Graham Collier had a major influence on British jazz, being one of the first contemporary jazz composers to write extended works for a large ensemble, and one of the first jazz people to receive commissions and tours funded by the Arts Council. He also played an important role in the development of the Loose Tubes Big Band of the 1980s which came out of a big band workshop that Graham ran at the time. He also established the Jazz Course at the Royal Academy of Music in London and and many of the key jazz musicians of the 2000s are graduates of that course.
http://www.grahamcolliermusic.com/recordings/MidnightBlue/