returned to Northern Rail in December 2008. The rest returned to Northern Rail by November 2011, much later than originally planned. Despite being built for branch-line stopping services, the Class 142s were mainly used on urban commuter services in and out of cities like Liverpool, Manchester, Sheffield, Leeds and Newcastle, and were seen on longer-distance services of up to three hours including the 1632 Middlesbrough-Carlisle service nearly ; they had also been used on services between Blackpool North and Chester via Stockport, which ceased to operate in December 2008. All 79 passed with the Northern franchise to Arriva Rail North in April 2016, and any remaining units transferred to the government-owned operator Northern Trains on 1 March 2020. In June 2020, it was announced that 13 Class 142s would be allowed to re-enter service if necessary, the units being 142004, 018, 023, 058, 065, 068, 070, 071, 078, 087, 090, 094 and 095, which they did on 6 July 2020 following the introduction of a new timetable, due to a need for extra capacity for social distancing during the COVID-19 pandemic, coupled to s so as to avoid needing to be non-PRM (persons of reduced mobility) modified. Pacers were withdrawn from Northern Trains on 27 November 2020, the last service being the 16:36 to , operated by 142004. Merseyside A total of seventeen Class 142 units based at Newton Heath TMD (142041-049 and 142051-058) were refurbished for use on Merseyside Passenger Transport Executive's City Line on services around the Liverpool and Greater Manchester areas. The refurbishment included dot-matrix route indicators and a new design of individual low-backed seating, and the trains were repainted into Merseyrail's livery. Upon privatisation, these units passed to First North Western in March 1997. All of these sets were transferred to Northern in 2016, however remained in the livery of previous operator Northern Rail. Wales Valley Lines acquired its Class 142s by swapping Class 150/2 units with Arriva Trains Northern. The Class 142s were initially painted in Valley Lines livery. Transport for Wales used its Class 142 Pacer trains on the commuter lines around Cardiff, Barry and Penarth known as the Valley lines. All of its Class 142 Pacer fleet wore the turquoise and cream house colours of Arriva Trains Wales. The Class 142 units were also primarily used on South Wales Valley line routes and routes through the Vale of Glamorgan. On Valley and Vale