Okay, I've kinda stumbled on this thing since I'm not a proper whovian by any means~
Virgin New Adventures is publishings based on Doctor Who, and in one of them stories is called All-Consuming Fire which includes Sherrinford Holmes (The hypthetical eldest Holmes brother, who from what I can see has been fitted nicely into the whole Holmes family). Also from what I can gather Sherlock and Watson help the Doctor solve another mystery involving aliens being worshipped by a cult that Sherrinford has been taking part in.
^Anyway, This close enough to Canon?