Updated 18th October - yep, its a big seller on the interweb tubes...well, at least one person had a look at it, so I have started to add a few more things to the map. Let me know if you have any more suggestions - thanks!
Yep, I know its not perfect but its a start. I wanted to try and get all the shops in London I could find on to one Google map. Its a work in progress so if I find any more, I will whack them back on this page so I can remember what and where they were.