Workers at steel giant Tata have launched a work to rule and overtime ban in protest at the company’s plans to close blast furnaces at its Port Talbot plant.

Tata is switching to a greener form of production at the steelworks, which needs fewer workers as a consequence.

Unite said 1,500 of its members based in Port Talbot and Llanwern started industrial action on Tuesday, warning that strikes will be held if the company does not row back on its plans.