Tata Steel's Llanwern plant near Newport is running at roughly half capacity, with production lines idling for parts of each day and workers reassigned to maintenance. The cause is not a demand collapse for galvanised steel — the UK needs about 1.2 million tonnes a year and Llanwern produces roughly half of it. The cause is a policy choice: the government raised tariff-free import quotas for galvanised steel as a concession to land an India trade deal, and WTO most-favoured-nation rules forced matching increases for Vietnam and South Korea. The numbers are stark. India's duty-free galvanised steel quota rose from 98,000 to 125,000 tonnes. Vietnam's more than tripled, from 51,000 to 174,000 tonnes. South Korea received 100,000 tonnes. Together, these quota increases opened a corridor for nearly 400,000 tonnes of tariff-free galvanised steel — against Llanwern's 600,000-tonne annual output. The 50% tariff introduced in July was supposed to be the shield; the quota carve-outs punched a hole through it. The trade-deal logic is straightforward: India demanded better steel access as a condition for broader trade terms, and the government complied as a last-minute concession, first reported by the Financial Times. But WTO rules on comparable exporters meant the India concession automatically extended to Vietnam and South Korea. The diplomatic gain for one bilateral relationship created a structural vulnerability across an entire product category. Tata's commercial director Russell Codling called the situation "just isn't sustainable" and said the quotas alone have the power to reverse it. The Tata UK boss Rajesh Nair expressed being "very concerned" earlier this summer. Tata met industry minister Blair McDougall two weeks ago to lay out the scale of the problem. The Community union's Alasdair McDiarmid warned the increase in duty-free imports from China and Vietnam poses a direct threat to domestic steel. The deeper risk is to the £1.25bn electric arc furnace transition at Port Talbot — about £500m of which is public money. That project already cost 2,000 jobs when the blast furnace closed in 2024. A steel industry source warned that if cheap imports undermine Tata's downstream processing sites like Llanwern, the commercial case for the arc furnace itself weakens. The green steel transition depends on downstream demand that the quota policy is now eroding. The government's position is that category 4 imports remain below quota levels and that the system will be reviewed before July 2027. That timeline means Llanwern faces at least another year of competitive pressure at current quota levels. The government spokesperson emphasised "striking the right balance" — but the balance currently lands on Llanwern's workforce and on a £1.25bn investment that the public is co-funding. This is a textbook case of trade diplomacy externalising its costs onto a specific industrial site. The India deal benefits are diffuse and national; the costs are concentrated in south Wales. The WTO cascading effect — where a bilateral concession automatically multiplies across other exporters — was either not anticipated or was accepted as collateral damage. Either way, Llanwern is paying the bill.
