He provided The Daily Telegraph's expert answer service for computer users.
He has written for a wide range of print and electronic media including national daily newspapers, magazines and websites.
His books include volumes one to four in the Boot Up series on personal computers, and numerous handbooks and guides to consumer technology.
He currently lives in South London with his "long-suffering partner, mentor, co-director and website workhorse" Jane, and their two children, Katie and Alex.
He has developed what he humorously calls an "unhealthy obsession" with 1960s technology, including reel-to-reel tape recorders, miniature radio and TV sets, and various old telephones, clocks and barometers.