Fake rocks and a sheet of real ice in the cold air of the aquarium’s Arctic display.

Radish drawn with Brushes on my iPhone. I heard about this app from designer Tim Copsey of Empty. I checked to see what Hockney uses and it was the same one.

The view through a window cut in a fence on the edge of a building site near Fenchurch street. Digging foundations and moving earth is like revealing the innards of the city. This together with the fascinating activity of making a building.