Felix Dennis net worth: Felix Dennis is a British philanthropist and publisher who has a net worth of $300 million. Felix Dennis gained his net worth by owning his own company, Dennis Publishing in the United Kingdom. Born in Kingston-upon-Thames in 1947, Dennis left Harrow College of Art, to play in R&B bands. But his career beginnings have nothing to do with music as he first started making money as a street seller for the underground counter culture magazine Oz in 1971. Soon being promoted to co-editor of the magazine that was a mixture of left-field stories, discussions of drugs, sex and contentious political stories, got imprisoned the same year. Once he was released on appeal, Dennis established his own magazine publishing company called Dennis Publishing in 1973 and made millions with his pioneer computer and hobbyist magazine in the mid 1980s. Today, Dennis Publishing still exists as a privately owned company with headquarters in London and New York City. Most recently, the company has added lifestyle titles such as its flagship brand The Week, among the already existing ones Auto Express, Maxim, Men's Fitness and Computer Shopper. In addition to publishing, Dennis also was a poet having penned two collections of poetry, A Glass Half Full and Lone Wolf. He also loves to plant trees and spend time in his homes in Warwickshire, London, New York, Connecticut and the Caribbean island of Mustique.