According to the Angels Annual 1979, Jay Harper's parents were killed when she was a baby and she lived with her Grandmother until she was eight. When Granny was hospitalised. Jay was sent to a children's home.
Played by Shelley King, Jay was a 2nd year Student Nurse who lived in the Nurses' Home and tended to be shy and withdrawn, especially at any mention of happy families. At some point in the story, the stress of the job proved to be too much for her, and she took to hiding a bottle of gin in the ladies' loos. She eventually married a doctor, got pregnant and left.