[3] En route to Heathrow Airport to start her new job as a stewardess with Air Australia, her aunt Vanessa's vehicle (in which she is riding) suffers a flat tyre.

Tegan is stubborn,[4] loud, and direct, with a no-nonsense manner and not afraid to speak her mind (in Earthshock she describes herself as "just a mouth on legs").

Eventually, the carnage surrounding the events of Resurrection of the Daleks proves too much[4] and she bids an emotional good-bye to both the Doctor and Turlough in 1984 London.

In the 2007 Children in Need special episode "Time Crash", the Tenth Doctor asks his fifth incarnation if he is still travelling with Tegan in his own relative timeline.

In The Sarah Jane Adventures two-parter Death of the Doctor (2010), Tegan is mentioned as having campaigned for the rights of Indigenous Australians.

In "The Crimson Horror" (2013), the Eleventh Doctor tells Clara Oswald that he spent a long time trying to get a "gobby Australian" to Heathrow Airports.

Although she finds it difficult to enter into relationships and is suffering from a terminal illness, she tells the Doctor that she has no regrets about her time with him, and now appreciates her life to the full.

In the spin-off short story "Good Companions" by Peter Anghelides Tegan has suffered a nervous breakdown and convinced herself that her time with the Doctor was a delusion.