Torchwood creator Russell T Davies has ruled out the possibility of Doctor Who ever appearing in the spin-off show.
Torchwood was created as a vehicle for John Barrowman's Captain Jack Harkness, and although he has made many appearances in Doctor Who, Davies has said this will not be reciprocated.
Speaking at a press conference to launch the new Torchwood series, Davies said: "No, because actually the Doctor's never gone into Torchwood, it's always been the other way round, Torchwood's gone into Doctor Who, which I think is correct because there's a big child audience for Doctor Who and I think that would demand if we took the Doctor into Torchwood it would be a clash of styles."
Speaking about the new series, Davies said: "This is a nice different kind of science fiction. Because often science fiction, it's the toys, it's the spaceship or the aliens or the laser beams, which we've done tons of in the past ourselves. But what I like about this year's version of Torchwood is that it's just a concept. There's some alien fun to come, but it's really taking an idea – that we all live forever – dropping it into the middle of society and just watching the waves go out and watching all of us react, watching how our society bends, how it falls, how it brings out the best of us and the worst of us."
Asked about the appeal of the show, Davies answered: "[There is a] fluid sexuality, which in this genre is quite rare," and added, "I think no matter how serious it gets, there's a great sense of fun. It never loses its sense of humour, even in the darkest of moments, which I think is a very true thing of human nature, it's a very human survival instinct."
Series 4 of Torchwood premieres on BBC1 on July 8.
Iconic sci-fi films...