We'll be off to London shortly, spending a Sunday and Monday night before heading elsewhere. I'm strongly considering a reservation at St. John B&W, which sounds like it might fit both budget and our preferred restaurant style for a good night out. My husband's actually the fussy one -- he really dislikes the more formal places (his preferred meal if having only one in London is the steak sandwich at The Eagle to which he has become quite addicted, along with a good real ale). Otherwise to give you an idea of our tastes, local San Francisco favs for a "nicer" night out include Chez Panisse (usual anniversary splurge on downstairs), Zuni, and Baraka.
So... should I go for it? Other suggestions?