Celebrity chef Jamie Oliver said he was "devastated" over the move and tweeted to express his sadness, thanking those who "put their hearts and souls into this business over the years".
On Tuesday, officials at KPMG released a list of 22 branches closing with immediate effect.
The three remaining restaurants to stay open will continue to trade but could also be at risk if no buyer is found for the business.
Other restaurants in Oliver's empire that have also closed include Barbecoa and Hoxton.
Here we list the restaurants that have been shut down and where you can find the trio of Jamie's Italians that will still be open.
Jamie’s Italian restaurants that are set to close:
London (Covent Garden)
London (London Bridge)
London (Westfield White City)
London (Westfield Stratford)
Other closures from Oliver's restaurant empire:
Barbecoa (One New Change shopping centre, London)
Fifteen (Hoxton, London)
Restaurants that are still trading:
Jamie’s Italian (Gatwick North, London)
Jamie’s Italian Coffee Lounge (Gatwick North, London)
Jamie Oliver’s Diner (Gatwick South, London)
Restaurants unaffected by the administration process:
Jamie Oliver’s Fifteen Cornwall and Jamie’s Italian International are also still trading and have not been part of the administration process.