The Silent Twins (1986)
- Sharon I. Parker - June Gibbons
- Shirley I. Parker - Jennifer Gibbons
- Juliette Tony - Young June
- Jillian Tony - Young Jennifer
- Ena Cabayo - Gloria Gibbons
- Ruddy L. Davis - Audrey Gibbons
- Beverley Martin - Greta Gibbons
- Natasha Dixon - Rosie Gibbons
- Marcus D'Amico - Wayne Kennedy
- David Blackburn - Carl Kennedy
- Ifan Huw Dafydd - Tim Thomas
- Madeline Adams - Cathy Arthur
- Sandra Voe - Helen
- J.O. Roberts - Dr Evan Davies
- Tony Robinson - Dr Hamilton
- Richard Pescud - Psychiatrist
- Peter Penry-Jones - Anthony Evans
- Anthony Morse - John Diehl
- John Savident - Judge
- Clyde Pollitt - Clerk of Courts
- Alun ap Brinley - Michael Jones
- Di Botcher - Officer Kyle
- Annest Williams - Officer Whiteley
- Gareth Gwyn-Jones - Dr Rees
- Anwen Williams - Teacher
- Margarite Richards - Guider
- Gwenno Dafydd - Prison Warden
- Ted Maynard - Lt. Kennedy
