It's Never Too Late 1956

Synopsis:

To Laura Hammond's large family, she is simply the mother who makes all their lives run more smoothly. But although they don’t know it, she is a very successful novelist and when her screenplay comes to the attention of a Hollywood producer, Laura is suddenly plunged into the big time.

Directed by: Michael McCarthy
Written by: Edward Dryhurst
Runtime: 96 minutes
Tagline: Pandemonium Was Her Inspiration!
Cast:
Phyllis Calvert
Phyllis Calvert
Laura Hammond 
Patrick Barr
Patrick Barr
Charles Hammond 
Susan Stephen
Susan Stephen
Tessa Hammond 
Guy Rolfe
Guy Rolfe
Stephen Hodgson 
Jean Taylor Smith
Jean Taylor Smith
Grannie 
Sarah Lawson
Sarah Lawson
Annie Hammond