Song of the Earth
London is the capital city of the United Kingdom, and one of the largest cities in the world. It is also where Alex Cinna grew up, at an Order of Hermes boarding school designed to indoctrinate students in the Hermetic paradigm and push them toward Awakening. Alex was successful.
Though little else has been mentioned besides the extremely large Hermetic presence, it can be assumed a city as large and diverse as London has representation of all nine Traditions, the Technocracy, and other groups besides.