“They last for ever,” says Adam Nathaniel Furman. “When we’re all dead, when the world has ended, they’ll still be here.” The things in question are ceramics and mosaics, favourite materials of the 40-year-old designer and artist. In which case, they – Furman’s preferred pronouns are they/them – will leave behind some arresting remnants for alien archaeologists: a colonnade of sculpted blue-and-white tiles bonded to concrete pillars in the south London suburb of Croydon; a 57 metre-long (187ft) mosaic outside London Bridge station; a multicoloured “quilt” of off-the-peg tiles in a pedestrian underpass in Bristol.