ordnance-survey
Converts british national grid (OSBG36) to lat lon (WGS84) and vice versa.
UK location free-text geocoder — resolves road references, place names, junctions and infrastructure to lat/lon
Python SDK for the Postio API — UK address, email, and phone validation. PAF + Ordnance Survey backed. Sync + async, type-safe via Pydantic v2.
