Gregg Wallace is the co-presenter of MasterChef and a successful vegetable grower who supplies many large restaurants in London with fresh produce from his farm.
Born in Peckham, he started out as a London market trader on a vegetable stand in Covent Garden's vegetable market.
In 1989 he started George Allan's Greengrocers, a company that built up to an eventual turnover of £7.5m and, as a result of his knowledge of the fruit and vegetable industry, he was invited to co-present Veg Talk on BBC Radio 4 in 1997.
In 2002, Gregg presented BBC's Saturday Kitchen and is presently writing a monthly column for Good Food and Olive magazine, as well as running a direct mail-order service from his farm.
He is a keen food historian, loves cooking for his kids and now runs his company from Secretts Farm in Surrey.
What's Really In Our Food was broadcast from Monday 26 to Friday 30 November 2007 at 0915 GMT on BBC One.