We have been asked a few times if there is a complete OK Jazz discography. To date the most complete one was here http://www.asahi-net.or.jp/~xx3n-di/073-franco/FRANCO-0.html
I have just looked at the website of our friend Stefan at Worldservice and he has shared a wonderful new resource called Afrodisc.com
If you search through this site you can find a great discography of all OK Jazz LP Albums and also there is info on all the singles and E.P.s released on labels that OK Jazz were released on like Ngoma, Decca and EMI.
A wonderful new resource!