Adrian Greenwood (The Bells of Saint John)

Adrian Greenwood was an employee of Rosemary Kizlet whose Flickr was found by Clara Oswald using face-match. She used this information to discover where Kizlet's offices were.

On the orders of the Great Intelligence in 2013, Miss Kizlet reset him and all other employees to factory settings, and they returned to their true selves. (TV: The Bells of Saint John)

Behind the scenes
The Flickr profile was based on the episode's production buyer Adrian Greenwood. (DWMSE 37)