A UK-incorporated trading company receives notice that its sole director has been designated under a thematic financial-sanctions regime administered by OFSI (His Majesty's Treasury's Office of Financial Sanctions Implementation). Overnight, the company's bank accounts are frozen, payment instructions are rejected, and counterparties suspend contracts. The director disputes every factual premise of the designation. What can the company actually do – and how quickly must it act?
Challenging the designation criteria under OFSI requires a structured, evidence-led process grounded in the Sanctions and Anti-Money Laundering Act ("SAMLA") and the relevant thematic sanctions regulations. OFSI does not itself decide whether a person remains designated; that power sits with the Secretary of State, with judicial review before the High Court available as a further route. As of February 2026, the legislative basis, the evidential threshold, and the procedural sequence are all materially different from the equivalent routes under OFAC, the EU Council, or the UN Consolidated List – and a strategy that works in one regime can fail in another.
This guide walks through the legal basis, the decision sequence, the cross-border implications, and the practical risk flags a compliance adviser or in-house counsel should consider before the first letter is sent.
Step 1: Understand the Legal Basis and Who Holds the Power
Under SAMLA, the power to designate – and to revoke or vary a designation – rests with the Secretary of State for Foreign, Commonwealth and Development Affairs, not with OFSI directly. OFSI implements and enforces financial-sanctions obligations; it is the Secretary of State who made the designation decision and who can reverse it. Understanding that distinction is the first step, because it determines where the challenge is directed and which procedural rules apply.
The relevant thematic sanctions regulations made under SAMLA set out the criteria a person must meet to be designated. Broadly, the Secretary of State must have reasonable grounds to suspect that the person meets the designation criteria for the relevant regime. That "reasonable grounds to suspect" standard is a low evidential threshold for the initial designation. It is, however, reviewable. The designated person or a third party with a sufficient interest can request that the Secretary of State reviews whether the criteria are still met, whether the factual basis has changed, or whether the original assessment was flawed.
In our experience, clients are often surprised that OFSI itself cannot lift a designation. Directing representations to OFSI's licensing team rather than to the correct unit within FCDO is one of the most common early procedural errors. It wastes time that may already be limited.
Step 2: Map the Available Routes Before You Draft a Single Document
There is more than one route to challenge a UK designation, and choosing the right combination early is essential. The three main routes operate in parallel, not in strict sequence.
The first route is an administrative review request to the Secretary of State. The designated person, or a representative, submits written representations arguing that the criteria are not met, that the underlying facts are wrong or have changed, or that the decision was procedurally flawed. There is no prescribed form; the strength of the submission lies in how it maps each factual dispute to the legal test. The Secretary of State must consider the representations, but there is no fixed statutory deadline for a decision, and the review can take considerable time.
The second route is judicial review before the High Court (Administrative Division). Judicial review challenges the lawfulness of the designation decision – typically on grounds of illegality, irrationality, or procedural unfairness – rather than conducting a fresh merits assessment. Timing is critical: judicial review applications are subject to a prompt filing requirement, and delay can extinguish the right. Where the facts are genuinely disputed, judicial review is often run alongside or after an administrative review rather than as a standalone first step.
The third route, relevant where an asset-freeze causes acute financial hardship, is an application to OFSI for a specific licence. A specific licence (a case-by-case authorisation to conduct an otherwise prohibited transaction) can permit access to frozen funds for specific purposes while the substantive challenge proceeds. The licence does not lift the designation; it creates a lawful window around it.
Which route to lead with depends on the urgency of the harm, the strength of the factual challenge, and whether the error is one of fact, law, or process. In a recent matter, a financial-services firm faced designation that rested on a misidentification of a common name. We prepared parallel representations to the Secretary of State and an emergency licence application to OFSI. The matter resolved through the administrative route before litigation became necessary. That outcome is not guaranteed; the right combination of routes is case-specific.
Step 3: Build the Evidence Package
The quality of the evidence package typically determines whether an administrative review succeeds. The Secretary of State is not obliged to accept bare assertions; representations that do not address the specific criteria cited in the designation decision – or that respond to what the designated person assumed the criteria to be, rather than what they actually are – rarely succeed.
A well-structured evidence package should address the following elements:
- Identification of the specific designation criteria at issue – setting out each criterion from the relevant thematic regulations and explaining precisely why the person does or does not meet it.
- Factual rebuttal – contemporaneous documentary evidence contradicting the factual premises of the designation. Bank records, company filings, contemporaneous correspondence, and third-party confirmations all carry weight. Assertions without supporting documents carry very little.
- Continuity evidence – demonstrating that the basis for designation has not been met at any relevant time, not merely that it is no longer met now. If the initial designation was grounded in information that was wrong from the outset, the rebuttal must go back to that point.
- Third-party statements – declarations from individuals or entities in a position to speak to the relevant facts, provided they are genuinely probative and not simply character references.
- Legal analysis – a structured argument explaining why, on the facts submitted, the "reasonable grounds to suspect" threshold is not met, or why the Secretary of State's assessment was wrong in law or in fact.
The review process is not a court hearing. There is no automatic right to see all intelligence relied upon, though the summary of reasons for designation must be provided. Where the designation is based partly on sensitive intelligence material, the designated person may not have access to the full evidential basis. This is one of the most difficult features of the UK regime. It makes the quality of the legal argument all the more important, because the evidence package must address both the known grounds and the plausible inference of what the unknown grounds might be.
For detailed guidance on building the evidence file for a related regime, see our page on assembling a delisting evidence package in the Australian regime, which sets out transferable principles for document selection and submission structure.
How Does the OFSI Challenge Route Compare with the OFAC and EU Approaches?
The UK, US, and EU designation-challenge routes share the same objective but differ substantially in structure, standard of review, and procedural rights. A cross-border business – or an individual subject to parallel designations in multiple jurisdictions – must manage those differences simultaneously, and a strategy calibrated to one regime will not transfer automatically.
Under OFAC, a designated person may submit a reconsideration request to OFAC's Office of Global Targeting, arguing that the designation criteria are not met or that the underlying facts have changed. OFAC conducts an internal review. There is no equivalent of the UK judicial review route for individual designation decisions; the primary external legal challenge is a petition to the federal courts arguing that OFAC exceeded its statutory authority or violated procedural-due-process requirements. The evidentiary exchange in the US process is also limited, though the designated person can submit evidence in support of reconsideration.
The EU route is structurally different again. Designations are made by the Council of the European Union by unanimity. The designated person can submit representations to the Council seeking review. More significantly, they can bring an annulment action before the EU General Court challenging the Council Decision and the Council Regulation that implements the designation. The General Court applies a proportionality analysis and can examine whether the Council had sufficient factual evidence. Timing rules under the Treaty apply to annulment actions, and a late filing will be rejected on admissibility grounds without reaching the merits.
Three practical divergence points matter most. First, the legal standard: the UK "reasonable grounds to suspect" test is lower than the EU proportionality standard applied by the General Court, which means the evidentiary bar for the initial designation is lower in the UK but the review is less constrained by deference. Second, the forum: the EU route goes to an independent court with full jurisdiction; the UK administrative review goes back to the executive, with judicial review as the external check. Third, confidential intelligence: all three regimes may rely on intelligence not disclosed to the designated person, but the procedural safeguards around this vary. For a comparative analysis of designation challenges under the Swiss SECO regime, see our guide on challenging the designation criteria under SECO.
Where a business or individual faces parallel designations across multiple regimes, the sequencing of challenges matters. A successful administrative review in the UK does not automatically produce a delisting in the EU or the US. Conversely, a failed challenge in one jurisdiction does not formally bind the others, but the evidential record generated in that process will be scrutinised in every subsequent review.
What Are the Key Risk Flags Before and During a Challenge?
Several risks arise regularly in designation challenges, and identifying them early reduces the chance of a procedurally avoidable failure.
The first and most serious is delay. The prompt-filing requirements for judicial review are strict. An administrative review can be initiated at any time – there is no statutory limitation period for seeking revocation – but pursuing administrative representations for a long period and then moving to judicial review late can create problems with the court's time-limit analysis. Where litigation is a realistic possibility, the litigation clock should be considered from day one.
The second risk is incomplete ownership analysis. A designation of an individual frequently has consequences for entities that individual owns or controls. The ownership and control test (the UK and EU test for whether a non-listed entity is caught through a listed person) under UK financial-sanctions law operates by reference to both ownership and control. Where a director or shareholder is designated, the compliance team must map the full ownership and control picture, not just the immediate asset freeze.
The third risk is a poorly scoped licence application. A specific licence application that is framed too narrowly – for example, seeking to meet only an immediate payroll obligation rather than all foreseeable operating costs during the review period – may leave the business unable to function pending a decision. Licence applications should be drafted to cover the realistic operating needs of the relevant period.
The fourth risk is inadvertent breach during the review process. A designation does not pause its legal effect while a challenge is under way. All prohibitions continue to apply. Any transaction – including paying legal fees incurred in the challenge itself – requires either a licence or confirmation that an applicable general licence covers it. A general licence (a standing authorisation that permits a defined category of transactions without a separate application) may cover certain legal and professional fees, but the scope and conditions must be verified. Treating a general licence as broader than it is can produce an inadvertent breach that complicates the challenge.
The fifth risk is failing to identify the cross-border dimension early. A UK-designated person may also face secondary-sanctions risk under OFAC, or parallel designations under EU law, without those connections being surfaced at the outset. Where a counterparty is also subject to US-person restrictions or EU-operator restrictions, the challenge strategy must account for the full picture from the start.
If a transaction has already been frozen, or a filing has been refused, an early review can preserve options that narrow with time. Contact Calder & Vance at info@caldervance.com for a confidential assessment of the available routes.
Common Misconceptions About Challenging an OFSI Designation
One persistent myth in this area is that a designation challenge is futile unless the designated person has "new evidence" that did not exist at the time of designation. This misreads the legal position. The Secretary of State's review is not limited to newly discovered facts; it can address whether the original decision was correct on the facts that were available, whether the criteria were properly applied, and whether the legal test was met at all. A designation that rested on a factual error present from the outset is challengeable on those original facts, even if nothing has changed since.
A second misconception is that once a person is designated, all business dealings with that person's group are automatically prohibited. The position is more nuanced. The UK ownership and control test looks at whether the designated person owns or controls the relevant entity, applying both a percentage-ownership limb and a broader control analysis. Entities that are not owned or controlled by the designated person – even if they have commercial relationships with that person – are not automatically caught. The analysis must be conducted entity by entity, not assumed. We regularly advise clients on exactly this mapping exercise, and the results often differ from initial assumptions.
A third misconception is that engaging OFSI directly about a potential designation challenge signals guilt or invites closer scrutiny. In practice, proactive engagement – properly structured, through the correct channel, with a clear evidential basis – is standard. It does not prejudice a subsequent judicial review. What does carry risk is engaging in an unstructured way, making concessions in correspondence that are later relied upon, or submitting representations that are factually inconsistent with documents already in the public domain.
When Should You Involve Counsel – and What Will They Do?
The right time to involve sanctions counsel is before the first submission to the Secretary of State, not after an initial representation has been rejected. Early involvement allows the evidence package to be built correctly from the outset, the available routes to be assessed in parallel, and any time-sensitive judicial review window to be preserved.
In practice, the work a sanctions lawyer undertakes in a designation challenge covers: assessing whether the legal criteria are met on the available facts; mapping ownership and control across the relevant group; identifying all applicable licensing routes during the review period; preparing the written representations to the Secretary of State; advising on the judicial review window and, where appropriate, preparing the legal challenge; and managing the interface between the UK challenge and any parallel review in a second jurisdiction.
For businesses that identified a potential designation before it was confirmed – perhaps through a media report or a tip from a counterparty – early advice on the pre-designation steps can also be valuable. There are specific steps that can be taken to put relevant evidence before the decision-maker before a designation is made, not only after it.
Our practice regularly advises on multi-jurisdictional designation challenges, including matters that span the UK, EU, and US regimes. For guidance on the Singapore designation-challenge process, which is relevant where a group's interests extend into South-East Asia, see our guide on challenging the designation criteria under the Singapore regime.
Related practices
- Delisting evidence package – Australia – structuring the documentary file for an Australian autonomous-sanctions delisting request
- Designation criteria challenge – SECO (Switzerland) – the Swiss administrative review route and procedural differences from the UK model