Her family says she passed away at home yesterday after a battle with dementia which she was diagnosed with back in 2014.
Prunella was best known for her role as Sybil, the long-suffering wife of Basil Fawlty, played by John Cleese.
We’re told she’d been watching the show, which marked its 50th anniversary this year, just a day before her death.
Prunella and her husband, actor Timothy West, tied the knot at Chelsea Register Office in 1963.
They welcomed two sons Samuel and Joseph and Timothy also had a daughter Juliet from his first marriage.
The pair were married for 61 years, latterly splitting their time between their home in Wandsworth and their canal narrow boat.
He passed away last November at the age of 90.
Prunella’s seven-decade acting career saw her in multiple roles from the 1950s, including in 1960s sitcom Marriage Lines, before featuring as the wife of John Cleese’s character Basil Fawlty, in two series of Fawlty Towers in 1975 and 1979.
John Cleese has described his on-screen wife as “a really wonderful comic actress” and “a very sweet lady”.
“Scene after scene she was absolutely perfect,” he added.
Jon Petrie, director of comedy at the BBC which broadcast Fawlty Towers, described her as a “national treasure whose brilliance as Sybil Fawlty lit up screens and still makes us laugh today”.
