Upper Holloway railway station is in Holloway, North London, near Archway (N19). It is on the Gospel Oak to Barking Line, between Gospel Oak and Crouch Hill. It is operated by London Overground, and the service is one train every 15 minutes in each direction except late evenings when it is half-hourly. The line is not electrified, and services are operated by two-car Class 172 DMUs.
The station is a short walk along Holloway Road from Archway on the Northern Line. This is currently the most convenient interchange between the two lines, given as "450 m" on the maps inside London Overground trains (but the interchange is not mentioned on London Underground maps). There are rumours of an interchange station to be built at Tufnell Park where the Gospel Oak to Barking line crosses the Northern Line, on the site of the now demolished Junction Road station but as yet there is no official word on if or when this work would be carried out.