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Ordnance Survey: Photography

Volume 487: debated on Tuesday 3 February 2009

To ask the Secretary of State for Communities and Local Government whether Ordnance Survey uses (a) aerial and (b) satellite photography to develop its (i) 1:10,000 raster, (ii) 1:50,000 raster, (iii) 1:25,000 raster, (iv) Boundary Line, (v) Code Point with Polygons, (vi) Master Map Topography Layer and (vii) Address Layer 2 products. (252295)

Ordnance Survey uses aerial imagery to assist in revising the topographic geometry contained within the National Topographic Database (NGD), at nominal scales of 1:1250 in urban areas, 1:2500 in rural areas and 1:10,000 in mountain and moorland areas. NGD feeds the OS MasterMap® Topography Layer dataset, while revision of raster data at scales of 1:10,000, 1:25,000 and 1:50,000 is derived from NGD in whole or part. Boundary-Line™, Code-Point® with polygons and OS MasterMap® Address Layer 2 do not involve information derived from Aerial imagery.

Ordnance Survey has not used satellite imagery imagery.