She is best known for playing Jenny Russell in the BBC sitcom Life Without George (1987—1989) and Lady Patricia Brewster in Heartbeat (1997—2003).

[3] Making her screen debut in 45 episodes of The Cedar Tree from 1977 to 1978, Royle went on to become known for her role as Jenny Russell in the BBC sitcom Life Without George, which ran for three series from 1987 to 1989, as well as her role in ITV1's 1960s-based drama Heartbeat, in which she played Austin Healey-driving Lady Patricia Brewster in four episodes.

[6] Other television shows Royle has appeared in are Blake's 7, The Professionals, Bergerac, Hammer House of Mystery and Suspense, Cribb, Crossroads, The Outsider, Casualty, Ladies in Charge, Crime Traveller, The Bill, Doctors, and Father Brown.

[7] Her film career includes roles in The Greek Tycoon (1978) and Tuxedo Warrior (1982).

From 2019 to 2023, Royle played Mrs Bright in the Inspector Morse prequel Endeavour, appearing in five episodes of the series.