I think Incognito came out of the Brit-Funk scene [ Beggar & Co, Light of the world etc..] and became associated with acid jazz when they signed with Giles's Talking Loud label and released "Always There" which became a hit in 1991 [ JTQ actually did a version of that tune on "Do your own thing" in 89/90 which predates the Incog version and has similar horn arrangements ]. Some of the more well known "acid jazz" bands existed a few years before the label such as the Heavies, Push/Galliano, JTQ and Incognito when it was the Rare Groove scene and others came along once Acid Jazz the label was established such as Mother Earth, Corduroy, Sandals and Jamiroquai etc..