Who is he?
A magazine publisher with the midas touch, whose stable of titles includes Maxim and Auto Express. Dennis, worth pounds 575 million, has come far since the judge in the '71 Oz obscenity trial declared him 'very much less intelligent than his co-defendants'.
How did he earn his millions?
By selling Personal Computer World to VNU in 1982 for pounds 2 million and MacUser US to Bill Ziff for dollars 20 million in 1986.
What's the secret to his success?
An ability to get things done, his fearlessness, his ruthlessness. He also backs hunches. Says Dennis: 'I can't abide people who come to me and say: 'I've got a great idea.' It's the execution that matters.'