His parents, Trevor and Sally Oliver, ran a pub/restaurant, The Cricketers, where he practised cooking in the kitchen with his parents.
Oliver's first job was a pastry chef at Antonio Carluccio's Neal Street restaurant, where he first gained experience with preparing Italian cuisine, and developed a relationship with his mentor Gennaro Contaldo.
Oliver was reported to have admitted that he does not use supermarkets.
He criticised Sainsbury's CEO Justin King when Oliver slammed the "junk" sold by supermarkets that ends up in the lunchboxes of millions of children.
In 2005, Oliver initiated a campaign originally called Feed Me Better to move British schoolchildren towards eating healthy foods and cutting out junk food.
As a result, the British government also pledged to address the issue.
Born and raised in the village of Clavering, Essex, he was educated in London before taking his first culinary engagement at Antonio Carluccio's Neal Street restaurant as a pastry chef.