Alistair Turner and Anthony Coates-Smith were the first entrepreneurs to appear on Dragons' Den who become millionaires.

Their business, Igloo Thermo Logistics, was valued at some £4m only a matter of months after 'dragons' Richard Farleigh and Duncan Bannatyne gave them £160,000 cash for a 22.5% stake.

Their company delivers chilled and frozen foods for the likes of Marks & Spencer and pharmaceutical firms. They have opened a new centre in Leeds and are significantly expanding their original Watford base.