Devoutly Roman Catholic, Patricia Hayes headed the Catholic Actors Guild in Britain for a number of years.
Said in an interview with Radio Times, in 1988, that she had turned down a cameo role in "Doctor Who" (1963).
She attended Sacred Heart school in Wandsworth, London.
She was awarded an O.B.E. (Officer of the Order of British Empire) in the 1987 Queen's Honours List for her services to drama.
She was the mother of actor Richard O'Callaghan and two daughters, Gemma and Teresa.