He founded Penthouse in 1965, but circulation has tumbled with competition from internet pornography. From a high of five million, it now sells 650,000 copies a month. General Media, the company that owns Penthouse, said last week that it would be unable to meet £10million debts this year. If it fails to keep up payments on a £40 million overdraft, the Bank of New York will take control and may well close the magazine.