STEELWORKERS will start industrial action in Wales tomorrow as Unite members in Tata Steel sites in Port Talbot and Newport Llanwern ban overtime and begin working to rule.

The action — by 1,500 steelworkers  — is the first within the UK steel industry in 40 years, with Unite claiming that it will severely disrupt and delay Tata’s operations and order book. 

The union promised that strike action would be scheduled if the company did not row back on its plans to close two blast furnaces.