Tata Steel’s manufacturing plant in Llanwern, south Wales, is running at about half capacity as a surge of cheap Asian metal imports strains UK steel producers.
Import Quotas Threaten Llanwern Plant Viability
The manufacturing slowdown stems from rising import volumes permitted under government-set tariff-free quotas. According to industry data, India’s allowance for galvanised steel rose from 98,000 to 125,000 tonnes, while Vietnam’s allowance more than tripled from 51,000 to 174,000 tonnes. South Korea received an increased quota of 100,000 tonnes.
The larger quota for India was a move to help secure a trade deal, as reported by the Financial Times. World Trade Organization rules require comparable exporters to be treated equally, which forced parallel quota increases for Vietnam and South Korea.
Rajesh Nair, the Tata UK boss, stated earlier this summer that he was “very concerned” about the new arrangement. The Llanwern facility produces about 600,000 tonnes of galvanised steel annually, representing nearly half of total UK demand.
Industry Response and Impact on Green Steel Transition
Tata Steel representatives met with Blair McDougall, the minister for industry, to outline the operational challenges facing the south Wales site. Russell Codling, the commercial director of Tata Steel, said that the Zodiac galvanising line is being significantly impacted by the new quotas in a situation he described as unsustainable.

The company is transitioning away from traditional blast furnaces in Port Talbot toward a 3-million-tonne electric arc furnace. That transition involved 2,000 job losses when the blast furnace closed in 2024, backed by a £1.25bn investment that includes a £500m government grant.
However, an industry source warned that prolonged tariff pressure could endanger that green transformation. According to the source, ongoing impacts across core downstream processing sectors could create knock-on effects for the electric arc furnace project.
Did you know? Galvanised steel is dipped in molten zinc to create a protective, corrosion-resistant layer that can endure for decades in applications like bridges and car bodies.
Union Concerns and Government Position
Alasdair McDiarmid, assistant general secretary at the Community union, stated that the increase in duty-free imports from China and Vietnam poses a direct threat to the domestic steel industry. He called on the government to adopt a more robust approach to secure the long-term future of the Llanwern workforce.
The government previously stated that it will review the quota system before adjustments occur in July 2027. A government spokesperson said that the steel measures aim to balance domestic production with supply security, noting that category 4 imports remain below set quota levels while officials continue monitoring the impact.
Frequently Asked Questions
What is galvanised steel used for?
Galvanised steel is coated with zinc to prevent corrosion and is widely utilized in automotive bodywork, construction projects, bridges, and outdoor signs.

Why are Llanwern production lines running at half capacity?
What is the government’s stance on the import quotas?
The government maintains that its trade measures balance domestic protection with supply security, and officials stated they will review the quota system after 12 months.
What are your thoughts on the challenges facing the UK steel industry? Share your perspective in the comments below.