Kurobuta founder Scott Hallsworth has left membership club Ramusake just months after it opened.
The chef and restaurateur, who runs Kurobuta and Joe's Oriental Diner in London's King's Road, as well as Kurobuta in Kendal Street near Marble Arch, said he would be "parting ways" with Ramusake with immediate effect.
Ramusake, which opened at 92B Old Brompton Road in October 2014, saw the former Nobu head chef join forces with nightclub owners Piers Adam and David Phelps of Mahiki Mayfair and Bodo's Schloss.
Until now, the club and restaurant has been offering a Kurobuta menu devised by Hallsworth, as well as cocktails using sake and premium rum. It charges £250 for an annual membership.
In a statement, a spokeswoman for Hallsworth said: "Scott has very much enjoyed being a part of the launch of Ramusake but moving forward, he will focus on other interests. His two Japanese Izakaya restaurants, Kurobuta in Chelsea and Marylebone and the recent opening of Joes Oriental Diner will remain his main focus. In addition, Kurochan will open at the Mandarin Oriental in Bodrum this year on 1 June."