opening of underground stations in Liverpool city centre
introduction of new tunnels under Liverpool city centre
introduction of PTE (Passenger Transport Executive) oversight
closure of Liverpool Central High Level station
closure of Liverpool Exchange station
expansion of network in 1970s
franchise awarded to Serco-Abellio in 2003
integration of former LMS and LNER lines
integration of local rail services in 1970s
introduction of Merseyrail Electrics brand
introduction of Merseytravel branding
introduction of electric multiple units
introduction of through services under the Mersey
introduction of zonal ticketing system
opening of Loop and Link tunnels
privatisation in 1990s