The East Coast Main Line (ECML) is a major railway route in the United Kingdom, connecting London to Edinburgh. It serves several key cities, including Peterborough, York, and Newcastle, facilitating both passenger and freight transport. The line is known for its high-speed services, particularly those operated by LNER. Originally opened in the 19th century, the ECML has undergone significant upgrades to improve efficiency and speed. It is an essential part of the UK's transport infrastructure, supporting economic growth and providing vital links between the north and south of England and Scotland.