OS Open TOID

A dataset of unique identifiers for a wide range of landscape and built environment features, with a generalised location, extracted from OS MasterMap products. A TOID (Topographic Identifier) is a unique and persistent identifier for each and every feature found in OS MasterMap products. TOIDs are the authoritative identifier assigned to and uniquely identifying real world objects, being essential for customers to link their own data to and track change over time. OS Open TOID will enable data to be shared for a wide range of landscape and built environment features by providing them with a unique identity and generalised location that can be used by everyone. Watch our OS Open TOID introduction video.