood ( UK : / ˈtɔːrtʃˌwʊd / ) is a British science fiction television programme created by Russell T Davies . A spin - off from the 2005 revival of long - running science fiction programme Doctor Who , Torchwood aired four series between 2006 and 2011 . The show shifted its broadcast channel each series to reflect its growing audience , moving from BBC Three to BBC Two to BBC One , and acquiring US financing in its fourth series when it became a co-production of BBC One and Starz . In contrast to Doctor Who , whose target audience includes both adults and children , Torchwood is aimed at an older audience . Over its run , the show explored a number of themes ; prominent among these were existentialism , homosexual and bisexual relationships , and explorations of human corruptibility . </P>
<P> Torchwood ( UK : / ˈtɔːrtʃˌwʊd / ) is a British science fiction television programme created by Russell T Davies . A spin - off from the 2005 revival of long - running science fiction programme Doctor Who , Torchwood aired four series between 2006 and 2011 . The show shifted its broadcast channel each series to reflect its growing audience , moving from BBC Three to BBC Two to BBC One , and acquiring US financing in its fourth series when it became a co-production of BBC One and Starz . In contrast to Doctor Who , whose target audience includes both adults and children , Torchwood is aimed at an older audience . Over its run , the show explored a number of themes ; prominent among these were existentialism , homosexual and bisexual relationships , and explorations of human corruptibility . </P>
when does torchwood spin off from doctor who
when does torchwood spin off from doctor who
2006
2006