| Second Sight | BBC One | drama television series | 2 | 8 |
| Second Thoughts | ITV | sitcom | 5 | 49 |
| Second Verdict | British Broadcasting Corporation | — | — | 6 |
| Secret Army | BBC One | drama television series, war television series | 3 | 43 |
| Secret Britain | BBC One | documentary film | 3 | 7 |
| Secret Dealers | — | — | 5 | 130 |
| Secret Diary of a Call Girl | ITV2 | comedy television series, drama television series, erotic television series | 4 | 32 |
| Secret Fortune | BBC One | game show | 3 | 29 |
| Secret Life of | — | — | — | 6 |
| Secret Life of Toys | Disney Channel | children's television series | 1 | 13 |
| Secret Scotland | Channel 5 | documentary television program, travelogue | 3 | 22 |
| Secret Service | — | — | — | — |
| Secret Smile | ITV | drama television series | 1 | 2 |
| Secret State | Channel 4 | drama television series | 1 | 4 |
| Secret World of Sound | — | documentary television program | 1 | 3 |
| Secrets and Words | — | — | 1 | 5 |
| Secrets from the Sky | — | — | — | — |
| Secrets of Britain | PBS | documentary television program | — | 6 |
| Secrets of Great British Castles | Channel 5 | — | 2 | 12 |
| Secrets of the Castle with Ruth, Peter and Tom | BBC Two | — | 1 | 5 |
| Secrets of the Imperial War Museum | Channel 5 | documentary film | — | — |
| Secrets of the London Underground | U&Yesterday | documentary television program | 4 | 36 |
| Secrets of the Manor House | PBS | documentary television program | — | — |
| Secrets of the Museum | BBC Two | documentary television program | — | — |
| Secrets of the National Trust | — | — | 5 | 24 |
| See Hear | BBC Two | — | 38 | — |
| See It Saw It | BBC One | — | 3 | 39 |
| See No Evil | — | — | 6 | — |
| See You Friday | — | — | — | — |
| See You in Court | BBC One | documentary film | 1 | 6 |
| See You, See Me | BBC Scotland | children's television series | — | — |
| Seekers | ITV | drama television series | 1 | 2 |
| Seesaw | — | — | — | — |
| Sell Me the Answer | — | game show | 1 | 50 |
| Selling Hitler | ITV | docudrama | 1 | 5 |
| Send in the Dogs | — | documentary television program | 2 | 12 |
| Sense and Sensibility | — | — | 1 | 4 |
| Sense and Sensibility | — | historical drama | 1 | 7 |
| Sensitive Skin | BBC Two | sitcom | 2 | 12 |
| September Song | — | — | — | — |
| Serendipity | BBC One | factual television program | — | 10 |
| Serial Killer with Piers Morgan | ITV1 | documentary television program | — | — |
| Serial Killers | — | documentary television program, crime television series | — | — |
| Serious | BBC Children's and Education | — | — | — |
| Serious & Organised | — | — | 1 | 6 |
| Servants | BBC One | — | 1 | 6 |
| Service Information | — | — | — | — |
| Set of Six | — | — | 1 | 6 |
| Seven Ages of Britain | BBC One | documentary film | 1 | 7 |
| Seven Ages of Britain | Channel 4 | — | 1 | 7 |
| Seven Ages of Rock | History | documentary television program | — | — |
| Seven Days That Shook the Spice Girls | — | — | — | — |
| Seven Dials Mystery | Netflix | mystery television series, historical drama | 1 | 3 |
| Seven Dwarves | Channel 4 | documentary television program | 1 | 7 |
| Seven Faces of Woman | ITV | romance film | 2 | 13 |
| Seven Natural Wonders | British Broadcasting Corporation | documentary television program | — | 8 |
| Seven of One | BBC Two | sitcom, anthology series | — | 7 |
| Seven Wonders of the Industrial World | BBC Two | documentary film, docudrama | — | 7 |
| Sex and Shopping | — | — | — | — |
| Sex and the Church | BBC Two | — | 1 | 3 |