The North Eastern Railway (NER) was an English railway company. It was incorporated in 1854 by the combination of several existing railway companies. Later, it was amalgamated with other railways to form the London and North Eastern Railway at the Grouping in 1923. Its main line survives to the present day as part of the East Coast Main Line between London and Edinburgh. The total length of line owned was 4,990 miles (8,030 km) and the company's share capital was £82 million. The headquarters were at York and the works at Darlington, Gateshead, York and elsewhere.