Japanese Asian Restaurant London Dining Destination

As our contemporary izakaya reaches its first month in service, we want to thank you for all your love and support during our early days.

New restaurant by Condé Nast Traveller is an absolute privilege. We deeply value the patronage given to our Grosvenor Street dining destination, inspired by the nature-spirited roots of Mount Fuji.

Boutique Sushi Bar Japanese Restaurant in London’s Mayfair

As we carefully craft our story, we invite you to experience the cosmos of KOYN through our two distinct yet streamlined spheres: MIDORI and MAGMA.

Stepping into KOYN, on entering our ground floor, you will be introduced to MIDORI.

Embodying the landscape of Japanese zen gardens, with a boutique sushi bar as the dining room’s centrepiece, MIDORI sits alongside our residential KOYN Bar – inspired by the terraces of ancient Japanese homes overlooking Mount Fuji.

As you passage down to the lower ground floor, you will arrive at MAGMA, an immersive subterranean space mirroring the dark volcanic insides of Mount Fuji, featuring a binchotan robata grill and an intimate private dining space.

Restaurant Mayfair Koyn Exterior



Monday to Sunday
Lunch: 12:00 - 14:30
Dinner: 17.30 - 22.45


Monday to Sunday
17:30 - 00:00