BBC iPlayer (in-universe)

The Eleventh Doctor begged Clara Oswald to learn to use iPlayer after being forced to use his TARDIS to travel back in time every time she missed a television programme. (TV: The Time of the Doctor)

Behind the scenes
Since it went live on 25 December 2007, BBC iPlayer has offered whole episodes of Doctor Who to its web users in the UK. Episodes typically stay online for seven days following the story's initial television broadcast.