"After that all I had to do was ask everyone I met if they knew him until someone said "yes" and arranged a meeting."
That was an interesting point. See if u can get to someone really obvious/mainstream in the uk with those tactics.
Those A0 size oils of tokyo street crossings are brilliant as is almost everything on that gallery.The prep, research and effort are on par with the finished piece if not better.
You (and manko) have set standards i can only crave for. Well done.