Original: It provides local , suburban and express services from Liverpool Street station in the City of London to destinations in the railway franchise known as the Greater Anglia network , stretching from north and east Greater London to Essex , Hertfordshire , Cambridgeshire , Suffolk and Norfolk in the East of England ( East Anglia ) .
Simplified: It provides local , suburban and express services from Liverpool Street station in the City of London to destinations in the railway franchise known as the Greater Anglia network , stretching from north and east Greater London to Essex , Hertfordshire , Cambridgeshire , Suffolk and Norfolk in East Anglia .