She was known for her work on thrillers and mysteries, and she often collaborated with Frank Launder, Sidney Lumet, and Lewis Gilbert.
[1][2] Born in London, she began her career as a continuity girl, and then became an assistant editor working on films such as The Life and Death of Colonel Blimp (1943).
Connell's subsequent films included I See a Dark Stranger (1946), The Blue Lagoon (1949), and Alfie (1966); for the latter, she earned a nomination for the BAFTA Award for Best Editing the first year the award was introduced, making her the first woman ever nominated in that category.
[3] On television, she acted as producer on the ITC series The Adventures of Robin Hood.
She also served as co-director on the 1954 film Tale of Three Women.