I've dined at Sushi Club a handful of times, and their quality is always consistent. It's a bit hidden in Kensington, but once you've found it, you'll be going back for more.
They have a lot of special rolls which are unique. I'd recommend the tuna tataki, which is a must have for my visits.
I'd definitely recommend making reservations, as it's usually busy, and sometimes they run out of dishes, and service can be a bit slow (but worth the wait).