Japanese restaurant group Toridoll Holdings Corporation has acquired a 40% stake in Shoryu Ramen for £7m.
Shoryu Ramen was launched by Japan Centre chief executive Tak Tokumine in 2012, specialising in tonkotsu ramen.
The group has been steadily rolling out, with seven sites in London, one in Manchester and an international outpost in its hometown of Hakata.
Tokumine said that the investment would allow the business to continue to grow in the UK.
He added: "This is a very exciting moment for Shoryu Ramen. It has always been my passion to bring an authentic Japanese ramen dining experience to the UK and with the investment from Toridoll Holdings Corporation we will be able to expand on our current offering and increase the number of restaurants and reach of my hometown's speciality.
"I am very much looking forward to working together and learning from their experience in helping our business grow and for the future of Shoryu Ramen and indeed Japanese culture within the UK and beyond."
Last year Tokumine partnered with the Toridoll Corporation and sake manufacturer Gekkeikan to open Sakagura with two-Michelin-starred chef Mitsuhiro Araki.
The restaurant on London's Heddon Street is based on southern Japanese recipes, or ‘washoku', meaning "the food of Japan".
The Toridoll Corporation operates some 1,000 restaurants in 27 countries.
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