Just looked at freebmd and Daphne S Maurice was born March q 1921 Bath and Kathleen I March q 1924 Bath. Mother's maiden name Staples. So the family were living there for a few years before they went to South Africa. No sign of Audrey May even when doing a general search. Perhaps she was born abroad. If these are your relatives, was your father their brother? I don't think you have given any other names of your family in this discussion.