There’s a darker side to parts of Britain’s wool trade, exposed by an undercover investigation by animal rights group PETA Asia. Every year, for health reasons, sheep have their winter fleeces removed.

But in footage given exclusively to this programme, sheep shearers are filmed punching, kicking, and stomping on the heads of animals, raising questions about standards of welfare within the industry. We should warn you, some of the images in this report show extreme violence towards animals, which some viewers may find distressing.