Joan was born in London and was the older sister of stage and screen actress Maggie King.
She often appeared beside her sister in productions, and she made her screen debut aged 18 in the 1957 film version of English play When We Are Married.
She emigrated to Perth in 1965, where she would go on to win roles in TV shows like The Scalp Merchant, Hector’s Bunyip and Flight Into Hell.
From there, the acting legend became a household name when she starred as the matron of Wandin Valley Bush Nursing Hospital Matron Sloane in a whopping 453 episodes of A Country Practice between 1983 and 1990.
She then went on to feature in E Street as Mary Patchett, All Saints as Mary Price and Neighbours as beloved character Valda Sheergold.
source: express.co.uk