OKAN

You're walking along the Thames and suddenly you've got proper Japanese fine dining without the stuffiness. OKAN sits inside County Hall—that grand art deco building that's become a real destination on the South Bank—and the dining room feels contemporary and unforced. The menu pivots around sushi and robata grilling, executed with real technical skill, and there's a serious sake programme that actually feels curated rather than just there. Prices won't break the bank for what you're getting, which is refreshing when you're this close to the London Eye.