Find Band
| oatea | peterborough | progressive |
| Objayda | Dorking | rock |
| OBLIVIOUS | Sudbury | rock |
| Octavepussy | Holland | funk |
| Ode to Eternity | rock | |
| Off The Record | Berkshire | blues |
| Official Receivers Soul Band | soul/funk | |
| Ohm | ||
| Ola | jazz | |
| Old Blue Moses | rock | |
| Old Blue Moses | Farnham | blues |
| Old Firm Derby | indie | |
| Oli Brown Band | . | blues |
| Omar & The Howlers | blues | |
| Omer Makassa | world music | |
| On Fire | chichester | rock |
| On The Edge | soul | |
| On the Road | ||
| On This Day | ||
| Oncoming traffic | ||
| One Day Down | London | funk |
| One Eye Green | rock | |
| One Jump Ahead | London | swing |
| One of Use | ||
| One Step Behind | tribute | |
| One Step Below | tribute | |
| one way street | gravesend | blues |
| One Weird Fish | ||
| Oneyesblue | rock | |
| Opaque | indie | |
| Open mic night | ||
| Open mic special | ||
| Open mike folk night | Dorking | folk |
| OPIUM | PLymouth | rock |
| Optimus Crime | Swindon | indie |
| Orchestre Pyramide | Poole | cover |
| OrientXpressBand | Redhill/Reigate/ | cover |
| Original Score | Coatbridge | indie |
| Ornakay | rock | |
| Orwell Music | ||
| Otis Grand | blues | |
| Out Patients | ||
| outcry | sompting | rock |
| Outer Circle | ||
| Outlandish | Denmark | world music |
| Owsley sunshine | Lincoln | indie |
| OXB band | Outwood | cover |
| Oxbow | alternative |