This short extension of electrified Merseyrail line at the southern end of the Northern Line opened in 1983. It facilitated passenger interchanging between the Merseyrail Northern Line services with the Merseyrail City Line and main line services from Lime Street. The reopened line passed under the West Coast Main Line Liverpool branch at Allerton but needed to cross the southern Manchester line via Warrington on the flat, which affected capacity.
