| 1975 | Horizon Season 1975 Episode 26 – The Trobriand Experiment | | 0 | 10 years |
| Horizon Season 1975 Episode 25 – Meditation and the Mind | | 0 | 10 years |
| Horizon Season 1975 Episode 24 – Cannabis | | 0 | 10 years |
| Horizon Season 1975 Episode 23 – To Die, to Live – The Survivors of Hiroshima | | 0 | 10 years |
| Horizon Season 1975 Episode 22 – Happy Catastrophe | | 0 | 10 years |
| Horizon Season 1975 Episode 21 – The Sickly Sea | | 0 | 10 years |
| Horizon Season 1975 Episode 20 – How Do You Read? | | 0 | 10 years |
| Horizon Season 1975 Episode 19 – The Greatest Advance Since the Wheel? | | 0 | 10 years |
| Horizon Season 1975 Episode 18 – Strange Sleep | | 0 | 10 years |
| Horizon Season 1975 Episode 17 – The Cleanest Place in the World | | 0 | 10 years |
| Horizon Season 1975 Episode 16 – The Three Chord Trick | | 0 | 10 years |
| Horizon Season 1975 Episode 15 – The Glazed Outlook | | 0 | 10 years |
| Horizon Season 1975 Episode 14 – The McMaster Experiment | | 0 | 10 years |
| Horizon Season 1975 Episode 13 – Benjamin | | 0 | 10 years |
| Horizon Season 1975 Episode 12 – The Bulldog’s Last Bark | | 0 | 10 years |
| Horizon Season 1975 Episode 11 – Brain Poison | | 0 | 10 years |
| Horizon Season 1975 Episode 10 – A Spoonful of Roughage | | 0 | 10 years |
| Horizon Season 1975 Episode 9 – Not the Cheapest, But the Best | | 0 | 10 years |
| Horizon Season 1975 Episode 8 – The Overworked Miracle | | 0 | 10 years |
| Horizon Season 1975 Episode 7 – The Long, Long Walkabout | | 0 | 10 years |
| Horizon Season 1975 Episode 6 – Project Fido | | 0 | 10 years |
| Horizon Season 1975 Episode 5 – The Change of Life | | 0 | 10 years |
| Horizon Season 1975 Episode 4 – The Unsafe Sea | | 0 | 10 years |
| Horizon Season 1975 Episode 3 – A Time to Be Born | | 0 | 10 years |
| Horizon Season 1975 Episode 2 – The Killer Dust | | 0 | 10 years |
| Horizon Season 1975 Episode 1 – The Cleanest Place in the World | | 0 | 10 years |
