Nominee Directors, Shell Companies and Complex Structures: AML Risks

Nominee directors, nominee shareholders and shell companies are not illegal, and plenty of them have ordinary commercial reasons to exist. They are also among the structures that supervisors and professional bodies single out when they talk about money laundering risk, because they can put distance between a company and the person who really controls it. If your clients use them, or your firm provides company formation services, you need to know what to ask and what to record. This guide explains the risks, what HMRC says its inspectors expect to see, the red flags to watch for, and a practical set of questions for client files. It draws on HMRC's Economic Crime Supervision Handbook and on ACCA's 2026 article on common AML red flags. Guidance changes, so check your supervisor's current requirements. This is general information, not legal advice.

Why these structures draw attention

HMRC's handbook explains that nominees can legitimately conceal owners, but that they can also let criminals, and people barred from company roles, hide their involvement, evade bans or sanctions, and stay out of public records. It also notes that nominees may act as "paper figureheads" rather than performing the duties of a director or shareholder, while legal responsibility still rests with the person recorded at Companies House. Using nominees to hide identities is treated as increased risk, so firms that provide these services need robust procedures to mitigate it.

ACCA's list of red flags includes nominee shareholders, shell companies, trusts and unnecessarily complex ownership designed to obscure beneficial ownership. It also lists high-risk or non-resident connections, offshore structures with limited transparency, and related overseas entities controlled by a UK company's owners without a formal group link. Our guide to money laundering red flags for accountants puts these into context.

If your firm provides the services

Where an accountancy practice forms companies, sells off-the-shelf companies, or supplies a registered office, directors, company secretary or nominee shareholders, it is carrying out trust or company service provider (TCSP) work. According to HMRC, inspectors expect to see that you:

• understand all of the services you provide, including how each is risk assessed alone and in combination with others, and how those risks are managed;
• can show record testing across every service type, including formation, nominee services and off-the-shelf sales; and
• can explain any departure from published guidance.

HMRC adds that TCSPs must risk assess the customer, their business relationships and their transactions, so that they do not facilitate money laundering, terrorist financing or proliferation financing, and that they must understand ultimate beneficial ownership when they deal with entities. The 2026 amendments to the Money Laundering Regulations also made selling off-the-shelf companies a regulated TCSP activity, which we explain in our guide to the 2026 changes to the Money Laundering Regulations. If you sell shelf companies as an add-on, confirm that your registration and risk assessment cover it.

HMRC also observes that nominee services are often advertised online, sold through formation agents, charged as annual fees, and bundled with formation, mailbox and off-the-shelf packages, sometimes at bulk discounts. A client who asks you for a bundle should be asked why.

Companies House identity verification

HMRC's handbook notes that Companies House identity verification is being phased in from spring 2025. That helps make the register more reliable, but it does not replace your own checks. HMRC is clear elsewhere that register entries alone are not enough to confirm beneficial ownership, and that you must use other sources under regulation 28(9).

Questions to ask on a client file

When you meet a structure that includes nominees or a shell, build your file around a short set of questions:

1. Who ultimately owns and controls the company? Trace it to individuals, and verify them.
2. Why are nominees used? A clear, believable commercial reason, such as privacy for a lawful investor, is different from "it is easier".
3. Who instructs the nominees? Ask for the nominee arrangement or declaration of trust, and identify the person who gives instructions.
4. Does the company trade? A company with no staff, premises or revenue that still moves large sums needs an explanation.
5. Where is the money from and going? Look for unexpected links to higher-risk jurisdictions or unrelated third parties.
6. Does the structure make sense? Each layer should have a purpose that you can write down.

If you cannot answer these questions, the structure is too opaque for your firm to act, and regulation 31 may apply. Our guide to client risk rating, acceptance and exit explains what to do next, and our guide to ultimate beneficial ownership for accountants explains how to trace owners.

Enhanced due diligence

Many nominee and shell structures will justify an enhanced approach under your risk rating. HMRC describes enhanced due diligence as obtaining additional verification from independent, reliable sources, learning more about the client's background, ownership and financial position, confirming that the transaction matches the stated purpose, and increasing monitoring. Whether a particular structure is high risk is a judgement for your own risk assessment, so record the reasons either way.

Recording your reasoning

A file note should state what the structure is, why the client uses it, what evidence you obtained to support that explanation, who the beneficial owners are, how you verified them, and what rating you gave. A clear note is what lets you show your supervisor why you accepted the structure.

If your team deals with company formation or structured clients, our CPD courses can help build the skills.

Frequently asked questions

Are nominee directors illegal?

No. HMRC's handbook says nominees can be used legitimately. They increase risk because they can also hide the people involved.

Is a shell company always suspicious?

No. A company with no operations can have a legitimate purpose, but it needs a clear explanation. ACCA lists shell companies among the structures that can be used to obscure ownership.

Does selling an off-the-shelf company count as regulated work?

Yes. The 2026 amendments made selling off-the-shelf companies a regulated TCSP activity, according to ICAEW and ACCA guidance.

Can I rely on the Companies House register to identify owners?

Not on its own. HMRC says register entries alone are not enough under regulation 28(9).

Who is legally responsible if a nominee is used?

HMRC's handbook says legal responsibility still rests with the person recorded at Companies House.