| O'Hooley & Tidow | @ Bar 1:22, Huddersfield |
| O.K. CORRAL, Special Guests | @ The Sugarmill, Stoke-on-Trent |
| Oakdale Middle School Car Boot Sale | @ Poole Adult Education Centre, Poole |
| Oasish, Littlemores | @ The Duchess, North Yorkshire |
| Obscura | @ Underworld, London |
| Obscura, Spawn Of Possession, Gorod, ... | @ MoHo Live, Manchester |
| Obsession, Lisa Pin Up, BK, Andy Farley | @ Scala, London |
| Ockham's Razor: Triple Bill | @ artsdepot, North Finchley |
| Octane OK | @ Barfly, London |
| Octopussy | @ Liquid, Newcastle Upon Tyne |
| Octopussy | @ Arches, Glasgow |
| Odd collective | @ Odd Bar, Manchester |
| Odd Thursday DJ Rotation | @ Odd Bar, Manchester |
| Oddest Saturdays | @ Oddest Bar, Manchester |
| Oedipus | @ Battersea Arts Centre, London |
| Oedipussy | @ Dukes Theatre, Lancaster |
| Oedipussy | @ Nuffield Theatre, Southampton |
| Of Mice & Men | @ Tunnels, Scotland |
| Of Mice & Men, Special Guests | @ The Sugarmill, Stoke-on-Trent |
| Of Mice & Men, Supports | @ Brickyard, Carlisle |
| Of Mice and Men | @ Royal Lyceum Theatre, Edinburgh |
| Of mice and men | @ Theatre On The Steps, Shropshire |
| Of Montreal | @ KOKO, London |
| Off Modern | @ Corsica Studios, London |
| Off the Cuff! Improvised Comedy | @ Upstairs at Three and Ten, Brighton |
| Off The Meters | @ Korsan, London |
| Off The Rails - The 5th Birthday | @ Plug, Sheffield |
| Off The Rails Comedy Club | @ The Royal George, Oldham |
| OFWGKTA | @ Manchester Academy 2 & 3, & Club Academy, Manchester |
| Oh Land | @ Heaven, London |
| Oh So Sunday After Parties | @ Po Na Na, Brighton |
| Oh What A Lovely Recession Every Frid... | @ Peacock Bar, London |
| Oi Polloi | @ Priory, Doncaster |
| Oklahoma! | @ Rhodes Arts Complex & Bishop's Stortford Museum, Hertfordshire |
| Old Herbaceous | @ Artrix, Bromsgrove |
| Old Skool Clubbers Cruise | @ Mersey Ferry, Liverpool |
| Old Time & Modern Sequence Dancing | @ Morecambe Platform, Lancashire |
| Old Time Music Hall | @ Lauderdale House, London |
| Olde Time Religion | @ Zanzibar, Liverpool |
| Olfar, Liz Lawrence, Karen Grace, Rub... | @ The Old Queen's Head, London |
| Oli Brown | @ The Caves, Edinburgh |
| Oli Brown Band | @ The Duchess, North Yorkshire |
| Oliver | @ Motherwell Concert Hall and Theatre, Motherwell |
| Oliver | @ Kings Theatre, Hampshire |
| Oliver! | @ Compass Theatre, Middlesex |
| Oliver! | @ Henrietta Barnett School, London |
| Oliver! | @ Palace Theatre, Manchester |
| Olivia | @ Shirley Social Club, Shirley, Solihull |
| Olivia Sham: Piano | @ South Holland Centre, Lincolnshire |
| Olly Day and the Jonathon Wyatt Big Band | @ Cromer Pier Pavilion, Cromer |
| Olney Farmers Market | @ Market Place, Bucks |
| Olympics 2012 | @ Shirley Social Club, Shirley, Solihull |
| OMFG! U-18 alternative clubnight laun... | @ The New Picket, Liverpool |
| Omid Djalili | @ G Live, Guildford |
| On 22 November 2011, Parasol unit wil... | @ Parasol Unit, London |
| On Golden Pond | @ Yvonne Arnaud, Guildford |
| On Golden Pond | @ Worthing Connaught Theatre, West Sussex |
| On the mic - Open Mic | @ Southsid Bar, London |
| On The Real @ Plan B with DJ Rhettmat... | @ Plan B, London |
| On The Real: Skitz Sticksman Album La... | @ Plan B, London |
| ON THE REAL: with 'The Nextmen' | @ East Village, London |
| On the Rocks | @ The Island Bar, Birmingham |
| On The Twentieth Century | @ Brentwood Theatre, Brentwood |
| On The Waterfront | @ Haymarket Theatre Royal, London |
| On Tour: Chickenshed's Tales from the... | @ Chickenshed Kensington and Chelsea, London |
| Once In A While | @ Excelsior Club, LONDON |
| Once Upon A Time Up The Road | @ The Carriageworks, Leeds |
| One Big Night Out | @ Pure Newquay, Newquay |
| One Day Elliott | @ Nambucca, London |
| One Day in Spring by Various Authors,... | @ Oran Mor Glasgow, Glasgow |
| One Day Like This... Will Change Your... | @ Tacchi-Morris Arts Centre, Taunton |
| One Day, Certificate PG, 107 minutes | @ The Norbury Theatre, Worcestershire |
| One Enchanted Evening | @ Lighthouse, Poole |
| One Fly-over & A Cuckoo's Nest | @ Inn on the Green, London |
| One Foot Cow | @ The Last Days of Decadence, London |
| ONE FOR THE ROAD with DJs | @ Roadhouse, Manchester |
| One Last Thing, 11 Watt, & Estate Acc... | @ John Lyon Hall, London |
| ONE MIC..The Launch ft Babatunde, Jam... | @ Bernie Grant Centre, London |
| One Night of Queen | @ New Theatre Oxford, Oxford |
| One Night Only | @ The Duchess, North Yorkshire |
| One Night Stand Comedy Night | @ Cafe Artisan, Lancashire |
| One Night Stands | @ Blue Posts, London |
| One Plus One: Picture Editing After B... | @ WORK Gallery, London |
| One unique Signal/Caretaker/Commungos... | @ The Cavendish Arms, London |
| One
Thousand
Pots, One... | @ The Brunei Gallery, London |
| Oneglove Feat Modestep | @ Lockside Lounge, London |
| OneTaste | @ Bedford, London |
| Onstage Drama Birthday Parties | @ Kings Theatre, Chatham |
| Oona Hassim | @ Woolff Gallery, London |
| Open Art Surgery | @ Dance City, Newcastle-upon-Tyne |
| Open Call: International Physical The... | @ Unity Theatre, Liverpool |
| Open daily | @ The Observatory Science Centre, Hailsham |
| Open Day | @ Dennis Severs' House, London |
| Open Day, Launch of Theatre Arts Cour... | @ The Kings Centre, Oxford |
| Open Days 2008 | @ Victoria Baths, Manchester |
| Open exhibition | @ JGallery, Northampton |
| Open for Laughs - Open Mic Comedy Night | @ Bar 1:22, Huddersfield |
| Open Meditation Class (Tuesday evening) | @ London Buddhist Centre, London |
| Open Meditation Class (Wednesday even... | @ London Buddhist Centre, London |
| Open Mic | @ The Ram Jam Club, Surrey |
| Open Mic | @ The Barge, Gillingham |
| Open Mic Acoustic Night | @ Finnegan's Wake, London |
| Open Mic and Spoken Word | @ The Half Moon, London |
| Open Mic hosted by LUSH | @ LadyBird, London |
| Open Mic Night | @ Locomotive Inn, North Yorkshire |
| Open Mic Night | @ Comedy Cafe, London |
| Open Mic Night | @ Southern K, London |
| Open Mic Night | @ River Bar and Brasserie, London |
| Open Mic Night | @ Elgins, Cleveland |
| Open Mic Night | @ Yates's, Newport |
| Open Mic Night | @ Spice of Life, London |
| Open Mic Night | @ Balgonie Arms Pub, Glenrothes |
| Open Mic Night | @ Belushi's, London |
| Open Mic Night | @ The Maltings Theatre & Cinema, Berwick-upon-Tweed |
| Open Mic Night | @ The Crown Inn, Chislehurst |
| Open Mic Night | @ Betty Nicols, Fife |
| Open mic night | @ The Carnival, North Lincolnshire |
| Open Mic Night | @ Greyfriars Bar, Perth |
| Open Mic Night | @ The Continental, Preston |
| Open Mic Night | @ The Counting House, Plymouth |
| Open Mic Night | @ The Lansdowne Bar & Kitchen, Glasgow |
| Open Mic Night | @ The Continental, Preston |
| Open mic night | @ The Boatyard, Preston |
| Open Mic Session | @ Belushi's, London |
| Open mic' night | @ Duke of Connaught, Berkshire |
| Open Mic/ No Mic Rehearsal | @ The Railway Tavern, Colchester |
| Open Range | @ INDEPENDENT PHOTOGRAPHERS GALLERY, East Sussex |
| Open Spots | @ Pleasance, London |
| Open Studio | @ Emma Rose Art Works, Wellow, Bath |
| Open Talent Competition | @ Spotlites, Kent |
| Open Winter Stableford | @ Castle Park Golf Course, East Lothian |
| Open-air theatre: Much Ado about Noth... | @ Putney Arts Theatre, London |
| OpenArt | @ The Maltings Theatre & Cinema, Berwick-upon-Tweed |
| Optic Saturday | @ Optic Club, Norwich |
| Oral History | @ Booth Museum, East Sussex |
| Orange Goblin, Grifter, Guests | @ Classic Grand, Glasgow |
| Orchestra Cube: Open Rehearsal | @ The Cube, Bristol |
| Orchestra of the Age of Enlightenment | @ Wiltshire Music Centre, Bradford on Avon |
| Orchestra of the City | @ St James's Church, London |
| Orchestra Platform Seven | @ St James's Church, London |
| Ordinary Days | @ Headgate Theatre, Colchester |
| Organ and Saxaphone Duo | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Andrew Bailey | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Andrew Wyatt | @ St Mary's Church, Melton Mowbray |
| Organ Recital by David Whittle | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Edgars Cuzunskis | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Edward Hewes | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Edward McCall | @ St Mary's Church, Melton Mowbray |
| Organ recital by Eric Singleton | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Geoffrey Clarke | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Geoffrey Gratton | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Ian Major | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Ian Runnells | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Ivan Linford | @ St Mary's Church, Melton Mowbray |
| Organ Recital by James Gutteridge | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Jonathan Gregory | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Keith Hearnshaw | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Keith Morgan | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Ken Ellis | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Simon Headley | @ St Mary's Church, Melton Mowbray |
| Organ Recital by Stephen Power | @ St Mary's Church, Melton Mowbray |
| Organ Recitals | @ Westminster Abbey, London |
| Organised Mike | @ Adelphi, Lancashire |
| Organised Mike @ Black Horse | @ Black Horse Hotel, Preston |
| Origin | @ Underworld, London |
| Original Tea Dance | @ BJ's White Swan, London |
| Orlando - Latin Live Music | @ La Rioja Restaurant, London |
| Orphans | @ South Hill Park, Berkshire |
| Orpheus in the Underworld | @ Nuffield Theatre, Southampton |
| Orton Farmers Market | @ Orton Market Hall, Cumbria |
| Osmosis | @ Rooty Fruity, Birmingham |
| Oswald, Support | @ The Leopard, Doncaster |
| Oswestry Farmers Market | @ Bailey Head, Shropshire |
| Othello | @ Etcetera Theatre, London |
| Other Roads | @ Reeth Memorial Hall, North Yorkshire |
| Otiz Cannelloni's Magical Mayhem | @ Lauderdale House, London |
| Otley Farmers Market | @ The Market, Otley |
| Otters Swimming Club | @ Hayes Pool, Middlesex |
| Ottokraft, Kurt Martinez | @ Nambucca, London |
| Oundle Farmers Market | @ Market Place, Cambridgeshire |
| Oundle General Market | @ Market Place, Cambridgeshire |
| Our Country's Good by Timberlake Wert... | @ artsdepot, North Finchley |
| Our Final Hour, Wasted Bullet | @ Barfly, London |
| Out & About Walks | @ Harrowbarrow and Metherell Village Hall, Callington |
| Out of the Blue | @ Queen's Hall, Cranbrook |
| Out Of The Shadows | @ LMA Stage School, Thurston |
| Outdoor Antiques Market | @ Market Place, Northamptonshire |
| Outdoor Flea Market | @ Chesterfield Market, Chesterfield |
| Outdoor Flea Market | @ Piece Hall, Halifax |
| Outdoor Fleamarket | @ Market Place, Nottinghamshire |
| Outdoor Fleamarket | @ Bulwell Market Place, Nottingham |
| Outdoor Fleamarket | @ Market Place, Hertfordshire |
| Outdoor Fleamarket Market | @ Market Place, Nottinghamshire |
| Outdoor Market | @ Gorton Market, Gorton |
| Outfit | @ Captains Rest, Lanarkshire |
| Outside Edge | @ The Norbury Theatre, Worcestershire |
| Outside Edge | @ Tacchi-Morris Arts Centre, Taunton |
| Outside The Box | @ The Fighting Cocks, Surrey |
| Outward Bound | @ Finborough Theatre, London |
| Over 55s group | @ Sydenham library, London |
| Over 60's Lunch Menu | @ Plough Inn, Leicestershire |
| Over The Moon | @ Favela Chic, London |
| Over the Rainbow | @ Mercury Theatre, Colchester |
| Over the Rainbow - The Eva Cassidy Story | @ Motherwell Concert Hall and Theatre, Motherwell |
| Overdose | @ Po Na Na, Norwich |
| Oxfordshire Gang Show 2012 | @ New Theatre Oxford, Oxford |
| Oxjam: Live at the Roadhouse | @ Roadhouse, London |
| O’Hooley & Tidow, Lucy Ward | @ Cecil Sharp House, LONDON |
