Arriva Rail North, branded as Northern by Arriva (legal name Arriva Rail North Limited) was a train operating company in Northern England which began operating the Northern franchise on 1 April 2016 and inherited units from the previous operator Northern Rail. A subsidiary of Arriva UK Trains, Northern was the largest train franchise in the United Kingdom in terms of the size of the network and the number of weekly services run. Its trains called at 528 stations, about a quarter of all stations in the country; of these stations 476 were operated by Northern. On 1 March 2020, Arriva Rail North Limited ceased to operate and all operations were handed to HM Government's Operator of Last Resort.