The Justices insisted on trains stopping daily for the benefit of the Second Middlesex County Asylum opened that year at Colney Hatch, which became Friern Hospital and closed in 1993.

The original booking office, which sat on a bridge across the railway lines, burned down in 1976 and was replaced by a portakabin.

[7] The station was built next to the asylum, with a siding which connected by a tramway to the stores depot in the grounds.

In autumn 2008, a self-service ticket machine widening payment methods to accept cash and debit/credit cards, was installed at the eastern street-level entrance.

Off-peak, all services at New Southgate are operated by Great Northern using Class 717 EMUs.