He is currently presenting James Martin’s American Adventure, an ITV show.
His current work also includes Saturday Morning with James Martin on the same channel.
Previous to this, he presented BBC series Saturday Kitchen between 2006 and 2016.
He has been in a long term relationship with girlfriend Louise Davies, a PA, since 2011.
He previously dated Barbara Broccoli, a producer of James Bond films, but they split in 2005.
James Martin’s weight loss was recently revealed, as he shrunk from 19st 7lb to 14st.
The chef was born in Malton, Yorkshire on June 30 1972, and attended Malton School.
He was born into a family of farmers on the Castle Howard estate, and began cooking through helping his mother in the kitchen.
At the age of 22, he started the Hotel du Vin in Winchester as the head chef.
His first television appearance was in 1996, on shows such as Ready Steady Cook and Big Breakfast.
But what is James Martin’s net worth?
The chef’s fortune is made up of his paid television work as well as his cookbook sales.
He had written a number of books, including most recently Home Comforts.
His net worth is believed to be around $5 million (£3.6 million), according to Wealtholino.
How does this compare to other chefs such as Jamie Oliver’s net worth?
Jamie Oliver is a world famous British chef known for his recipes, and his campaigning for healthier food in UK schools.
The 42-year-old from Clavering, has also produced a number of best sellers, including the Naked Chef and Jamie’s 30-Minute Meals. Can you guess what he is worth?