McEwan starred as the spinster consultant detective Jane Marple in 12 TV films on ITV.
The Bafta award winner had a long and successful career in theatre, television and films which saw her work alongside the likes of Laurence Olivier and Kenneth Williams.
John Challis, known for playing Boycie in Only Fools And Horses, and Charlie Lawson who plays Jim McDonald in Coronation Street, were among the stars to pay tribute to the actress.
Her children said in a statement: “Following a stroke at the end of October and a period in hospital, Geraldine McEwan passed away peacefully on January 30. Her family would like to thank the staff at Charing Cross Hospital who cared for her incredibly well.”