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| Artist | Title | Format | Label | Sleeve/Vinyl | Price GBP | |||
| O'jays | 992 Arguments | 7" | CBS | Not Graded/Very Good (VG) | £1.25 | Info | Buy | |
| O'jays | I Love Music | 7" | Philadelphia International Records | Generic/Good Plus (G+) | £1.00 | Info | Buy | |
| O'jays | In Philadelphia | LP | Epic | Very Good (VG)/Near Mint (NM or M-) | £3.99 | Info | Buy | |
| O'jays | Time To Get Down | 7" | CBS | Not Graded/Very Good Plus (VG+) | £3.00 | Info | Buy | |
 | Objayda | More Tea Vicar? | 12" | Burning Ice Records | Very Good (VG)/Mint (M) | £7.50 | Info | Buy |
 | Oc Smith | La La Peace Song | LP | CBS | Very Good (VG)/Near Mint (NM or M-) | £4.50 | Info | Buy |
 | Ocean | Give Tomorrow's Children One More Chance | LP | Kama Sutra | Very Good (VG)/Very Good Plus (VG+) | £4.50 | Info | Buy |
 | Oceanic | Ignorance | 12" | Dead Dead Good | Generic/Very Good Plus (VG+) | £1.25 | Info | Buy |
| Odyssey | Going Back To My Roots | 7" | RCA, RCA | Not Graded/Very Good (VG) | £2.25 | Info | Buy | |
| Odyssey | Inside Out | 12" | RCA, RCA | No Cover/Very Good (VG) | £1.50 | Info | Buy | |
| Odyssey | Lucky Star | 12" | RCA Victor, RCA Victor | Very Good (VG)/Very Good (VG) | £1.00 | Info | Buy | |
 | Of Cabbages & Kings | Of Cabbages And Kings | 12" | Purge/Sound League | Very Good (VG)/Near Mint (NM or M-) | £14.50 | Info | Buy |
 | Ohio Players | Everybody Up | 12" | Arista | Generic/Very Good Plus (VG+) | £3.00 | Info | Buy |
 | Ohio Players | Fire | 7" | Mercury | Not Graded/Good Plus (G+) | £1.00 | Info | Buy |
 | Ohio Players | Graduation | LP | Air City Records | Good Plus (G+)/Very Good Plus (VG+) | £11.00 | Info | Buy |
 | Ohio Players | Jive Turkey (Part 1 / Streakin' Cheek To Cheek) | 7" | Mercury | Generic/Very Good Plus (VG+) | £3.00 | Info | Buy |
| Ohio Players | O-H-I-O | Cassette | PolyGram Special Products | Very Good Plus (VG+)/Very Good Plus (VG+) | £7.00 | Info | Buy | |
 | Old People Are Mad | Trust | 7" | Wrinkley Records | Very Good Plus (VG+)/Near Mint (NM or M-) | £3.50 | Info | Buy |
 | Oldland Montano | Just A Game | 12" | Siren (3) | Very Good (VG)/Very Good (VG) | £1.00 | Info | Buy |
 | Oliver Sain | London Express | 7" | Contempo | Not Graded/Near Mint (NM or M-) | £5.50 | Info | Buy |
| Olu Rowe | Living Free | 12" | 10 Records, 10 Records | Very Good (VG)/Very Good Plus (VG+) | £1.00 | Info | Buy | |
| Olympia | Flamingo | LP | EMI | Near Mint (NM or M-)/Near Mint (NM or M-) | £11.00 | Info | Buy | |
 | Olympic Runners With George Chandler | Whatever It Takes | 12" | RCA Victor | Generic/Very Good Plus (VG+) | £1.99 | Info | Buy |
| Omar | Don't Mean A Thing | 12" | Talkin' Loud, Talkin' Loud, Kongo Dance, | Very Good (VG)/Very Good (VG) | £1.00 | Info | Buy | |
 | Once More | Stress Conference | LP | Harvest | Very Good Plus (VG+)/Near Mint (NM or M-) | £11.50 | Info | Buy |
 | One Way Featuring Al Hudson | Now That I Found You (Special US Disco Mix) | 12" | MCA Records | Very Good (VG)/Very Good Plus (VG+) | £2.00 | Info | Buy |
 | Onionhead | Ming | 12" | Fairweather Recordings | Very Good (VG)/Very Good Plus (VG+) | £3.50 | Info | Buy |
| Onset | What Say You | 12" | Furious Fish Records | Good Plus (G+)/Near Mint (NM or M-) | £3.50 | Info | Buy | |
| Opaz Featuring Ray Hayden | I Don't Want It | 12" | Opaz Records | Very Good (VG)/Very Good Plus (VG+) | £1.50 | Info | Buy | |
| Opaz Featuring Ray Hayden | I Don't Want It | 12" | Opaz Records | Very Good (VG)/Near Mint (NM or M-) | £2.50 | Info | Buy | |
| Operation | The Jack Horner 12" | 12" | Capo (5) | Near Mint (NM or M-)/Mint (M) | £1.75 | Info | Buy | |
 | Opposition | Stranded | 12" | Charisma | Very Good Plus (VG+)/Very Good Plus (VG+) | £3.50 | Info | Buy |
| Orange Juice | Flesh Of My Flesh | 7" | Polydor, Black Records (25), Polydor | Generic/Near Mint (NM or M-) | £4.50 | Info | Buy | |
| Orchestral Manoeuvres In The Dark | Souvenir (Extended) | 10" | Dindisc, Dindisc | Very Good (VG)/Very Good Plus (VG+) | £5.00 | Info | Buy | |
 | Orlando | Magic E.P | 7" | Blanco Y Negro | Very Good (VG)/Near Mint (NM or M-) | £0.99 | Info | Buy |
| Orpheus | Jerusalem | 12" | Monarch | Very Good (VG)/Very Good (VG) | £2.50 | Info | Buy | |
| Orphy Robinson | The Funky End Of Things | 12" | Blue Note, Blue Note | Very Good Plus (VG+)/Near Mint (NM or M-) | £1.75 | Info | Buy | |
 | Orquesta Revé | La Explosion Del Momento! | LP | Real World Records | Very Good (VG)/Very Good Plus (VG+) | £4.50 | Info | Buy |
| Orson Family | Bugles, Guitars, Amphetamines | LP | Criminal Damage Records | Good Plus (G+)/Very Good Plus (VG+) | £5.50 | Info | Buy | |
 | Oscar Gaetan | Space (Part 1) | 12" | Future Groove | No Cover/Near Mint (NM or M-) | £4.00 | Info | Buy |
 | Oscar Gaetan | Space (Part 2) | 12" | Future Groove | No Cover/Near Mint (NM or M-) | £4.00 | Info | Buy |
 | Oscar Peterson | Girl Talk | LP | Polydor | Very Good (VG)/Very Good Plus (VG+) | £8.50 | Info | Buy |
| Oscar Pettiford Sextet | Charles Mingus Presents Oscar Pettiford Sextet Vol. 2 | 10" | Swing (3) | Very Good (VG)/Very Good Plus (VG+) | £49.49 | Info | Buy | |
 | Osibisa | Living Loving Feeling | 7" | Bronze | Not Graded/Very Good Plus (VG+) | £3.00 | Info | Buy |
 | Osiris | War On The Bullshit | 12" | Baad! Records | Very Good Plus (VG+)/Very Good Plus (VG+) | £7.50 | Info | Buy |
| Ossie Scott | Many Moods Of Ossie Scott | LP | Duke Reid (2), Duke Reid (2) | Good Plus (G+)/Very Good (VG) | £4.50 | Info | Buy | |
 | Otto Waalkes | Der Ostfriesische Götterbote | LP | Rüssl Räckords | Very Good Plus (VG+)/Near Mint (NM or M-) | £1.99 | Info | Buy |
 | Out Of Character | Give Me More | 12" | DJ Therapy | Very Good Plus (VG+)/Near Mint (NM or M-) | £4.00 | Info | Buy |
 | Outsidaz | Keep On | 12" | RuffLife Records | Very Good Plus (VG+)/Near Mint (NM or M-) | £2.25 | Info | Buy |
 | Outside | Big City | 12" | Dorado | Generic/Very Good Plus (VG+) | £2.00 | Info | Buy |
 | Outskirts | Down | 12" | Glass Records (2) | Very Good Plus (VG+)/Very Good Plus (VG+) | £2.50 | Info | Buy |
| Outskirts | Too Bad | 7" | Glass Records (2) | Very Good Plus (VG+)/Near Mint (NM or M-) | £3.50 | Info | Buy | |
 | Ova | Possibilities | LP | Stroppy Cow Records | Very Good (VG)/Very Good (VG) | £5.00 | Info | Buy |
 | Oven | Fanny Hill - Original Music From The Film | LP | Canyon Records (3) | Very Good Plus (VG+)/Near Mint (NM or M-) | £8.50 | Info | Buy |
 | Overweight Pooch Featuring Ce Ce Peniston | I Like It | 12" | A&M PM, A&M Records | Good Plus (G+)/Very Good Plus (VG+) | £1.25 | Info | Buy |
| Owen Gray | Green Grass Of Jamaica | 12" | Sapphire (3) | Generic/Near Mint (NM or M-) | £5.50 | Info | Buy | |
 | Owen Gray | Hit After Hit After Hit - Vol. 2 | LP | Carib Gems | Good (G)/Very Good Plus (VG+) | £3.50 | Info | Buy |
