She was born in London, and her first major screen role was in Cliff Richard's 1963 film, Summer Holiday A few years later she made her big breakthrough in television comedy, playing Rita, the married daughter of Alf Garnett in Till Death Us Do Part.
From then on, Una Stubbs remained a popular television personality. She went on to play the role of Aunt Sally in the ITV children's series, Worzel Gummidge opposite Jon Pertwee, and was for several years one of the team captains in the weekly game show, Give Us A Clue.