"Ordnance Survey (OS) is a national mapping agency in the United Kingdom which covers the island of Great Britain. It is one of the world's largest producers of maps. Since 1 April 2015 it has operated as Ordnance Survey Ltd, a government-owned company, 100% in public ownership. The Ordnance Survey Board remains accountable to the Secretary of State for Business, Energy and Industrial Strategy. It is also a member of the Public Data Group.
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