Whilst services from Liverpool on the West Coast Main Line may not officially be part of the City Line, sometimes the distinction is unclear. For example, Merseytravel publicity for Liverpool South Parkway referred to the Central Trains service from Liverpool to Crewe and Birmingham New Street as if it were part of the City Line. The City Line timetable booklets also show other services where they share tracks with City Line trains (for example, the Chester–Manchester services via Newton-le-Willows and Warrington Bank Quay).