David Taylor's excellent British Modern Jazz website covering the period from the 1940s through to the 1960s can be found here
Roger Farbey's Ian Carrs Nucleus website which covers British Modern Jazz from the mid 1960s to the present day can be found here
The results of the Melody Maker Jazz Polls (British Section) 1960-1974 which were dominated by Tubby Hayes for many years can be found here
You Tube has some great clips from the BBC Jazz Scene and Jazz 625 series.
They can be viewed follows: