Television presenter Gregg has featured as an almost permanent fixture on our screens since he first hosted Saturday Morning in 2002.
Despite being best known for his role as culinary judge on much-loved cooking competition series MasterChef, the 57-year-old greengrocer has also been investigating the UK's biggest food production units on BBC Two's Inside The Factory alongside Cherry Healey and Ruth Goodman since 2015.
Now, after almost 20 years in the media spotlight, Wallace has featured in recent headlines for his extreme lifestyle change, as well as his tumultuous relationship history.