Terry Wogan (in-universe)

Terry Wogan, (PROSE: That Time I Nearly Destroyed the World Whilst Looking for a Dress) also known as simply Wogan, (TV: Untitled, PROSE: I Am a Dalek) was a "dreaded" individual from the planet Shepherd's Bush, (TV: Untitled) distinct for his "Irish chatter". (PROSE: I Am a Dalek)

Biography
The version of Heathcliffe Bower who didn't assassinate Margaret Thatcher occasionally appeared on Wogan. (PROSE: The Assassin's Story)

The Sixth Doctor met the dreaded Wogan. He later compared him to Roland Rat: The Series, believing the latter to be much worse. (TV: Untitled)

In April, 1999, when celebrity Polly Wright attended the funeral of Jane Vapid, she knew that everyone was hoping to be named in the television commentary by Terry Wogan. (PROSE: That Time I Nearly Destroyed the World Whilst Looking for a Dress)

In the 2000s, Kate Yates woke one morning to the news. Once that finished, Wogan's programme began, and Yates dozed off for ninety minutes, reawaking just as Wogan "hand[ed] over to Ken Bruce". (PROSE: I Am a Dalek)

Behind the scenes

 * In Bang-Bang-a-Boom!, the character Logan (and the Intergalactic Song Contest) was a parody of Terry Wogan and the Eurovision Song Contest.

Information from invalid sources
On the scanner in Seventh Doctor's the TARDIS, footage of Terry Wogan played. (NOTVALID: Untitled)

Dimensions in Time starred Terry Wogan. (NOTVALID: Doctor Who? 209)