The Valuation Office Agency (VOA) receives geographic data from Ordnance Survey through its membership of the Pan Government Agreement on Mapping Products. In addition it takes ‘X-Y Co-ordinates’ from the National Land and Property Gazetteer (NLPG).
Information received but neither incorporated into the VOA database nor used in VOAs Automated Valuation model are flood plain “polygons” from the Environment Agency and ACORN™ data from CACI™ Information Solutions.