Lilibet's

You'll find yourself on one of Mayfair's most charming stretches, stepping into somewhere that feels like the neighbourhood's best-kept secret—even though the 4.6-star rating suggests plenty of people have found it. The room has that understated elegance thing down: no overwrought theatrics, just excellent seafood treated with genuine respect. Expect the kind of place where they know their fish better than most, where the wine list rewards curiosity, and where you're not paying for bells and whistles you don't need. It's the sort of restaurant that makes you feel properly looked after without ever feeling fussed over.