...or sherlock...maybe 
Link
Maybe it's time for Rassilon to regenerate?:

This week Mark Gatiss tweeted about Roger's performance in "The Man Who Haunted Himself", the 1970 fantasy drama directed by Basil Dearden. "I have such a soft spot for the film," said Gatiss.
Roger's twitter account cheekily responded: "thank you. I might be equally wonderful in Dr Who or Sherlock if asked!"
Gatiss responded simply: "My life is complete! Will be [in] touch."
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Maybe it's time for Rassilon to regenerate?:
