Tata Steel UK’s export to the United States could be significantly impaired, with its £150 million annual trade facing disruption due to technicalities in the UK-US steel trade agreement. As the company transitions its Port Talbot plant from blast furnaces to an electric arc furnace (EAF), it has temporarily ceased melting and pouring steel in the UK, a requirement for tariff-free access under current US trade regulations. The rule in question mandates that steel be “melted and poured” in the country of origin to qualify for tariff exemptions.