The Ordnance Survey is Great Britains national mapping agency, providing the most accurate and up-to-date geographic data, relied on by government, business and individuals.
OS OpenData is the opening up of Ordnance Survey data as part of the drive to increase innovation and support the “Making Public Data Public” initiative. As part of this initiative Ordnance Survey has published a number of its products as Linked Data.
1:50 000 Scale Gazetteer contains over 250 000 place names and is the most detailed gazetteer available.
Code-Point® Open contains postcode units for Great Britain, each of which has a precise geographic location.
There are approximately 1.7 million postcode units in England, Scotland and Wales. Each contains an average of fifteen adjoining addresses.
Boundary-Line™ contains all levels of electoral and administrative boundaries, from district, wards and civil parishes or communities up to parliamentary, assembly and European constituencies.