He has written four full episodes of Doctor Who, ``The Shakespeare Code'' in 2007, ``The Unicorn and the Wasp'' in 2008, ``The Lodger'' in 2010 and ``Closing Time'' in 2011. Roberts also co-wrote, with Russell T Davies, ``Invasion of the Bane'', the pilot episode of the Doctor Who spin-off series The Sarah Jane Adventures. He wrote two two-part stories for the full series of The Sarah Jane Adventures, which began broadcasting in the autumn of 2007, and another two two-part stories for the 2008 series.
Roberts
Russell T Davies