CEO vs CoE
The battle is about to begin. An anonymous poster here along with an anonymous emailer point us to this video:
As you can see from the video, Sean McCarthy is wearing a custom Steorn "CEO vs CoE" t-shirt, in front of some building smoking a cigarette. While the author of the video could have done a better job at showing us that they are actually at the Kinetica Museum in London, I'm sure someone here can verify the building.