berry trained under elsie fogerty at the central school of speech and drama, then based at the royal albert hall, london. she was the voice director for the royal shakespeare company from 1969 to 2014, and worked as a voice and text coach as an instructor at london's central school of speech and drama. she conducted workshops all over the globe, including korea, russia, and asia. her work also extended to prisons, using shakespeare as a vessel to find confidence in speaking and response to imagery. one of her earliest teachers was barbara bunch. in addition to her voice and text work in the theatre, she also did work in film, including serving as "dialogue coach" on "the last emperor" (1987); "dialogue coach" on "stealing beauty" (1996); and as "voice specialist" on julie taymor's 1999 film, "titus".