Best sushi I ever had hands down. The fish is made super fresh, quick, and the service is amazing. It's a little store on the corner of a beautiful street with cute music playing making it a perfect date spot. Definitely visit!

Came by here for lunch, they have some good lunch specials here and food was good. Service was also attentive. Prices were also decent.

This place was great. Not your typical sushi combinations but well worth it. The apps were fantastic, we would go back. It is a small place so on a busy night to will need a reservation.

We were seriously blown away by the rolls we had here. The spider roll and red dragon roll. HELLOOOO WHAT IS THIS?! It's good sushi. Yum.

This whole food court blew us away. I'm not sure if we missed it on our last visit to London a few years ago or if it is new. Anyway, we were certainly playing the tourist part when we arrived at the food court. We had our phones out checking Yelp for some help in making a dinner choice. All of the restaurants in the court got good reviews but we were leaning towards some Japanese food this night. Good choice! We did not have reservations which would be a good bet a little later in the evening. So, we were told to come on in if we were OK with giving up our table in 90 minutes. No problem, we did not expect to need that much time. Anyway, the service and the food were excellent. We agreed we would put this on our places to try on our next visit to London. It was mostly local folks and is definitely not a tourist trap.

I went today with a friend after having decided against several other small restaurants -- and there are plenty -- on Regents Park Road. I'm so glad I decided on this place, because I would wholeheartedly recommend Oka to anyone else who likes Japanese food. The standout dish for me was actually not my main dish, the bulgogie beef -- which, don't get me wrong, was still great! -- but, in fact, my starter, the beef teppanyaki, which was so savory that my dining companion and I wished we could order two -- per person! I swear, I would go back for that alone! (The waiter even said that that dish is very popular. I totally see why.) My friend had the squid and two different plates of sushi (whose names I can't remember, but I think one was eel?) She had nothing but good things to say about each. The service was VERY good, and our waiter was patient, engaging, and friendly. I only wish I had caught his name so I could recommend him personally! The atmosphere is nice, too -- it's a small café with exposed brick and mood lighting. All in all, this was a lovely experience, and I'm surprised it isn't better reviewed on here. We had an excellent time!

A little surprised by the other reviewers, although am guessing that they want to keep this small establishment a secret that remains "on top of the hill". The ultimate meaning of Oka. I went to this restaurant as a further celebratory week of getting older again. I was surprised at the great value for money, especially in Primrose Hill. The food was above average with some nice variations on the . Long dishes were used for and although this did not provide a specific look that one expects it managed to adjourn some grandeur to the meal. They unfortunately did not have any fatty sashimi, although the sashimi was ample and tasty. I was unable to eat the chocolate dessert as it was sickly sweet like a cookie from tescos. Although this did not stop my friend from devouring it. On top of this a rather reasonably priced bottle of riesling, which was refreshing. Although I would have preferred a carat of saki. They unfortunately didn't provide me with the saki list and I therefore forgot about it. Oh well, next time I will try and recall my poison of choice. Other than that, as this restaurant is so small, I hope noone is reading my review. X