The Ordnance Survey is a British mapping agency that produces and publishes topographic and nautical maps of the UK. Some synonyms for Ordnance Survey include OS Maps, Ordnance Survey Maps, Ordnance Survey Ireland (OSI), Ordnance Survey Scotland, Ordnance Survey Northern Ireland (OSNI), and Ordnance Survey Great Britain. These maps are widely used by hikers, cyclists, and other outdoor enthusiasts for navigation and trip planning. The Ordnance Survey also provides a digital mapping service, allowing for more detailed and accurate mapping to be used in various applications. Whether you're seeking to explore the wilderness or plan a urban expedition, Ordnance Survey has something for everyone.