Contemporary Izakaya & Japanese Dining Destination


Our restaurant, located on Mayfair’s prominent Grosvenor Street, is inspired by the nature-spirited roots and duality of Mount Fuji, honouring Japanese traditions and culinary craftsmanship.

Executive Chef Rhys Cattermoul showcases a broad spectrum of Japanese cuisine through delicate umami flavours and responsibly sourced ingredients.

Discover KOYN signatures alongside classic favourites from our sushi bar, robata and kitchen.

KOYN Bulletin


Stay up to date with what’s unfolding soon.

Cosmos Of KOYN


Split over two floors, discover three of our sophisticated dining rooms and izakaya-styled residential drinking den at our Grosvenor Street restaurant.

Our Story


Journey with us as we capture the complementary forces at play in Japan’s most majestic volcano
Journey with us as we capture the complementary forces at play in Japan’s most majestic volcano

Situated off Mayfair’s resplendent Grosvenor square, KOYN is housed in what was formerly both the US Embassy and Canadian High Commission at 38 Grosvenor Street.

Japanese Sushi Restaurant Best Mayfair

OPENING HOURS

RESTAURANT

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

BAR

Monday to Sunday
17:30 - 00:00