Published 20 June 2026 by eSourcingData
The US federal market is open to overseas suppliers, and UK companies bring relevant public-sector experience to it. This guide sets out the realistic routes in, from registration and eligibility to partnering, US entities, and the export considerations that come with certain work.
US federal agencies can and do buy from overseas businesses, so a UK company is not shut out by default. That said, some requirements carry conditions on where work is performed, and certain categories favour or require US-based performance, so eligibility varies by opportunity.
The pragmatic mindset is to treat US federal work as a distinct market to be learned, not an extension of UK experience. Your track record helps, but the rules, registration, and expectations are American, and success comes from meeting them on their own terms.
A UK company must register in SAM.gov and obtain a Unique Entity ID just as a US business does, which is a prerequisite for award and payment. Overseas entities may receive a different tax identifier and should expect the entity validation step to take longer.
Prepare official incorporation and address documents in advance, because the validation matches your legal name and address against reference records that may hold overseas businesses differently. Getting these details exactly consistent is the single biggest factor in a smooth registration.
For many UK firms the fastest way in is partnering rather than priming. Subcontracting to, or teaming with, an established US prime lets you contribute your capability while the prime carries the primary contract, the US relationships, and the past performance the government expects.
Partnering also helps with the parts of a requirement that favour US presence, since a US-based prime can hold the relationship while you deliver your specialism. Building a few solid partner relationships often opens more doors than pursuing prime awards cold.
As US work grows, some UK companies establish a US subsidiary or affiliate. A US entity can simplify contracting, payment, and performance, help with requirements that expect domestic presence, and may be necessary to pursue certain set-asides that turn on US ownership and control.
This is a commercial and legal decision with tax and structuring implications, so take proper advice before committing. The point is to weigh it deliberately: a US presence is a meaningful step that can unlock opportunities but also adds cost and administration to maintain.
Some US government work, particularly in defence and certain technologies, involves export controls such as ITAR, which restrict who may access controlled technical data and under what conditions. These rules can limit how a non-US firm participates and are not to be treated casually.
Similarly, some requirements carry citizenship, facility, or country-of-origin conditions that affect eligibility. Before investing heavily in a defence or sensitive opportunity, check these constraints early and take specialist advice, since they can be decisive on whether a UK firm can compete at all.
Explore the US market from the UK
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Search US federal contractsCan a UK company win US federal contracts?
Yes. US agencies can buy from overseas businesses, though some requirements favour or require US-based performance, so eligibility varies by opportunity. Treat it as a distinct market to learn.
Do UK firms register in SAM.gov?
Yes. A UK company registers and obtains a Unique Entity ID like any supplier. Overseas entities may get a different tax identifier and should expect a longer validation step, so prepare documents.
Do I need a US company to bid?
Not necessarily, but a US subsidiary can simplify contracting and may be needed for certain set-asides that turn on US ownership. It is a commercial decision to weigh with proper advice.
What are ITAR and export controls?
They are US rules that restrict access to controlled technical data, common in defence and certain technologies. They can limit how a non-US firm participates, so check early and take specialist advice.
What is the easiest way in for a UK firm?
Often partnering rather than priming. Teaming with or subcontracting to an established US prime lets you contribute your capability while the prime holds the relationship and past performance.
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