The Caledonian Railway (CR) was a major Scottish railway company. It was formed in the early 19th century with the objective of forming a link between English railways and Glasgow. It progressively extended its network and reached Edinburgh and Aberdeen, with a dense network of branch lines in the area surrounding Glasgow. It was absorbed into the London, Midland and Scottish Railway in 1923. Many of its principal routes are still used, and the original main line between Carlisle and Glasgow is in use as part of the West Coast Main Line railway.

Glasgow is the most populous city in Scotland, the third-most populous city in the United Kingdom, and the 27th-most populous city in Europe. In 2022, it had an estimated population as a defined locality of 632,350 and anchored an urban settlement of 1,028,220. Glasgow became a county in 1893, the city having previously been in the historic county of Lanarkshire, and later growing to also include settlements that were once part of Renfrewshire and Dunbartonshire. It now forms the Glasgow City Council area, one of the 32 council areas of Scotland, and is administered by Glasgow City Council.