Jenny left school at the age of 16 to train with the Ballet Rambert. By the time she was 17, she was touring the world with a French cabaret group. Upon her return to Britain, she joined Lionel Blair's group of dancers before breaking into acting. She played stooge to many comedians including Morecambe and Wise, Jimmy Tarbuck, Benny Hill, Frankie Howerd, Mike and Bernie Winters and Les Dawson. At the same time, she acted on television programmes such as The Protectors (1972), Paul Temple (1969), General Hospital (1972), Beryl's Lot (1973) and Public Eye (1965). In addition, she was a hostess on games shows like The Golden Shot (1967) and Masterspy (1977), in which she played Miss Moneypacker, and was a regular panelist on the talent show Search for a Star (2003).