Russell T Davies on BBC Radio

Doctor Who executive producer Russell T Davies was the first guest on Jonathan Ross's BBC Radio Two programme on Saturday morning.Davies confirmed there will be a Christmas special in 2007 and said he has already planned the storyline for Season Four, which is pencilled in for transmission in the spring of 2008.He also spoke about his life long love of the series, his favourite classic series Doctor, and the joys of working in Wales.The whole programme is available via the BBC listen again facility for the next seven days.Davies first appears around 38 minutes into the programme.He will also be a guest on Loose Ends on BBC Radio Four at 6.15pm Saturday evening.