Stephen Russell Davies, known professionally as Russell T Davies, is a Welsh screenwriter and television producer. He is best known for being the original showrunner and head writer of the revival of the BBC sci-fi series Doctor Who, from 2005 to 2010 and again since 2023. His other notable works include creating the series Queer as Folk (1999–2000), Bob & Rose (2001), The Second Coming (2003), Casanova (2005), Doctor Who spin-offs Torchwood (2006–2011), The Sarah Jane Adventures (2007–2011), and The War Between the Land and the Sea, Cucumber (2015), A Very English Scandal (2018), Years and Years (2019), It's a Sin (2021) and Nolly (2023).