The daughter of a Customs and Excise officer, Davies was born in Tonypandy, Glamorgan, in 1948, and was educated at Our Lady's School, Cardiff.
She trained for an acting career at the Royal Academy of Dramatic Art in London before going into repertory at the Bristol Old Vic.
[4] Her highest-profile role was as Davinia Prince, the central character in The Foundation, a British television series of 1977–1978 by ATV about the widow of a business tycoon.
[5][6] In 1989 she played Doll Tearsheet in an English Shakespeare Company production of Henry IV, Part 2.
[7] In December 1993, at the age of forty-five, Davies drowned at Lavernock Point, on the coast of the Vale of Glamorgan.