BBC iPlayer (in-universe)

BBC iPlayer was a website on which one could watch past episodes of a selection of TV series. (TV: The Time of the Doctor, WC: The Zygon Isolation) The website required a TV Licence in order to be used legally. (WC: The Zygon Isolation)

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)

On 10 May 2020, Petronella Osgood and Zygon Osgood watched an episode of Doctor Who called The Zygon Invasion on BBC iPlayer, at the website address, with an account under the name of "Mikey". (WC: The Zygon Isolation)

Osgood had iPlayer bookmarked in her bookmarks bar on Google Chrome. (WC: The Zygon Isolation)

Broadcasting Doctor Who
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 initially stayed online for seven days following the story's initial television broadcast.

This limit was extended over time, until, starting on 4 June 2018 (initially to promote series 11), all back episodes of Doctor Who beginning with series 1 (including mini-episodes The Night of the Doctor and the series 9 prologue), were made available online indefinitely.

These were later joined by the back catalogues of Torchwood and The Sarah Jane Adventures, which have had no new televised instalments for over a decade.

Exclusive programming
Doctor Who Extra was an iPlayer exclusive in the UK after each related episode's broadcast.

Class originally premiered on the BBC Three section of iPlayer between 9:30 and 10:00 PM.

Other details
The inventor of iPlayer, Ben Lavender, appears in the documentary Interweb of Fear.

"Mikey" in The Zygon Isolation is the account of Michael Williams, the webcast's director and editor.