Northern (train operating company) – Wikipedia

Northern (legal name Arriva Rail North Limited) is 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 is the largest train franchise in the United Kingdom in terms of the size of the network and the number of weekly services run; its …

https://en.wikipedia.org/wiki/Northern_(train_operating_company)