Transport for Wales (TfW) has completed the refurbishment of its long distance fleet of class 158 diesel trains.
The work forms part of a £40m investment for its diesel fleet that also include class 170 and 150 rolling stock.
Following the enacting of the operator of last resort mechanism, Transport of Wales took over running of the Wales & Borders franchise from KeolisAmey last year. KeolisAmey said the pandemic and resulting fall in passenger numbers had made it commercially unviable.