What Is a PSC? Understanding the Persons with Significant Control Register for UK Companies

Setting up a new company in the UK is an exciting venture - but there’s a key legal requirement you can’t afford to overlook: identifying your company’s “PSC” and maintaining your Persons with Significant Control (PSC) Register.

If you’re feeling a bit lost wondering “what is a PSC?” or how this duty fits with your other registration obligations, don’t worry. Many new business owners ask the same questions, and understanding the basics is easier than you might think. With the right guidance, you’ll get your company’s legal foundations sorted and stay compliant with Companies House from day one.

Let’s unpack what a PSC is, why the PSC Register matters, and how you can keep your company protected and on the right side of UK law.

What Is a PSC? The Basics Explained

PSC stands for “Person with Significant Control.” In plain English, a PSC is someone who holds substantial power over a UK company - either through ownership, voting rights, or the ability to influence decisions. UK law requires every company (and some LLPs) to identify its PSCs and keep this information up to date in the PSC Register.

This legal requirement came into effect with the Small Business, Enterprise and Employment Act 2015. The main aim? To boost corporate transparency and reduce the risk of illegal activities like money laundering or tax evasion by making sure you know - and can show - who really pulls the strings in your company.

Every company, whether just one director or an international group, must maintain a PSC Register. This rule also applies to companies limited by guarantee and some other legal entities, so it’s vital to check your obligations before launching.

How Do I Know Who Is a PSC in My Business?

So, what actually qualifies someone as a Person with Significant Control? There are three main criteria set out by UK legislation. Anyone who meets ONE or more of the following is a PSC:

• Ownership of shares: Holds more than 25% of the shares in the company.
• Ownership of voting rights: Has more than 25% of the voting rights in the company.
• Right to appoint or remove directors: Has the right (directly or indirectly) to appoint or remove a majority of the board.

Two additional, less common criteria can also apply (for example in some trust or partnership scenarios - if that’s you, get legal advice):

• Significant influence or control: Holds the right to exert, or actually exerts, significant influence or control over the company.
• Significant influence or control over a trust or firm: Can direct the activities of a trust or firm that itself meets one of the above criteria and is not a legal entity.

Most small businesses will find their PSCs based on the first three criteria - direct share ownership, voting rights, or director appointment powers.

If you’re unsure how to determine shares or voting rights, or have a more complex business structure (like indirect ownership through another company or trust), it’s wise to seek tailored legal advice. Setting up your company group structure right from the start is key to staying compliant in the long run.

Why Does the PSC Register Matter for My Company?

The PSC Register isn’t just more paperwork. It plays a crucial role in your company’s legal compliance and reputation. Here’s why:

• Legal requirement: UK law requires all companies to keep an accurate PSC Register - failing to do so can lead to criminal penalties for both directors and the company.
• Corporate transparency: Customers, investors, and regulators can gain more trust in your business knowing who holds real control.
• Filing with Companies House: Part of your annual Companies House filings includes up-to-date PSC details.
• Access to funding and partner opportunities: Lenders and potential partners will often check your PSC Register for compliance before working with you.

Making sure your PSC Register is spot-on isn’t just about tick-box compliance - it’s a vital foundation if you want your business to grow and avoid risks.

What Information Goes in the PSC Register?

Your PSC Register is more than just a list of names. For every PSC, you’ll need to record specific details, including:

• Full name
• Date of birth
• Nationality
• Country or state of usual residence
• Service address and usual residential address (the residential address is only shared with law enforcement, not on the public record)
• Date the individual became a PSC of the company
• Nature of their control (for example, "holds more than 25% of shares")
• Any restrictions on disclosure (which are rare but can apply for serious security risks)

The PSC Register must be kept up to date and accessible. Usually, it’s held at your company’s registered office. You’ll also file the relevant PSC information with Companies House, where it will become a matter of public record (except for some personal details, like the PSC’s residential address).

How Do I Set Up and Maintain the PSC Register?

Setting up your PSC Register is a step you’ll handle as part of your initial company registration. Here’s how to get started:

1. Identify who your PSCs are using the criteria above.
2. Gather all the required details for each PSC.
3. Enter PSC information into your company’s PSC Register (which can be a physical or digital list, as long as it’s accessible).
4. Submit PSC details to Companies House when you incorporate and file your annual Confirmation Statement (CS01).
5. Keep your Register updated - you must update both the company Register and Companies House within 14 days of any changes.

For more on how to form a company in the UK and register with Companies House, check our complete guide.

What Happens If I Get the PSC Register Wrong?

Not keeping your PSC Register accurate and up to date can have serious consequences. UK company law treats this as a criminal offence. Company directors and designated members (for LLPs) can be:

• Fined (the penalties are unlimited)
• Convicted of a criminal offence
• Disqualified from company directorships in serious or repeated cases

It’s not worth the risk! Keeping clean records and communicating promptly with your PSCs (or anyone who might be a PSC) will ensure you’re always on the right side of the law. If in doubt about any complex arrangements - like indirect holdings, trusts, or overseas entities - get legal advice early.

How Does the PSC Register Affect Small Companies and Sole Directors?

Even if you’re the sole director and shareholder of your own company, you still need to create a PSC Register. In most cases, you’ll be the only PSC - so you’ll record your own details and keep them updated.

For owner-managed companies (sometimes called “single director” companies), setting up and maintaining a PSC Register is a straightforward part of the company secretarial duties. Don’t overlook it, and don’t assume it’s only for larger businesses - the rules apply to registered companies of all sizes.

If you’re considering whether to run your business as an individual (sole trader) or to form a company, check out our clear guide comparing sole trader vs company structures.

Are There Any Exceptions to the PSC Register Requirement?

Most UK-registered companies and LLPs need a PSC Register, but there are some exceptions:

• Traded companies (with shares listed on major stock exchanges) usually follow different disclosure regimes.
• Some overseas companies and public sector bodies may be exempt.

But for almost every startup or small business registered as a limited company, the PSC Register is a non-negotiable requirement. If your business model is more complex (such as charities, social enterprises, or groups with international ownership), get advice on your particular obligations.

What Do I Do If My PSC Details Change?

PSC information can change if:

• You issue new shares, or someone acquires more than 25% of shares or voting rights
• Someone gains or loses the right to appoint directors
• A control agreement or partnership changes in nature

When this happens, you must:

• Update your internal PSC Register within 14 days
• Report the change to Companies House within another 14 days (i.e., within 28 days total)

It’s a good idea to make this part of your regular statutory compliance checklist. Staying organised from the start will help your business avoid fines and delays when it’s time to raise funds or bring in new partners.

How Can I Make Sure My PSC Register Is Legally Compliant?

To keep your PSC Register accurate and legally compliant:

• Get the structure of your company (and any holding companies or group structure) right from the start
• Clearly identify all PSCs and get full details for the register
• Double-check indirect holdings or complex arrangements with a knowledgeable advisor
• Keep your register up-to-date with all changes, even if ownership shifts or control changes are minor
• Have robust Articles of Association and Shareholders Agreements in place to help clarify roles and rights

Remember, having professionally prepared legal documents like a company constitution or a tailored shareholders agreement can make reporting and compliance a lot smoother. Avoid using DIY templates - these rarely cover all the bases for UK compliance and can leave you exposed to risks or missed obligations.

Do I Need to Tell Anyone Outside My Company About My PSC Register?

Yes. The main audience for your PSC information is Companies House, which makes much of the PSC Register public (with key details withheld for privacy).

You may also need to provide your register to:

• Bankers or lenders (as part of due diligence when applying for a loan)
• Potential investors or acquirers
• Solicitors or accountants helping with new agreements or business structuring
• Regulatory authorities

It’s therefore crucial that your PSC Register is accurate. Incorrect or incomplete filings can cause delays or raise red flags - and might even prevent a deal, partnership, or funding round from going forward.

Key Takeaways

• A PSC (Person with Significant Control) is anyone with substantial ownership, voting rights, or control in your company.
• All UK companies must maintain an up-to-date PSC Register and file relevant information with Companies House.
• The Register includes detailed information about each PSC and must be updated when there are changes in ownership or control.
• Failing to comply can attract criminal penalties and seriously undermine your company’s credibility.
• Good legal foundations - like strong Articles of Association and shareholders agreements - make ongoing PSC compliance much easier.
• Seek tailored legal advice, especially for complex structures, group companies, or non-standard PSC arrangements.

If you’d like help understanding what is a PSC, setting up your company, or managing compliance for your growing business, feel free to reach us at team@sprintlaw.co.uk or call 08081347754 for a free, no-obligation chat with our team of expert lawyers. Sprintlaw is here to make corporate compliance simple and support your business success from day one.