Ingram, who received £64 million after the sale of Tempus to WPP last November, is a founder of Genesis Investments. Its first move is to back a management buyout of The Non-League Paper, the Sunday newspaper for supporters of non-league football clubs.
The purchase of The Non-League Paper, which folded in June, is expected to be the first of several investments made by Genesis in the next year. It has about £5 million to invest.
Ingram is also set to re-enter the advertising and media world with the launch of a new venture when his non-conflict clause expires and allows him to compete with WPP. This happens next month.
Earlier this year, Ingram bought his home-town football club Woking Town and became the chairman.
The Non-League Paper has a circulation of about 50,000 and is part of Non-League Media, which also publishes the women's football magazine She Kicks and the Non-League Club Directory.
Ingram said: "I have always been very interested in the development and growth of businesses. Through Genesis Investments I look forward to applying my experience and that of my colleagues to the businesses in which we invest. With Non-League Media, we see a great opportunity to extend the appeal of the paper."
Genesis is also backed by Ashley Martin, the former group finance director of Tempus.