O Marley's, The (Irish Folk, 1 gig, based: Exeter)
October Drift (Alternative, 1 gig)
Odyssey Blues & Soul Band (Soul, Blues, Jazz, 12 gigs, based: Walthamstow Central)
Off The Wall (Covers 60s - present, 12 gigs, based: Truro)
Ohasis (Other, 2 gigs)
OJ and The Mojo's (Rock / Blues, 1 gig)
Old Dogz New Trix (Tribute Band, 15 gigs, based: Street)
Old Skool Rox (Rock / Pop, 32 gigs, based: Exeter)
OMJ (Rock and/or Blues and/or Pop, 3 gigs, based: Hertford)
On The Way (Covers - various, 2 gigs, based: Watford)
One Eyed Cats (Rhythm & Blues, 9 gigs, based: Peterborough)
One Night In Dublin (Irish Folk, 1 gig)
Open Mic (Other, 21 gigs)
Open Mic - with The Weathertop Preachers (Various, 11 gigs, based: Chalfont St Giles)
Open Mic with Go tell Alice (Pop / Rock / Jazz / Blues, 41 gigs, based: Newton Abbot)
Opium (Covers, 2 gigs, based: Plymouth)
Originals, The (Modern Covers, 1 gig, based: Bracknell)
Our Friends Electric (Other, 1 gig)
Out Of The Blue (Covers - various, 1 gig)
Out Of The Blues (60s and 70s Rock'n'Roll / Blues, 1 gig)
Out Of The Box (Rock / Pop, 4 gigs, based: Torbay)
Out to Lunch (Rock & Roll, 6 gigs, based: Enfield)
Overtures, The (60s Covers, 2 gigs)
Owes (Original Rock, 1 gig)
Ozzie & The Uglies (Covers - various, 2 gigs)
Total 25