O'Neill's (Pub, 9 gigs, Woking)
O'Neill's (Pub, 1 gig, Oxford)
O'Neill's (Pub, 1 gig, High Wycombe)
O'Neill's (Pub, 6 gigs, Kingston Upon Thames)
O'Neill's (Pub & Food Bar, 13 gigs, Sutton)
O'Neill's (Pub & Food Bar, 5 gigs, Watford)
O'Neill's (Pub & Food Bar, 3 gigs, Maidenhead)
O'Neill's (Pub / Restaurant, 1 gig, Winchester)
O'Shea's Bar & Grill (Pub & Food Bar, 2 gigs, Luton)
Oak View Care Home (Care Home, 8 gigs, Hayling Island)
Oake Manor Golf Club Ltd (Golf Club, 1 gig, Oake)
Oakland Hotel, The (Hotel, 1 gig, South Woodham Ferrers)
Oaklands Park Golf Club (Golf Club, 1 gig, Chalfont St Giles)
Oaksfest (Festival, 1 gig, Plymstock)
Ocean City Blues and Jazz Festival (Festival, 1 gig, Plymouth)
Odd Wheel, The (Pub, 1 gig, Wembury)
Oddfellows Arms, The (Pub, 108 gigs, Hemel Hempstead)
Okehampton Conservative Club (Other, 5 gigs, Okehampton)
Oktoberfest (Open Air Festival, 1 gig, Plymouth)
Old Albanian Rugby Club (Sports Club, 1 gig, St Albans)
Old Anchor Inn, The (Live Music Pub, 6 gigs, Abingdon-on-Thames)
Old Barn Club, The (Club, 2 gigs, Yeovil)
Old Barn Inn (Pub / Restaurant, 1 gig, Bickington)
Old Clee Social Club (Social Club, 1 gig, Grimsby)
Old Dean Bowling Club (Other, 1 gig, Camberley)
Old Ford, The (Outdoor Event, 2 gigs, North Camp)
Old Hall Tavern (Pub, 1 gig, Chingford)
Old Hat, The (Pub & Food Bar, 2 gigs, West Ealing)
Old House at Home, The (Pub, 2 gigs, Milton)
Old Mill, The (Pub & Food Bar, 1 gig, Plumstead Common)
Old Orchard Inn, The (Other, 2 gigs, Week St Mary)
Old Palace, The (Private Function, 1 gig, Hatfield)
Old Pier Tavern, The (Pub, 7 gigs, Burnham-on-Sea)
Old Riverport Jazz & Blues Festival (Festival, 2 gigs, St Ives)
Old School House (Community Centre, 1 gig, Stoke Climsland)
Old Sergeant, The (Live Music Pub, 2 gigs, Wandsworth)
Old Ship Aground, The (Inn / Restaurant, 5 gigs, Minehead)
Old Smithy, The (Pub, 2 gigs, Ivybridge)
Old Ticket Hall (Pub, 10 gigs, Windsor)
Old Transporter Ale House, The (Pub, 1 gig, Henlow)
Olive Limes (Restaurant / Music Bar, 1 gig, Tring)
Oliver Cromwell (Other, 3 gigs, St Ives)
On The Latch (Restaurant / Music Bar, 1 gig, Mayland)
Ongar Sports Club (Sports Club, 1 gig, Ongar)
Oniells (Pub, 1 gig, Maidenhead)
Onslow Arms, The (Pub / Restaurant, 2 gigs, Loxwood)
Ostler Inn (Pub / Hotel, 1 gig, Uffculme)
Ottershaw Social Club (Social Club, 1 gig, Ottershaw)
Total 48