Brothers Charlie and Harry Thuillier knew they were onto something when they came up with the idea of creating an indulgent treat that wasn't bad for the waistband.
They had so much faith in their low calorie ice cream product that they went on BBC's Dragon's Den to ask them to make an investment – which they all turned down.
This is something the dragons no doubt regret now, as the Oppo Brothers ice cream brand went on to triple in value and is now sold in 9,000 stores across most of Western Europe and some parts of the Middle East.
