She began her career as a child in the film drama Moments with her parents and her brother, Paul.
Helena Michell had numerous television roles in the 1990s, including Jeeves and Wooster and Agatha Christie's Poirot in 1990, a pivotal role in the television version of P.D. James' Inspector Dalgleish story Devices and Desires (1991), Sharpe's Enemy (1994), the television adaptation of Ruth Rendell's Heartstones and also in The Bill in 1996.
This was interspersed with stage parts in mainly children's theatre, and she has appeared with her parents at Chichester in 1997.
Helena Michell is married to the English playwright Simon David Eden and together they have a daughter called Millie. She continues her theatre work largely through their production company, Shiny Pin Productions, and as an acting coach. She makes occasional appearances on television. Her last notable large screen part was as Sheila in the romantic comedy Little Box of Sweets in 2007.
- "Keith Michell Biography (1928-)". Filmreference.com. Retrieved 2016-06-24.
- "Simon David Eden - Playwright, Screenwriter, Artist, Lyricist and Author". Success Circuit. Retrieved 2016-06-24.
- ": Shiny Pin Productions Ltd". Shinypinproductions.com. Retrieved 2016-06-24.
- "Team". The Practice Room. Retrieved 2016-06-24.