8. Fraser Doherty

Fraser Doherty, at 14, began making jam from fruit and juices, based on his grandma’s recipe. He learned making jams while experimenting in his parents’ kitchen. He used to sell these to friends and fellow churchgoers, but the demand for his jams grew fast, which actually was outstripping his ability to produce.

The flavor of Doherty’s jam has spread rapidly and virtually reached every grocery chain in the U.K. and Ireland, including Sainsbury, the biggest UK retailer. His product, SuperJam, comes in a wide range of unique flavors, including blueberry, blackcurrant, rhubarb and ginger.

He started this business with a loan of $9,000 from a bank. Later it multiplied and reached to 300 stores across U.K. by 2008. He had made assets worth $1-$2 million.