David Wall and Wendy Ellis - The Ribbon Dance from ‘La Fille Mal Gardee’

This is performance and rehearsal footage - I do not have a date for these films - probably late 1970s early 1980s? Can anyone confirm? The rehearsal footage is conducted by Michael Somes. Wendy Ellis was his third wife - the dancer having been previously married to Deirdre Annette Dixon and Dame Antoinette Sibley.