Little Tokyo

You'll find yourself in the Aylesham Centre, which isn't glamorous, but that's sort of the point. Little Tokyo does what it does without fuss: this is where you go for honest ramen that's been simmered properly, donburi bowls that hit different when you're actually hungry, and yakitori that tastes like someone cared about getting the char right. The 4.5-star rating from locals speaks volumes—people aren't messing about with false praise in Peckham. It's casual, it's busy enough to feel alive, and it won't wreck your wallet.