VOA non-domestic rating data (1,955 hereditaments) exists in the sandbox but is deliberately not shown here β it's under VOA's own restricted licence (not OGL), and #base-model's licence review (step 11) hasn't yet settled what that permits for a public-facing map.
β Building heights are LIDAR-derived (2022 composite) joined onto OSM geometry β table is ODbL, not OGL. Buildings reading ~0m may be newer than the 2022 survey, not actually flat.