Question about the 1984 BBC television drama: Diana.?

In 1984, BBC television made a drama starring Patsy Kensit, Jenny Seagrove, Kevin McNally and several others, called 'Diana'. Based on the book by R. F. Delderfield it followed the love and lives of a young boy and a rich young girl. With the story based in Devon, most of the filming was carried out somewhere in the Southwest of England during the early 1980's, but does anyone know the exact locations that were used?