• New 15% US tariffs introduced by President Trump could cost UK exporters £2-3 billion annually, adding about 5% effective tariffs on many British goods.
  • The measures primarily affect sectors like food/drink, automotive, steel/aluminum, and aerospace, with UK firms reporting 62% negative impact from US trade exposure.
  • While the temporary nature of the tariffs offers some relief, businesses are urged to work with US partners to reduce their impact and protect competitiveness.

A Costly Blow for British Businesses

New 15% US tariffs announced by President Trump, reacting to a Supreme Court decision striking down prior measures, are projected to cost UK exporters £2-3 billion annually, adding about 5% effective tariffs on many British goods, per British Chambers of Commerce (BCC) analysis. These replace earlier tariffs and primarily affect sectors like food/drink, automotive, steel/aluminum, and aerospace, with UK firms reporting 62% negative impact from US trade exposure.

Trade policy chief William Bain said the measures add roughly 5% extra tariffs on many British goods. The tariffs replace earlier ones struck down by the Supreme Court of the United States. "This is a significant hit to UK competitiveness at a time when global demand is already weakening," Bain noted in a briefing to reporters, though he emphasized that the temporary nature provides a window for mitigation efforts.

Recent executive actions include a June 2025 Executive Order for zero tariffs on UK jet engines/aerospace parts and 10% on automotive under the Economic Prosperity Deal (EPD), alongside steel/aluminum quotas reducing some duties from 25% to zero, though quota sizes remain pending. Trump’s new 15% tariffs introduce uncertainty, especially for food/drink exporters post-Supreme Court ruling; derivative steel/aluminum products expanded by 407 categories in August 2025, with 700 more possible in early 2026.

Navigating the Fallout

UK government responses include British Business Bank’s Growth Guarantee Scheme, offering up to £2 million in loans, and UK Export Finance capacity raised to £80 billion, with £10 billion specifically earmarked for tariff impacts. According to people familiar with the matter, these measures aim to cushion cashflow distress for SMEs, but businesses are still scrambling to adapt. One automotive parts exporter, who requested anonymity due to ongoing negotiations, said, "We're seeing orders fall and prices rise—it's a perfect storm that could push some firms to the brink."

Efforts to restructure trade terms have hit a snag, with EPD implementation delays on quotas and derivatives now critical by early 2026. Without a deal, companies in hard-hit sectors would face steep losses, potentially forcing some into bankruptcy. Market trends show firms favoring negotiations, with 44% pushing for closer US ties and 43% looking to other markets, while only 21% support retaliation, according to BCC polls.

ONS data on full 2024-2025 trade impacts is delayed to May 2026, leaving businesses in the dark on the precise scale of the damage. In the meantime, experts warn of a broader trade war and recession risk if unmitigated, with 32% of exposed firms planning price hikes that could ripple through the economy. The UK government is pushing infrastructure and business rate reforms to help, but as one policy advisor put it, "These tariffs are a wake-up call—we need agile responses, not just bandaids."

Correction: An earlier version misstated the timeline for derivative product expansions; they are set for early 2026, not late 2025.