Index O
O is for... Out of vision - (Also: OOV) Any situation when the source of the audio track is different to that of the broadcast pictures. For example, while we hear the host reading out the question, we may be seeing a camera shot of the contestants instead – the host is said to be "out of vision".
Shows
| Title | Genre |
| Oblivious | Quiz, general knowledge |
| Odd One Out | Quiz, general knowledge |
| O Dro I Dro | Regional (Wales) quiz |
| Office Monkey | Stunt/dare show |
| Old Flames | Dating |
| The Olympic Game | Sports |
| One False Move | |
| One Minute Please | Panel game, Radio |
| 1 vs 100 | Quiz, general knowledge |
| On Safari (1) | Family game show |
| On Safari (2) | Childrens |
| On the Spot (1) | Quiz, general knowledge |
| On the Spot (2) | Educational |
| On Your Marks | Quiz, academic |
| 100% | Quiz, general knowledge |
| 100% Gold | Quiz, general knowledge |
| One Man and His Dog | Lifestyle |
| 1000 to 1 | Children's |
| One to Win (1) | Quiz, general knowledge |
| One to Win (2) | Quiz, general knowledge |
| One of the Family | |
| Only Fools On Horses | Sport, Reality |
| Oops! | Panel game |
| Operatunity | Variety |
| Opportunity Knocks | Variety |
| The Other Boat Race | Sports |
| The Other Half | Dating show |
| Our Survey Said | Game show documentary |
