["< sod > the'''northern city line'''is an important branch railway in england, which runs from [ [ moorgate station | moorgate ] ] to [ [ finsbury park railway station | finsbury park ] ] in [ [ london ] ]. it is part of the [ [ great northern route ] ] services and operates as the south - eastern branch of the [ [ east coast main line ] ] ( ecml ). it is underground from moorgate to [ [ drayton park railway station | drayton park ] ] in highbury from which point it runs in a cutting until joining the ecml south of finsbury park. its stations span northern inner districts of greater london to the [ [ city of london ] ], the uk's main financial centre. since december 2015 the service timetable has been extended to run into the late evenings and at weekends, < ref > { { cite web | title = great northern timetable changes from 13 december 2015 | url = http : / / www. thameslinkrailway. com / your - journey / timetables / dec - 2015 - gn | publisher = govia thameslink railway | accessdate = 13 december 2015 } } < / ref > meeting a new franchise commitment for a minimum of 6 trains per hour until 23 : 59 on weekdays and 4 trains per hour at weekends. < ref > { { cite web | title = east coast mainline routes & branches part 2 | url = http : / / www. londonreconnections. com / 2013 / east - coast - mainline - routes - branches - part - 2 - hertford - loop - northern - city - line / | publisher = london reconnections | accessdate = 13 december 2015 } } < / ref > < eod > < sod > the'''northern city line'''is a branch railway in england, which runs from [ [ moorgate station | moorgate ] ] to [ [ finsbury park railway station | finsbury park ] ] in [ [ london ] ]. it is part of the [ [ great northern route ] ] services and operates as the south - eastern branch of the [ [ east coast main line ] ] ( ecml ). it is underground from moorgate to [ [ drayton park railway station | drayton park ] ] in highbury from which point it runs in as a cutting until joining the ecml south of finsbury park. its stations span northern inner districts of greater london to the [ [ city of london ] ], the uk's main financial centre. since december 2015 the service timetable has been extended to run into the late evenings and at weekends, < ref > { { cite web | title = great northern timetable changes from 13 december 2015 | url = http : / / www. thameslinkrailway. com / your - journey / timetables / dec - 2015 - gn | publisher = govia thameslink railway | accessdate = 13 december 2015 } } < / ref > meeting a new franchise commitment for a minimum of 6 trains per hour until 23 : 59 on weekdays and 4 trains per hour at weekends. < ref > { { cite web | title = east coast mainline routes & branches part 2 | url = http : / / www. londonreconnections. com / 2013 / east - coast - mainline - routes - branches - part - 2 - hertford - loop - northern - city - line / | publisher = london reconnections | accessdate = 13 december 2015 } } < / ref > < eod >"]