| 1976 | Horizon Season 1976 Episode 32 – The Mystery of King Arthur and His Round Table | | 0 | 10 years |
| Horizon Season 1976 Episode 31 – Half-Way to 1984 | | 0 | 10 years |
| Horizon Season 1976 Episode 30 – The Long Valley | | 0 | 10 years |
| Horizon Season 1976 Episode 29 – Secrets of a Coral Island | | 0 | 10 years |
| Horizon Season 1976 Episode 28 – A Child of Our Own | | 0 | 10 years |
| Horizon Season 1976 Episode 27 – The Selfish Gene | | 0 | 10 years |
| Horizon Season 1976 Episode 26 – Billion Dollar Bubble | | 0 | 10 years |
| Horizon Season 1976 Episode 25 – The Hot-Blooded Dinosaurs | | 0 | 10 years |
| Horizon Season 1976 Episode 24 – The Bull’s Eye War | | 0 | 10 years |
| Horizon Season 1976 Episode 23 – What’s Wrong With the Sun? | | 0 | 10 years |
| Horizon Season 1976 Episode 22 – A Home Like Ours… A Story of Four Children | | 0 | 10 years |
| Horizon Season 1976 Episode 21 – The Great British Drought | | 0 | 10 years |
| Horizon Season 1976 Episode 20 – Dying | | 0 | 10 years |
| Horizon Season 1976 Episode 19 – The Children of Peru | | 0 | 10 years |
| Horizon Season 1976 Episode 18 – The Planets | | 0 | 10 years |
| Horizon Season 1976 Episode 17 – Why Did Stuart Die? | | 0 | 10 years |
| Horizon Season 1976 Episode 16 – A Lesson for Teachers | | 0 | 10 years |
| Horizon Season 1976 Episode 15 – The Vision of the Blind | | 0 | 10 years |
| Horizon Season 1976 Episode 14 – Geronimo’s Children | | 0 | 10 years |
| Horizon Season 1976 Episode 13 – The Pathway from Madness | | 0 | 10 years |
| Horizon Season 1976 Episode 12 – The World of Margaret Mead | | 0 | 10 years |
| Horizon Season 1976 Episode 11 – The Edelin Affair | | 0 | 10 years |
| Horizon Season 1976 Episode 10 – The Chemical Dream | | 0 | 10 years |
| Horizon Season 1976 Episode 9 – Inside the Shark | | 0 | 10 years |
| Horizon Season 1976 Episode 8 – The Lords of the Labyrinth | | 0 | 10 years |
| Horizon Season 1976 Episode 7 – The Case of the Bermuda Triangle | | 0 | 10 years |
| Horizon Season 1976 Episode 6 – A Question of Trust | | 0 | 10 years |
| Horizon Season 1976 Episode 5 – King Coal Revived | | 0 | 10 years |
| Horizon Season 1976 Episode 4 – The Incredible Machine | | 0 | 10 years |
| Horizon Season 1976 Episode 3 – A Fair Share of What Little We Have | | 0 | 10 years |
| Horizon Season 1976 Episode 2 – Intimate Strangers | | 0 | 10 years |
| Horizon Season 1976 Episode 1 – The Transplant Experience | | 0 | 10 years |
