UK musician and producer from London.
He starts his career in late 60s in the psych group Cardboard Orchestra. At the beginning of the 70s Bonsor formed Zior and Monument (Zior under a different name) that over the years are become two well-known cult band of the golden age of heavy progressive. After the break-up of Zior he formed The Bear Brothers, a studio-project act. Afterwards he begins to work as producer in various musical genres including Reggae.