The Mistress co-starred which English actress and entrepreneur?
The Mistress (TV series):  Starring Felicity Kendal and Jane Asher, it was written by Carla Lane. Jane Asher: Jane Asher (born 5 April 1946) is an English actress, author and entrepreneur, who achieved early fame as a child actress, and has worked extensively in film and TV throughout her career.
Jane Asher