Jamie Oliver’s Australian restaurant group has gone into administration, the Australian Financial Review reports.

Administrators from accounting firm BDO were appointed on Monday, with Jamie’s Italian Canberra closing with immediate effect. Brisbane-based Hallmark Group will take over the remaining Australian franchises in the chain, including Jamie's Italian Adelaide on King William Street.

The collapse comes just 18 months after Oliver stepped in to save his Australian Jamie's Italian restaurants, taking them over after the Keystone Group went into receivership.

In a statement to media, Jamie Oliver Restaurant Group Australia COO Ben Shaughnessy said Hallmark would continue operating the restaurants.

“After a short period of in-house management we are pleased to be partnering with Hallmark,” Shaughnessy said. “The team brings a huge amount of experience and passion for our brand, from collaborating with the key suppliers to our food philosophy, and we look forward to working with them as they develop the Jamie's Italian restaurant offering across Australia.”

It means the remaining restaurants in Brisbane, Sydney, Perth and Adelaide are safe for now; a Hallmark representative told the AFR it’s “seeking new suitable locations for the next Jamie's Italian.”