Atariya Foods Swiss Cottage

This Japanese speciality supermarket and fish wholesaler may look a little unassuming from the front but don't be fooled. The sushi made here is excellent; you can pick 'and mix it from the sushi bar inside. You'll find a range of top-quality nigiri, sashimi and maki sets for a fraction of what you'd pay at one of the city's more renowned spots. It's ideal for a grab-and-go lunch, plus you can stock up on Japanese pantry staples at the same time.