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 |
| The Object in Question | Panel game |
| 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 |
| Once Upon a Time | Panel game |
| The One and Only | Variety |
| One False Move | |
| O Fan i Fan | Adventure, regional (Wales) |
| 100 Grand in 100 Minutes | Radio, Lifestyle |
| 100% | Quiz, general knowledge |
| 100% Gold | Quiz, general knowledge |
| One Man and His Dog | Lifestyle |
| One Minute Please | Panel game, Radio |
| One of the Family | Panel game |
| One to Win (1) | Quiz, general knowledge |
| One to Win (2) | Quiz, general knowledge |
| 1000 to 1 | Children's |
| 1 vs 100 | Quiz, general knowledge |
| Only Connect (1) | Radio, panel game |
| Only Connect (2) | Puzzle |
| Only Fools On Horses | Sport, Reality |
| On Safari (1) | Family game show |
| On Safari (2) | Childrens |
| On The Ball | Sport, regional (North West England) |
| On the Spot (1) | Quiz, general knowledge |
| On the Spot (2) | Educational |
| On The Spot (3) | Sport, childrens |
| On Your Marks | Quiz, academic |
| Oops! | Panel game |
| Operatunity | Variety |
| Opportunity Knocks | Variety |
| Ordinary People | Regional (South West) quiz |
| The Other Boat Race | Sports |
| The Other Half | Dating show |
| Our Survey Said | Game show documentary |
| Out of Order | Radio quiz, themed (politics) |
| Out of the Box | Quiz, themed (television) |
| Out on a Limb | Quiz, themed (celebrity) |
