Mark Thomas and MI6

I am planning on attempting to view the blueprints/plans of the London underground and develop ideas around the idea of flow through the underground corridors of London. This idea came from being told about a sketch by Mark Thomas, who went and got the plans for the MI6 building in London, and then proceeded to go in and ask about what the building was. They would not say, but everyone he asked on the street outside seemed to know it was the MI6 building anyway. Amusing tactics.

See: http://www.youtube.com/watch?v=5VuBJZiLQSQ