| The Sandbaggers | ITV | action television series | 3 | 20 |
| The Sandie Shaw Supplement | BBC One | — | 1 | 6 |
| The Sarah Jane Adventures | CBBC, Domashny, Carousel | fantasy television series, teen drama television, science fiction television series, horror television series | 5 | 53 |
| The Sarah Millican Television Programme | BBC Two | comedy television series | 3 | 20 |
| The Saturday Night Armistice | BBC Two | comedy television series | — | 24 |
| The Saturday Show | Channel 5 | — | 2 | 49 |
| The Saturday Show | BBC One | — | — | — |
| The Saturday Starship | ITV | — | — | — |
| The Savages | BBC One | sitcom | 1 | 6 |
| The Scarf | BBC One | — | — | 6 |
| The Scarlet Pimpernel | BBC One | historical television series, drama television series | 2 | 6 |
| The Scheme | — | documentary film | — | 5 |
| The Sculptress | BBC One | — | — | — |
| The Search | — | game show | — | — |
| The Second Coming | ITV | drama television series, black comedy | 1 | 2 |
| The Secret Cabaret | Channel 4 | — | 2 | 12 |
| The Secret Diary of Adrian Mole | ITV | comedy television series, youth series | 2 | 12 |
| The Secret Kingdom | — | — | — | — |
| The Secret Life of Birds | — | document | — | — |
| The Secret Life of Books | — | — | — | — |
| The Secret Life of Elephants | BBC One | documentary film | — | 3 |
| The Secret Life of Machines | Channel 4 | documentary television program | 3 | 18 |
| The Secret Millionaire | Channel 4 | reality television | 10 | 67 |
| The Secret of Crickley Hall | BBC One | drama television series | 1 | 3 |
| The Secret of Eel Island | Channel 5 | — | 2 | 30 |
| The Secret Service | ATV | science fiction television series, children's television series | 1 | 13 |
| The Secret War | — | documentary television program | — | — |
| The Secrets | — | — | 1 | 5 |
| The Secrets of Quantum Physics | BBC Four | documentary television program, popularisation of science | 1 | 2 |
| The Sentimental Agent | ITV | drama television series | 1 | 13 |
| The Serial Killer's Wife | — | — | — | — |
| The Serpent | BBC One | crime television series, drama television series | 1 | 8 |
| The Seven Stupidest Things to Escape From | Channel 4 | — | — | — |
| The Sex Education Show | Channel 4 | — | 5 | 24 |
| The Sex Inspectors | — | reality television | — | — |
| The Shadow Line | BBC Two | drama television series | 1 | 7 |
| The Shari Lewis Show | NBC | — | — | — |
| The Sharp End | British Broadcasting Corporation | — | — | 8 |
| The Shia Voice | — | television program | — | — |
| The Shiny Show | CBeebies | game show, children's television series | 2 | 91 |
| The Show | — | — | — | — |
| The Show Must Go Online | — | — | — | — |
| The Siege of Golden Hill | — | — | — | — |
| The Silver Chair | — | fantasy television series | — | 6 |
| The Singapore Grip | ITV | — | 1 | 6 |
| The Singer Takes It All | Channel 4 | reality television | 1 | 4 |
| The Singing Estate | Channel 5 | — | — | 4 |
| The Singing Kettle News | ITV | — | 4 | — |
| The Sins | — | police television drama | 1 | 7 |
| The Sitcom Showdown | Gold | game show | 1 | 5 |
| The Sitcom Trials | ITV | — | 1 | 8 |
| The Six Wives of Henry VIII | British Broadcasting Corporation | docudrama | 1 | 6 |
| The Six Wives of Henry VIII | Channel 4, PBS | documentary film, documentary television program | 1 | 4 |
| The Sixth Commandment | BBC One | drama television series | 1 | 4 |
| The Sketch Show | ITV | — | 3 | 16 |
| The Sky at Night | BBC One | documentary television program | — | — |
| The Sky Report | Sky News | — | — | — |
| The Sky's the Limit | ITV | game show | — | — |
| The Slammer | BBC One | — | 6 | 85 |
| The Slow Norris | ITV | fantasy television series | — | 60 |