GBRf 66778 'Cambois Depot 25 Years' leads sisters 66757 'West Somerset Railway' and 66713 'Forest City', with 60021 'PENYGHENT', heading west along the Calder Valley towards Brighouse with empty biomass hoppers.

There are 225 of these bogie hopper wagons, which were built by WH Davis of Shirebrook between 2013 and 2015, and are used exclusively to transport biomass to Drax power station from the ports of Liverpool, Tyne, Immingham and Hull.