[1][2] Her father was a respected physician in Glasgow who was serving in the army during World War I at the time of her birth and her mother went to her parents' home in Aberdeen where Barnett was born.
She appeared on the programme for ten years but was not an original panelist, her seat having been previously occupied by Marghanita Laski.
In 1980 she was found guilty of shoplifting, and fined £75 for stealing a can of tuna and a carton of cream worth 87 pence from her village grocer.
This brought her briefly back into the public eye; four days later on 20 October, she was found dead at her home in Cossington, Leicestershire.
Two days before her death, Lady Barnett told an interviewer she was a compulsive thief and had been shoplifting for years.