Does anyone know if there is an asian (particulary Japanese) supermarket in the Surrey or Middlesex area?

Question

Or even in South/southwest London?

Answer 1

Yes: Hoo Hing has five cash-and-carry branches around London, including one in Middlesex (Enfield) and one in Surrey (Mitcham). Here's the link to their individual addresses: http://www.hoohing.com/stores/

Though it's primarily a Chinese supermarket, it also stocks Japanese ingredients -- here's their Japanese product list:  http://www.hoohing.com/acatalog/Products...

Hope that helps.

=)