When privatisation happened, the class 142s were taken over by Arriva Trains Northern and First North Western, and then by Northern Rail, Arriva Rail North, Northern Trains, Arriva Trains Wales and Transport for Wales. Eight Northern Rail units were withdrawn from service for a while and replaced by a series of British Rail Class 158s. First Great Western received 12 units on loan from Northern Rail from December 2007 to November 2011 (five units were returned to Northern in December 2008). This allowed most of its Class 158 fleet to be rebuilt as three-car sets.