As I now know my future address in London, I was looking for supermarkets around and found no easy way to find all the available ones. After looking on each supermarket website I decided to gather the information.
So, I collected positions of ASDA, Tesco, Morrison, Sainsbury's, Poundland and Waitrose (with opening times for some) and pushed them into a Google map.
I actually have info for all UK but if Google map paginates it becomes unusable as you need to go through all pages to know the supermarkets in your area. If someones knows a way to restrict the list to current view on "static" maps, I am interested.