Cockney referred to a resident of an area in London, as well as the dialect they spoke.
Ben Jackson was a Cockney. (PROSE: Invasion of the Cat-People)
While visiting London in 1860, the Doctor and Leela discussed their previous visit in 1889. Leela referred to the Cockney "tribe". (TV: The Talons of Weng-Chiang, AUDIO: The Ghosts of Gralstead)
Tamsin Drew played "a Cockney drab who gets done to death by Jack the Ripper" for "one glorious summer" in re-enactments of the murders at the London Dungeon. (AUDIO: Deimos)
Ada Mullins, aka "the Unicorn", was a Cockney master thief responsible for jewel thefts at country houses in the 1920s. (TV: The Unicorn and the Wasp)
Clara Oswald described the fictional EastEnders character Dot Cotton as a "famous Cockney chimney" to the Governor of the Prison. (PROSE: The Blood Cell)