<P> The marine boundary was adjusted by the Scottish Adjacent Waters Boundaries Order 1999 so that the boundary within the territorial waters (up to the 12 - mile (19 km) limit) is 0.09 km north of the boundary for oil installations established by the Civil Jurisdiction (Offshore Activities) Order 1987 . </P> <P> The border is marked by signposts welcoming travellers both into Scotland and into England . </P> <P> The border country, historically known as the Scottish Marches is the area either side of the Anglo - Scottish border including parts of the modern council areas of Dumfries and Galloway and the Scottish Borders, and parts of the English counties of Cumbria, County Durham and Northumberland . It is a hilly area, with the Scottish Southern Uplands to the north, and the Cheviot Hills forming the border between the two countries to the south . From the Norman conquest of England until the reign of James VI of Scotland, who in the course of his reign became James I of England while retaining the more northerly realm, border clashes were common and the monarchs of both countries relied on Scottish Earls of March and Lord Warden of the Marches to defend and control the frontier region . </P> <P> A 16th - century Act of the Scottish Parliament talks about the chiefs of the border clans, and a late 17th - century statement by the Lord Advocate uses the terms "clan" and "family" interchangeably . Although Lowland aristocrats may have increasingly liked to refer to themselves as "families", the idea that the term "clan" should be used of Highland families alone is a 19th - century convention . </P>

Where is the border between england and scotland
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