Born 1964 in the Midlands to Jamaican parents and raised in South Yorkshire, Dennis cut his teeth at the age of 14 performing with the Doncaster Youth Jazz Assoc. He moved to London and began playing with the National Youth Jazz Orchestra and the legendary all-black big band Jazz Warriors. A charismatic and energetic musician, composer and educator, well known on the British and international jazz scene, and celebrated for his versatility and unique approach to the underrated trombone. Dennis' group Badbone & Co walked off with the BBC's Jazz Award for Best Band 2006 and a year later Dennis achieved the British Jazz Award in the trombone category. "..a groove-based brassman who seamlessly combines fluid improvising with the ability to kick the pulse of a band as irresistibly as a drummer" - The Guardian.