Beaumont attended RADA, but after only one term she left and found a job in a pantomime. She went on to dance for Norman Wisdom at the London Palladium and in the musical Limelight. She became a Rank contractee at nineteen and starred as a leading lady in several films between 1956 and 1959, including Eyewitness, The Spaniard's Curse, No Safety Ahead and Man of the Moment. She appeared in Carry On Nurse as Nurse Frances James.