See main article: West Coast Main Line. The West Coast Main Line is a major trunk railway in the United Kingdom, linking London with Glasgow. The Watford DC lines are intricately linked with the southern part of the WCML and are also shown in full. A detailed diagram of the line is housed on this page for technical reasons. Note that some complex areas have been simplified for clarity.
Where dates for a railway station are shown as e.g. (1853–1959/1964) these refer to the dates of closure to passengers and freight.