Sushi Tetsu opened on Monday night in the very tiny premises formerly occupied by Passage Cafe on Jerusalem Passage in Clerkenwell (next door to the Dove Belgian bar). It's owned and run by Toru Takahashi and his wife. Toru was sushi chef at Nobu for five years before leaving to open his own place.
I don't want to burden them with massively inflated expectations, but this was the closest thing to the Yasuda experience I've found in London. Toru served up piece after piece of top class sushi whilst keeping up a patter on Belgian beer, bossa nova (Astrud v. Bebel Gilberto), blues (Does Johnny Winter hate Japanese people? Why Bobby Bland isn't really blues) and the relative merits/demerits of various sushi restaurants in London and further afield (in fact he namechecked Yasuda as an influence).
It's a more classical sushi bar than Sushi of Shiori (which I also very much like). No hot food, no miso. Just sashimi, nigiri and maki. It's a true sushi omakase experience, one piece of nigiri at a time, the meal developing its own flow, its own momentum. It is quite traditional, occasional use is made of a blowtorch but not to the extent it is used at Yashin. The torch giving an effect not unlike the grill used by Masa in Tokyo.
In the end, of course, this is London. Billingsgate is not Tsukiji. The fish is not quite at the level of Yasuda or Kuruma (who can import directly from Tokyo) not to mention the Tokyo heavyweights. But it's very, very good and it's prepared with immense skill and passion.
This was a hugely encouraging first meal (all the better for it being 400 yards from my front door). I suspect the London sushi scene has a new contender.