capacity it would be facing restrictions on passenger movement. Merseyrail managing director Andy Heath suggested that by the mid 2020s passengers could end up having to queue upstairs as the platforms would have insufficient capacity. Merseyrail chairman Cllr Liam Robinson stated that, due to the potential size of the works, Merseytravel were in discussions with the government over their plans to expand the station. Plans could include a new concourse and new platforms as well as making use of a previously constructed but unused tunnel portal to the east of the underground station. Services Both lines on the Merseyrail network, the Northern Line and the Wirral Line, serve the station. On the Northern Line, off-peak service level is as follows: 4 trains per hour to 4 trains per hour to 4 trains per hour to 4 trains per hour to via On Sundays, frequencies are reduced to 2 trains per hour on all routes. On the Wirral Line, off-peak service level is as follows: 4 trains per hour to 4 trains per hour to 4 trains per hour to 2 trains per hour to During the evening and on Sundays, frequencies are reduced to 2 trains per hour on all routes. These services are all provided by Merseyrail's fleet of Class 507 and Class 508 EMUs. Northern Line Services use platforms 1 and 2 at the station. Usually trains to Kirkby and Hunts Cross depart from platform 1, and trains to Southport and Ormskirk use platform 2, although delays on the trains can cause these to change. All Wirral Line services depart from platform 3. Northern to Wirral services Empty Coaching Stock (non-passenger) services have to reverse at Liverpool Central station, when going from Kirkdale Depot to Birkenhead North TMD and vice versa, making use of a single track chord known as the "Stock Interchange Line" linking Liverpool James Street station (Wirral Line) and Liverpool Central (Northern Line). No passenger services are scheduled to use the link, although it has seen very occasional use by charter trains. This was the route taken by Wirral Line trains between Central L.L & James Street prior to the building of the Link & Loop tunnels in the 1970s. See also List of underground stations of the Merseyrail network References Further reading External links History of Central station Report by the Rail Accident Investigation Branch into 26 October 2005 derailment. (PDF format) Central Railway