Our first Pyramid London meetup was kindly hosted at Skills Matter, who have posted the video of my talk on their page for the meetup.
All the code I demonstrated is on GitHub in the pyramid-london-talk repository - Please note that the traversal code is in the traversal branch, not in a separate project.
I learned loads from preparing the demonstration code and chatting to everyone that attended - so thanks and hope to see you at the next meetup in June!