Photo credit: http://www.artsjournal.com/bookdaddy/2007/09/the_greater_shakespeare_tube_m.html
Cut and pasted from the RSC Website:
Poster of the design based on the Greater London Tube Map delineates the important personality types that recur from play to play and shows the intricate connections between the characters.
Follow the link to see the full range of branded products:
PS. I have decided to ditch my "ethnic" custom userhead (we should not be defined or limited by our ethnicity!) for a Sherlockian one.