wiki:MasterMap

What is Ordnance Survey UK MasterMap?

Ordnance Survey's OS MasterMap contains more than 450 million uniquely identified geographic features, representing real world information down to individual address and street and building level. The data is validated by over 300 surveyors to published quality standards, so you know you are using nationally consistent information.

Ordnance Survey UK

Last modified 13 years ago Last modified on Jan 29, 2009, 2:03:51 PM