the new green GWR livery. As part of a national fleet shuffle, eight units went to Arriva Trains Wales on 10 December 2006, and were replaced with 8 Class 158 units. First Great Western received five extra Class 150/2 units in May 2007 as part of its Remedial Plan Notice, to enable three-car Class 158 trains to operate on the Portsmouth-Cardiff services. Five Class 150 sets were hired from Arriva Trains Wales from March 2008 until they were returned in November 2010. Class 158 Express Sprinter The is a two- or three-coach DMU used on regional express services in the former Wessex Trains area. In February 2008, as part of its Remedial Plan Notice, First Great Western announced that it would form some hybrid three-car Class 158 units in March 2008, made possible by the transfer of five Class 150/2 units from Arriva Trains Wales. There are now ten hybrid units in operation and, combined with the non-hybrid three-car unit, this provides eleven three-car units to operate services between Portsmouth and Cardiff, Great Malvern and Weymouth. After the introduction of Class 150/1 trains from London Overground and London Midland, three of the remaining five two-coach Class 158s will be reformed to provide two further three-coach Class 158s. The fleet was refurbished in a programme begun in 2007, which included fitting of reupholstered seats, new lighting and floor coverings, CCTV within the passenger saloons, and refurbished toilets. At the same time, the exteriors of the vehicles were repainted in the updated FGW livery, including artwork depicting various local places of interest. GWR's Class 158 vehicles were refurbished at Wabtec in Doncaster. In 2018, the 158s began running alongside the first completed Class 255 Castle set on services between Bristol, Exeter, Plymouth and Penzance. Since then, more of the 158 fleet has gradually started to move more west with more 158 sets working services between Exmouth and Paignton / Barnstaple. The timetable change in December 2019 saw the start of the 158s taking over the 143s on the Tarka Line to Barnstaple primarily, with some of the units also working on the Cardiff / Bristol to Penzance route alongside the Castle sets. Current fleet Future fleet In 2022, GWR's parent company FirstGroup issued an expressions of interest notice to manufacturers to supply a new fleet of bi-mode locomotives for its subsidiary TransPennine Express, with an option for additional locomotives to replace GWR's