Ordnance Survey (OS) is a national mapping agency in the United Kingdom covering the island of Great Britain. On April 1, 2015, it operated as Ordnance Survey Ltd. This is a 100% government-owned company in public ownership. The National Cartography Council remains responsible to the Secretary of State for Commerce, Energy, and Industrial Strategy. The map indicates its original military purpose to map Scotland in the wake of the Jacobite in 1745. There was a general and country-wide need in light of the potential threat of invasion during the Napoleonic Wars. Map of the General Staff remains in the copyright for fifty years after its publication. Some of the Author Libraries maintain complete or near-complete collections of pre-digital operating system mapping.

Ordnance Survey mapping generally classified as "large scale” or "small scale." Large-scale mapping of the Survey comprises 1: 2,500 maps for urban areas and 1: 10,000 more generally. The latter replaced the 1: 10,560 "six inches a mile" scale in the 1950s. These large-scale maps are typically used in professional land-use contexts and were available as sheets until the 1980s when they were digitized. Small-scale mapping for leisure use includes 1: 25,000 series "Explorer," 1: 50,000 series "Landranger" and 1: 250,000 maps of the road. These are still available in the traditional sheet form. The origins of the Ordnance Survey lie in the aftermath of the Jacobite uprising of 1745, which was ultimately defeated by forces loyal to the government at the Battle of Culloden in 1746.

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Prince William, Duke of Cumberland, realized that the British Army did not have a good map of the Scottish Highlands to locate dissident Jacobites like Simon Fraser, Mister Lovat 11 so that they could bring to trial. In 1747, Lt. Col. David Watson proposed a map of the mountains to help subdue the clans. In response, King George II charged Watson with fabricating a highland military survey under the command of the Duke of Cumberland. Watson's assistants included William Roy, Paul Sandby, and John Manson. Use the Ordnance Survey discount code and promo codes at Voucher Pro.

Official website - Ordnance Survey