President Trump has announced he would impose 25% tariffs on steel and aluminium imports into the US on top of existing duties. With the President giving away few details of what he is proposing, it remains unclear whether this will cancel all or some of the previous arrangements on existing Section 232, 25% tariffs on steel and 10% tariffs on aluminium.
The UK exports around 200,000 tonnes of steel per year to the US, worth over £400m.
Certain countries like Canada and Mexico were granted exemptions when Section 232 tariffs were first imposed in 2018. Later the UK, the EU and Japan negotiated a system of tariff-rate quotas. Until now, customers in the US could also apply for product specific exemptions to import products not made in the US, tariff-free. It will be important to understand whether the recent announcement will override all these arrangements. Any changes to current agreements between the UK and the US could have a hugely damaging impact on the UK steel sector, both directly and via trade diversion from countries that may be barred from exporting to the US.
Current global steel overcapacity means that when the US imposes tariffs on multiple countries, excess steel is forced into other markets, including the UK. Without strong trade shields, this risks a surge of unfairly priced imports, undermining UK steelmakers, distorting competition, and threatening the long-term viability of our industry. The UK is currently partially shielded from the effects of trade diversion by existing Steel Safeguard measures, but these expire in June 2026. The UK Carbon Border Adjustment Mechanism (CBAM), a tax measure on high-emission steel imports, will not come into force until January 2027.
UK Steel Director General, Gareth Stace, said:
"The imposition of US tariffs on UK steel would be a devastating blow to our industry. The US is our second largest export market after the EU. At a time of shrinking demand and high costs, rising protectionism globally, particularly in the US, will stifle our exports and damage over £400 million worth of the steel sector’s contribution to the UK’s balance of trade.
"It is deeply disappointing if President Trump sees the need to target UK steel, given our relatively small production volumes compared to major steel nations. The UK produces world-leading steel, supplying the US with high-quality products for defence, aerospace, stainless, and other critical sectors, materials that simply cannot be replicated elsewhere.
“At the same time, the introduction of further US tariffs will inevitably divert global trade flows, with excess steel potentially redirected to the UK market. This reinforces the urgent need for watertight UK trade measures in 2026 to prevent surges in imports following the UK’s steel safeguards expiry. Accelerating the UK’s CBAM to 2026 would provide an additional layer of protection against unfairly priced steel. The UK Government must act decisively to shield our domestic industry from the fallout of rising global protectionism."
Alasdair McDiarmid, Community's Assistant General Secretary, said:
"While we await full details and a formal policy announcement, the comments from the White House regarding new tariffs on steel are extremely concerning.
"At a time of uncertainty for the sector, a punitive new tariff on UK steel exports would be hugely damaging and threaten jobs. For the US it would also be self-defeating, as the UK is a leading supplier of specialist steel products required by their defence and aerospace sectors.
"Again, this just reinforces the need for a strong UK Carbon Border Adjustment Mechanism and for robust new measures to be put in place when existing safeguards expire to shield our steel sector from a surge in cheap imports."
ENDS
Contact details
Louise Young, Campaigns and Engagement Manager, UK Steel
07388 370176 | Lyoung@makeuk.org
Notes to editors
The UK steel sector: