| 1980 | Horizon Season 1980 Episode 25 – Anatomy of a Volcano | | 0 | 10 years |
| Horizon Season 1980 Episode 24 – The Slatemakers | | 0 | 10 years |
| Horizon Season 1980 Episode 23 – The Spike | | 0 | 10 years |
| Horizon Season 1980 Episode 22 – The Mondragon Experiment | | 0 | 10 years |
| Horizon Season 1980 Episode 21 – Behind the Horoscope | | 0 | 10 years |
| Horizon Season 1980 Episode 20 – Smoker’s Luck | | 0 | 10 years |
| Horizon Season 1980 Episode 19 – Once In a Million Years | | 0 | 10 years |
| Horizon Season 1980 Episode 18 – The Dead Sea Lives | | 0 | 10 years |
| Horizon Season 1980 Episode 17 – The Way Out | | 0 | 10 years |
| Horizon Season 1980 Episode 16 – Moving Still | | 0 | 10 years |
| Horizon Season 1980 Episode 15 – The Other Kenya | | 0 | 10 years |
| Horizon Season 1980 Episode 14 – Little Boxes | | 0 | 10 years |
| Horizon Season 1980 Episode 13 – Beyond the Milky Way | | 0 | 10 years |
| Horizon Season 1980 Episode 12 – Invasion of the Virions | | 0 | 10 years |
| Horizon Season 1980 Episode 11 – Goodbye Gutenberg | | 0 | 10 years |
| Horizon Season 1980 Episode 10 – Magnet Earth | | 0 | 10 years |
| Horizon Season 1980 Episode 9 – Portrait of a Poison | | 0 | 10 years |
| Horizon Season 1980 Episode 8 – Encounter With Jupiter | | 0 | 10 years |
| Horizon Season 1980 Episode 7 – Cash From Trash | | 0 | 10 years |
| Horizon Season 1980 Episode 6 – The Big If… | | 0 | 10 years |
| Horizon Season 1980 Episode 5 – Cancer Detectives of Lin Xian | | 0 | 10 years |
| Horizon Season 1980 Episode 4 – A Sporting Chance | | 0 | 10 years |
| Horizon Season 1980 Episode 3 – Cleared For Takeoff | | 0 | 10 years |
| Horizon Season 1980 Episode 2 – You Are Old, Father William | | 0 | 10 years |
| Horizon Season 1980 Episode 1 – The Ghost Of The Amoco Cadiz | | 0 | 10 years |
