Jamie Oliver. James Trevor "Jamie" Oliver, MBE (born 27 May 1975) is a British chef, restaurateur, media personality, known for his food- focused television shows, cookbooks and more recently his campaign against the use of processed foods in national schools. He strives to improve unhealthy diets and poor cooking habits in the United Kingdom and the United States. Oliver's speciality is Italian cuisine, although he has a broad international repertoire.