where is northern england located?
It is the northern part of England,  bordered by the Midlands to the south. It extends from the Anglo-Scottish border in the north to near the River Trent in the south.
Northern England
Northern England, also known as the North of England or simply the North, is the northern part of England, considered as a single cultural area.

Northern England is bordered by the Midlands to the south. It extends from the Anglo-Scottish border in the north to near the River Trent in the south, although precise definitions of its southern extent vary.
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Northern England [SEP] Introduction
Northern England contains much of England's national parkland but also has large areas of urbanisation, including the conurbations of Greater Manchester, Merseyside, Teesside, Tyneside, Wearside, and South and West Yorkshire. The region has been controlled by many groups, from the Brigantes, the largest Brythonic kingdom of Great Britain, to the Romans, to Anglo-Saxons and Danes. After the Norman conquest in 1066, the Harrying of the North brought destruction. The area experienced Anglo-Scottish border fighting until the personal union of England and Scotland under the Stuarts, with some parts changing hands between England and Scotland many times. Many of the innovations of the Industrial Revolution began in Northern England, and its cities were the crucibles of many of the political changes that accompanied this social upheaval, from trade unionism to Manchester Capitalism.