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 In | Comedy panel game |
| Odd One Out | Quiz, general knowledge |
| O Dro I Dro | Regional (Wales) quiz |
| Off By Heart | Variety, recital |
| Office Monkey | Stunt/dare show |
| Oh, For a Dictionary | Radio, themed quiz (spelling and definitions) |
| Old Flames | Dating |
| The Olympic Game | Sports |
| Once Upon a Time | Panel game |
| The One and Only | Variety |
| One False Move | Quiz, general knowledge |
| O Fan i Fan | Adventure, regional (Wales) |
| On Cue | Radio, Panel game |
| On the Air | Radio, themed quiz |
| 100 Grand in 100 Minutes | Radio, Lifestyle |
| 101 Ways to Leave a Gameshow | Family game show |
| 100% | Quiz, general knowledge |
| One Hundred and Eighty | Sports |
| One Man and His Dog | Lifestyle |
| One Minute Please | Panel game, Radio |
| One of the Family | Panel game |
| One Night Only | Comedy Panel Game, Radio |
| 1001 Things You Should Know | Quiz, general knowledge |
| 1000 to 1 | Children's |
| One to Win (1) | Quiz, general knowledge |
| One to Win (2) | Quiz, general knowledge |
| 1-2-3 Click | Panel game |
| 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 Stage | Radio, themed quiz (theatre) |
| 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 |
| Opera Quiz | Radio, themed quiz (opera) |
| Operatunity | Variety |
| Opportunity Knocks | Variety |
| Orange UnsignedAct | Variety, reality |
| Ordinary People | Regional (South West) quiz |
| The Other Boat Race | Sports |
| The Other Half | Dating show |
| Our Survey Said | Documentary |
| Out of Order | Radio quiz, themed (politics) |
| Out of the Box | Quiz, themed (television) |
| Out on a Limb | Quiz, themed (celebrity) |
| Over the Rainbow | Variety, reality |
