In a landmark ruling, the US Supreme Court has struck down former President Donald Trump’s controversial global tariffs, prompting swift reactions from the UK and the EU. Both governments are now evaluating how the decision will influence their trade relations with the United States, amidst concerns over the future of tariffs imposed on various goods.
UK Government’s Response
A spokesperson for Downing Street confirmed that the UK is in close collaboration with US officials to gauge the fallout from the Supreme Court’s decision. The UK government remains optimistic about maintaining its “privileged trading position” with the US, despite the overturning of the tariffs. Previously, the UK benefitted from a 10% tariff on imports compared to the EU’s steeper 15% rate.
The ruling is seen as a pivotal moment, with the court declaring that Trump overstepped his executive authority in imposing these tariffs. This decision could open the door for companies impacted by the tariffs to seek refunds, although the process for doing so remains unclear.
EU’s Strategic Evaluation
The European Union is also closely monitoring the situation, seeking clarity on how this ruling will affect its own tariff agreements. Following negotiations held at Trump’s golf course in Scotland, the EU had previously accepted a 15% tariff arrangement, but the ongoing 50% tariffs on steel remain a contentious issue.
An EU representative stated, “We remain in close contact with the US administration as we seek clarity on the steps they intend to take in response to this ruling.” The EU is keen to reduce tariffs on its exports and emphasises the importance of stability in transatlantic trade relations.
Business Community Reacts
Trade experts express mixed feelings about the implications of the ruling. John Denton, Secretary General of the International Chambers of Commerce, highlighted the fresh uncertainty that companies must navigate. “Many businesses will welcome the prospect of refunds following today’s ruling,” he noted. However, the complexities of US import procedures could make claiming these refunds a challenging task.
William Bain, head of trade policy at the British Chambers of Commerce, echoed these sentiments. While acknowledging the Supreme Court’s clarification on executive powers, he cautioned that it does little to alleviate the uncertainty for businesses that may still be subject to potentially higher tariffs under alternative legal frameworks.
Stock Market Reactions
Following the Supreme Court’s announcement, the UK’s FTSE 100 index surged to a new intraday high, closing up 0.56%. Export-focused companies were among the beneficiaries, with Diageo, famous for its whisky and tequila brands, seeing a 3.9% increase in shares. Other notable gains were recorded by luxury fashion brand Burberry and car manufacturer Stellantis.

Conversely, US government bonds experienced a decline, resulting in increased borrowing costs as investors recalibrated their expectations regarding tariff revenues. The dollar also weakened slightly in response to the ruling.
Why it Matters
The Supreme Court’s decision marks a significant shift in US trade policy and could reshape the economic landscape for both the UK and the EU. As both regions assess the implications, businesses are left grappling with uncertainty over future tariffs and trade relations. This ruling not only impacts immediate financial interests but also has the potential to redefine transatlantic cooperation and economic strategy in the face of a changing global trade environment.