Steven and Ed look back on the recent (ept 18th) Geomob London, a celebration of OpenStreetMap's 20th birthday. It was easily the largest, but also possibly the best, Geomob London yet, with a phenomenal turn out. Our hosts discuss the talks, the crowd, the evolution of the project, the diversity of its community, and the impact of technology and AI on mapping. They explore the balance between corporate involvement and individual contributions, and the global perspective of OpenStreetMap. Show notes on the Geomob website, where you can also learn more about Geomob events and sign up for our monthly newsletter.