Some more examples of urban plant survivors around Exeter (see 18 June below). Let me know if you see any other good candidates.
1. Poundland* polypody, with gull, Sidwell street
(* other pound shops are available).
There must be a nest up there on the flat roof. I waited a while for the gull to walk into view.
2. Parliament St polypody, on the 'narrowest street in Britain'.
3. Tudor house polypody (Tudor St, near Renslade House), more at home as an epiphyte on the ancient wooden timbers, maybe.