British officials have begun classifying sensitive trade documents as “secret” and “top secret” in a bid to shield key information from American counterparts, as relations between London and Washington strain under President Trump’s tariff war, Business Matters has learned.
The move marks a significant shift in internal government protocols, underscoring concerns over the potential misuse or interception of UK economic data during ongoing trade discussions with the US. Sources confirmed that updated guidance has been issued across departments involved in negotiating the UK’s post-Brexit trade relationships, with stricter rules on digital sharing and document access—particularly relating to sensitive sectors such as automotive and pharmaceuticals.
The shift comes as Trump’s White House continues to rattle global markets with sweeping tariffs on trading partners. The UK has been hit with 10% tariffs on all exports to the US and a punitive 25% rate on cars and steel, prompting mounting unease in Whitehall.
In a marked departure from the transparency seen during negotiations with the Biden administration, the UK’s Department for Business and Trade has elevated the classification of many documents. Previously labelled as “Official – sensitive (UK eyes only)”, many are now subject to restrictions typically reserved for high-level security materials.
A senior source close to the matter said: “The reclassification isn’t about severing ties with the US, but reflects the increased volatility and unpredictability of current US policy under Trump. With industries exposed to retaliatory tariffs, ministers and officials are being cautious about who sees what.”
Support authors and subscribe to content
This is premium stuff. Subscribe to read the entire article.
