Sainsbury's

You might not think to pop into a supermarket for your morning pastry fix, but this Upper Brook Street branch has quietly built a reputation for its decent bakery counter. The smell of fresh bread hits you the moment you walk through the automatic doors, and their croissants are genuinely flaky rather than the cardboard affairs you'd expect from a chain. What sets this place apart is the timing – they actually bake throughout the day rather than dumping everything out at dawn. Rock up mid-morning and you'll find warm sausage rolls and proper crusty loaves. The staff behind the bakery counter know their stuff too, and they're not shy about telling you when the next batch of whatever you're after will be ready. It's hardly artisanal, but for convenience and consistent quality, it does the job properly.