Board Thread:The Reference Desk/@comment-4139960-20130210230919/@comment-188432-20130211162832

It comes from Doctor Who (2009) #1 — that is, Silver Scream. Archie Maplin asks the Doctor where his accent comes from and he says, "I picked it up on the Powell Estate in Peckham". This, incidentally, makes a narrative truth of something cut out of the early Tennant scripts that Rose somehow influenced the Doctor's accent during the regenerative process — an idea of RTD's to explain why he wasn't going to allow Tennant to use his (IMHO: far, far superior) Scots accent.