Jean Marsh who was in the great British series Upstairs, Downstairs.
Annette has a lot of trouble getting her horse to jump over even low hurdles. It's revealed that her mother was a great horsewoman but had an accident and gave up riding. Annette decides to leave the course. One of the instructors talks to her and she overcomes her fear of jumping.
What they are doing is for some kind of horsemaster certificate or something, as they have to take a test at the end of the course that covers a lot of different things.
Main Annette Index