The celebrity chef, who launched the Italian restaurant group nearly two years ago now, currently operates seven outlets in the South of England and Cardiff.
He is set to open an eighth restaurant in Cambridge next month as well as a restaurant in Reading, Berkshire, in March.
Jamie's Italian will launch its first site in the North, with the opening of a restaurant in Leeds in April, and will make its Scottish debut in Glasgow in May.
A flagship restaurant in London is set to launch in the summer in a site located at St Martin's Courtyard in Covent Garden.
Jamie Oliver launched the first Jamie's Italian restaurant in Oxford in spring 2008 and has garnered wide critical acclaim for its authentic Italian menu at affordable prices.
In addition to the UK operations, Oliver is expanding Jamie's Italian to Asia. Hong Kong-based Tranic Franchising has partnered with Oliver's company to roll the concept out across the continent, with the first restaurant to launch in Hong Kong in the first half of this year.
Separately, Oliver has unveiled the name of his forthcoming restaurant venture with US chef and barbecue enthusiast Adam Perry.
Barbecoa will launch at the One New Change retail development in the City in October this year.
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