Koya, located on Frith Street in Soho often has queues out the door. But not to worry, it moves quickly. Have your handmade udon noodles hot or cold, with mackerel or greens and blonde wood communal tables.
There are also delicious croquettes, lightly battered quick-fried vegetable tempura and a Japanese take on the British classic fish & chips. Prices are reasonable by London standards.