| O.S.S. | adventure television series | 1 | 26 |
| Oasis | — | 1 | 10 |
| Oblivious | game show | 1 | — |
| Odd Man Out | comedy television series | 1 | 7 |
| OFI Sunday | — | — | 6 |
| Oh Boy! | pop music | — | — |
| Oh No, It's Selwyn Froggitt! | sitcom | 4 | 29 |
| Oh, Mr. Toad | — | 1 | 13 |
| Old Bear Stories | — | 3 | 41 |
| On Assignment | — | — | — |
| On Safari | children's television series | 1 | 7 |
| On Safari | children's television series, game show | 4 | 55 |
| On the Buses | sitcom | 7 | 74 |
| Only When I Laugh | sitcom | 4 | 29 |
| Orlando | thriller television series | 4 | 76 |
| Orm and Cheep | children's television series | — | 26 |
| Orson Welles' Great Mysteries | anthology series | 1 | 26 |
| Out of Sight | comedy television series, children's television series | 3 | 27 |
| Paradise Postponed | — | 1 | 11 |
| Paranoid | crime film | 1 | 8 |
| Pardon My Genie | sitcom | 2 | 26 |
| Pardon the Expression | sitcom | 2 | 36 |
| Paris 1900 | — | — | 6 |
| Parkinson | talk show | 31 | 540 |
| Pass the Buck | game show | 2 | — |
| Password | panel game | — | — |
| Pat & Cabbage | sitcom | 1 | 6 |
| Pay and Display | sitcom | 1 | 6 |
| Peak Practice | drama television series | 12 | 152 |
| Penn & Teller: Fool Us | comedy television series | 10 | 139 |
| Perfect Scoundrels | drama television series | 3 | 18 |
| Phillip Schofield's South African Adventure | — | 1 | 3 |
| Pick Me! | — | 1 | 25 |
| Piece of Cake | — | 1 | 6 |
| Piers Morgan On... | — | — | — |
| Play to the Whistle | — | 3 | 9 |
| Play Your Cards Right | game show | 16 | 248 |
| Playbox | children's television series | 6 | 60 |
| Plaza Patrol | sitcom | 1 | 6 |
| Plebs | comedy television series | 5 | 38 |
| PokerFace | game show | 2 | 14 |
| Police Camera Action! | documentary television program | 14 | 95 |
| Police Surgeon | drama television series | 1 | 12 |
| Poor Little Rich Girls | reality television | — | 6 |
| Pop Idol | singing talent show, music program | 2 | 46 |
| Popstars | reality television | 1 | 13 |
| Popstars: The Rivals | reality television | 1 | 18 |
| Potamus Park | — | — | 75 |
| Prehistoric Park | nature documentary | 1 | 6 |
| Press Gang | drama television series | 5 | 43 |
| Prey | drama television series | 2 | 6 |
| Prime Suspect | drama television series, police procedural | 7 | 14 |
| Primeval | science fiction television series, fantasy television series | 5 | 36 |
| Prize Island | game show | 1 | 6 |
| Professor Bubble | — | — | 65 |
| Professor T. | — | 5 | 24 |
| Protection | crime television series | — | — |
| Prove It! | — | 2 | 26 |
| Public Eye | drama television series | 7 | 87 |
| Puddle Lane | fantasy television program, anthology series | — | — |