It is located between Chepstow and the city of Newport on the Gloucester line, 148 miles 2 chains (238.2 km) from the zero point at Paddington, measured via Stroud.

[4] By 1875 the wire works was also served by a level crossing and a crossover between the two running lines, controlled by a signal box.

[5] One of the main tasks of this line was to deliver coal for the pumping engines needed to drain the tunnel workings.

Even after the long-delayed tunnel opened in 1886, on the South Wales Main Line, this coal traffic remained the major reason for keeping this branch in service.

The private siding agreements are first made in the name of the builders McAlpine, then the United States Army Air Forces from 1943, and only transferred to the Ministry of Defence as the Royal Navy in 1944.

The station is unstaffed apart from occasional Saturday mornings or when major events occur at the Millennium Stadium, Cardiff, when a guard may be on duty for the purpose of selling tickets.

Recorded information, not always up to date, can be obtained via a push button customer help point located outside the station precincts.

[9] There are also a small amount of CrossCountry trains between Nottingham or Birmingham New Street and Cardiff Central that call here on Mondays to Saturdays only, during the morning and night.