A former associate of noted English pop impresario Don Arden, Jeffery was and remains a controversial figure.
[4] He started his career in music as the owner/manager of venues in Newcastle upon Tyne in north east England; the Marimba coffee bar and the Downbeat jazz club.
[5] Jeffery then opened the Club A’Gogo in partnership with Ray Grehan, sales manager for the Automaticket company.
The club hosted concerts by Captain Beefheart, Cream, Fleetwood Mac, The Graham Bond Organisation, Howlin’ Wolf, Jeff Beck, Jimi Hendrix, John Lee Hooker, John Mayall & the Bluesbreakers, Pink Floyd, The Rolling Stones, The Who and The Yardbirds[7] among others.
Despite this success, Jeffery has been openly condemned by members of The Animals, who blame him for the breakup of the band, claiming that he worked the group into the ground and appropriated most of their earnings.
[14] At the time of Hendrix's death, the coroner recorded an "open verdict," stating that the cause was "barbiturate intoxication and inhalation of vomit".
Jimi died an accidental death, but he definitely wasn't murdered – not by Michael Jeffery, his UK manager, and certainly not by anybody connected to him.