Hana Group, the Sushi Gourmet operator, has been acquired by global private equity firm Permira for an undisclosed sum.

The global fresh sushi retailer, which trades via kiosks in supermarkets, has spent the past four years under the ownership of TA Associates.

Sushi Gourmet is partnered with Sainsbury’s in the UK and operates in more than 50 locations.

Hana operates across 900 points of sale in grocery retailers across its 12 markets, which also include Spain, Italy and Portugal.

Hana Group chief executive, Yann Coleou said: “The management team is very pleased to welcome the Permira funds as a new investor. This signals a new stage in Hana’s growth.

“I am confident that Permira’s involvement will be beneficial for our clients, customers and our team.”

This month, Hana Group launched a new Mexican food concession, branded El Luchador, in Sainsbury’s Balham, South London, store and has worked with them on food market kiosks for Wok Street and Little India Kitchen at its Selly Oak, Birmingham store.

Tara Alhadeff, principal in Permira’s global consumer team, said: “Global demand for sushi is growing, driven by consumers’ demand for healthy and convenient meals. At the same time, retailers are looking to introduce more theatre and experience into their stores.

“With its in-store chefs preparing fresh sushi, Hana addresses both of these trends. We believe that Hana’s relentless focus on innovation, customer service and consumer experience, will continue to fuel growth and increasingly strategic collaboration with retail partners.”