Sir Stelios Haji-Ioannou, who actually prefers to be called Stelios, is undoubtedly one of Europe's most successful entrepreneurs. 

He launched easyJet when he was 28 and since then has gone on to launch 16 more very successful companies under the easyGroup umbrella.  In November 2006, at the age of 39, Stelios received a knighthood from Queen Elizabeth II for services to entrepreneurship.

Not only is Stelios a "Serial Entrepreneur", he is also deeply involved in many philanthropic projects as a way of giving back.