The British Museum has an amazing collection of antiquities from around the world, but for our purposes, we'll be just as interested in the museum's visitors as the exhibits themselves.
We'll meet first at the most obvious cafe in the area, Camera Cafe - the cafe is at the back of the shop, and note that it doesn't open till 12pm (hence the start time). We'll head off just after 12.30pm, once everyone's arrived.
As we could easily take hours wandering around the museum, looking at everything, we need to be disciplined and focus on the photography! We can divide ourselves into groups visiting specific areas, if there's enough interest in doing that. A full gallery map can be found at http://www.britishmuseum.org/visiting/floor_plans_and_galleries/ground_floor.aspx
We'll finish up at the Gallery Cafe, which is just off the Parthenon Room (12); we can refresh ourselves with drink and food and catch up with each other.