Walliams and Whitehall Sherlock Spook
http://www.radiotimes.com/news/2016-11-24/watch-david-walliams-and-jack-whitehall-spoof-benedict-cumberbatch-and-martin-freeman-in-sherlock
https://rycardus.wordpress.com/2016/11/02/sherlock-and-the-sorcerer/