I'm from Canada, so the UK spelling is fine. I was more distracted by the London locale: I know the Gherkin, because I googled it recently after seeing it in a movie (maybe James Bond?), but I don't know "The Eye". And all the neighbourhoods and villages mentioned mean a quick trip to Google Maps is in order. But, my lack of knowledge about UK geography doesn't take away from my enjoyment of the story!
I'm not sure how the metadata gets into the mobi file either ... sorry.