When a club like Ronnie Scott's can no longer support accomplished jazz players nd relegates them to the free jam session then there is a serious state in the Jazz world.
The problem is pretty straight forward Jazz was the instigator of popular dance music and over the years it has spread into other areas and basically forgotten its roots.
In a development period in the 60's and 70's Jazz moved into a more esoteric role - profound as this was it moved away from the basic tenant of Jazz - as a dance music.
But it is false to ignore these developments such as be-bop tries to do - it has to be absorbed and developed and not seen as a source of schism popular with the jazz followers especially in Britain.
General Slocombe is in the process of developing the Revolutionary Jazz for our times.