Instagram

Instagram was an app used by conspiracy theorist Sam Hallett in the 2000s. His favourite filter was "Valencia". (AUDIO: The Conspiracy) April MacLean told the students at the 2016 Coal Hill Academy Autumn Prom that they never listened to niceness, but they'd listen to her if she was "some a-hole telling you [them] how fat you looked on Instagram." (TV: For Tonight We Might Die)

Behind the scenes

 * Although The Conspiracy was set between 2007 and 2009, in the real world Instagram was not released until 2010.
 * The Doctor Who franchise, including Big Finish, has an Instagram account run by the BBC Group.