The owners of the two high street restaurant chains of Café Rouge and Bella Italia have fallen into administration amid the pandemic.
Out of the outlets 91 have immediately closed, with 1,900 out 6,000 staff have lost their jobs.
The company appointed Alix Partners as administrators, who are seeking to offers for all or part of the remainder of the business.
Chief executive James Spragg said, “After reviewing all our options with advisers, it became clear that we needed to take this action in order to protect the business and secure the best possible future for Casual Dining Group as we look to conclude a potential sale.
“We are acutely aware of our duty to all employees and recognise that this is an incredibly difficult time for them.
“Working alongside the administrators we will do everything we can to support them through this process with a view to preserving as much employment as we are able to.”
Administrator Clare Kennedy, from Alix Partners said, “We appreciate that this is an extremely difficult time for all those associated with Casual Dining Group.
“Our immediate priorities are to assist those whose employment has been affected by today’s announcement and to secure a sale for the group in order to protect jobs and provide the Group’s much-loved brands with a sustainable platform for the future.”