I think it might be the shop in Albert Street which sells foreign food, for want of a better description, to migrants in the local area. Up from Blewett and Pender, down from West Cornwall Holidays. Sorry, don t know name of building.
It is called Baltic Deli but since no-one could give a better description of the shop and its whereabouts, I shall award you with 3 points and say once again, Well done, PZM!