After much speculation, the Sherlock special is confirmed to be a one off set in Victorian London. No broadcast date as of yet but the episode is expected to air around Christmas 2015.

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"The special is its own thing. We wouldn’t have done the story we’re doing, and the way we’re doing it, if we didn’t have this special. It’s not part of the run of three episodes.

"So we had this to do it – as we could hardly conceal – it’s Victorian. Mark Gatiss and me, we wanted to do this, but it had to be a special, it had to be a separate entity on its own. It’s kind of in its own little bubble." - Steven Moffat

Watch Ben Stiller and Owen Wilson Strut Down a Paris Fashion Week Runway as Their Zoolander Characters