Understanding Persons with Significant Control in Practice

A PSC is anyone who holds more than 25% of the shares or voting rights, has the power to appoint or remove the majority of directors, or otherwise exercises significant influence or control over the company. This includes individuals, but also trusts, partnerships, or other legal entities that meet the criteria.

For a typical London limited company, say a small accountancy practice or a buy-to-let property holding company, identifying PSCs seems straightforward at first. Yet in real client scenarios, it often gets complicated. Take the case of a client I worked with last year – a family-run restaurant group in central London. The founder held 60% of the shares, with two adult children each holding 20%. When one child wanted to sell part of their stake to a business partner, we had to update the internal PSC register within 14 days and notify Companies House shortly after using the specific PSC forms. We didn't wait for the confirmation statement.

This separation matters because the confirmation statement primarily confirms the position as it stands. You review the period since your last filing (or from incorporation for new companies) and state that the details are correct, or highlight where updates have already been made through other filings. Attempting to use it as the vehicle for initial PSC notifications will leave your records out of date and could trigger compliance issues.

The Confirmation Statement Process for London Companies

Every UK company, including those with registered offices in London, must file a confirmation statement. The review period runs for 12 months, and you have 14 days after that period ends to make the filing. Many of my clients file around their accounting reference date to keep things tidy, but there's flexibility.

What can you actually update or confirm in the statement? You can include details like the company's SIC codes if they've changed, the statement of capital, shareholder information (in some cases), and confirm that the PSC details already held are accurate. But major shifts in ownership control require proactive notification.

From a tax adviser's perspective, this isn't just administrative box-ticking. Inaccurate ownership records can affect how HMRC views the company for corporation tax purposes, especially around associated companies rules, loss relief restrictions after a change in ownership, or even stamp duty land tax implications for property-heavy businesses common in London.

I've seen cases where delayed PSC updates complicated capital gains tax calculations on share disposals. A client selling part of their London property development company discovered that mismatched records at Companies House raised questions during due diligence, delaying the deal and increasing professional fees.

Key Deadlines and Practical Timelines

You must act quickly on changes. Update your company's internal PSC register within 14 days of becoming aware of the change, and notify Companies House within a further 14 days. This is a strict legal obligation.

The annual confirmation statement in the uk itself doesn't carry the same automatic late filing penalties as accounts, but failing to file one at all is a criminal offence. Directors can face prosecution, fines, and in extreme cases, the company could be struck off the register. For busy London professionals, that risk is real – I've had clients distracted by day-to-day operations who nearly fell foul of this.

Recent changes around identity verification add another layer. From late 2025 onwards, directors and PSCs generally need to verify their identity with Companies House before certain filings, including confirmation statements in some circumstances. This has caught several of my clients by surprise, particularly those with overseas connections or complex structures.

Tax Implications of Ownership Changes

As a tax practitioner, I always link Companies House compliance back to HMRC obligations. When ownership control shifts, it can trigger several tax events:

• Corporation Tax and Associated Companies: If a change brings new associated companies into play, it affects the corporation tax marginal relief thresholds. For the 2025/26 tax year, the small profits rate of 19% applies up to £50,000, with the main rate of 25% kicking in at £250,000, tapered in between depending on the number of associated companies.

• Capital Gains Tax on Share Transfers: London business owners often transfer shares between family members or to new investors. This can crystallise a CGT charge, though business asset disposal relief (formerly entrepreneurs' relief) might apply at 18% for qualifying disposals after April 2026, subject to lifetime limits and conditions.

• Stamp Duty Considerations: Share transfers can attract stamp duty at 0.5% on the consideration, which needs careful handling in documentation.

One practical example from my files involves a fintech startup in the City. The founders diluted their stakes to bring in venture capital. We updated the PSC details immediately, filed the confirmation statement later to confirm everything, and ensured the corporation tax computation reflected the new structure without any nasty surprises around group relief or substantial shareholdings exemption.

Continuing from the real-world compliance picture, let's look deeper into how these rules play out for different types of London businesses and what steps you should take to stay on the right side of both Companies House and HMRC.

Common Scenarios I've Encountered with London Clients

Property landlords and developers make up a large part of my London practice. A typical issue arises when a buy-to-let company restructures ownership, perhaps transferring shares to a spouse or trust for inheritance tax planning. The PSC update must happen promptly. Waiting until the annual confirmation statement could mean the public register shows outdated control information, which might concern banks providing mortgages or potential buyers during a future sale.

In one case, a client with several central London flats in a limited company overlooked notifying a change after a divorce settlement. When they came to refinance, the lender's due diligence flagged the discrepancy. It took extra time and legal costs to rectify, all of which could have been avoided with timely filings.

Self-employed individuals incorporating their businesses also need careful guidance. Many sole traders in creative industries or consulting move to limited company status for liability protection and tax efficiency. The initial PSC filing happens at incorporation, but any subsequent changes – like issuing new shares to bring in a partner – require separate notifications.

Shareholder Information Versus PSC Details

There's sometimes confusion between updating shareholders and PSCs. The confirmation statement can be used to report certain shareholder changes that occurred during the review period, particularly the statement of capital and trading status of shares. However, if those changes result in new PSCs or alterations to existing ones, you must handle the PSC aspects separately and in real time.

This distinction matters for compliance. A company might have many shareholders below the 25% threshold, so their details can be updated via the confirmation statement in some contexts, but anyone crossing into significant control territory triggers the faster PSC process.

The Role of Professional Advice in London’s Business Environment

London's diverse economy – finance, tech, hospitality, real estate – means one-size-fits-all advice rarely works. A family business in Wandsworth faces different pressures than a VC-backed startup in Tech City. Yet the Companies House rules apply uniformly.

I always recommend my clients maintain meticulous internal records. This includes keeping the company's PSC register up to date at the registered office (or central records if elected), with details of how each PSC meets the conditions, their date of birth (month and year only on the public register), nationality, and correspondence address.

For overseas owners, which are increasingly common in London property companies, additional scrutiny applies. Non-UK residents must still comply fully, and identity verification requirements can add complexity.

Filing Methods and Costs

Most of my clients file electronically through the Companies House online service or via their accountant using software. The standard fee for a confirmation statement is £34 if filed electronically, or higher on paper. You can file more frequently than annually if needed, but you only pay once per review period in most cases.

When changes occur, using the specific forms (PSC01 for registering an individual PSC, for example) ensures the update is recorded properly. Then, when the confirmation statement is filed, you simply confirm that the information now held is correct.

Table: Key Thresholds and Timelines for PSC and Confirmation Statements (Current Rules)

This table summarises the main practical points I discuss with clients. Figures and thresholds reflect rules as they stand in 2026, but always check for annual updates as tax bands and allowances can shift.

Linking to Broader Tax Compliance

Ownership changes don't exist in isolation. They can impact self-assessment for individual directors if dividends or salary change, or corporation tax computations for the company. For landlords, accurate company records support claims for property income allowances or capital allowances on fixtures.

In practice, I review a client's Companies House position alongside their HMRC filings during annual tax planning meetings. This joined-up approach prevents nasty surprises, such as HMRC querying beneficial ownership during a compliance check or lenders pulling financing due to red flags on the public register.

For businesses in London particularly, where property values and deal activity remain high, getting ownership control information right supports smooth transactions. Whether you're preparing for an eventual exit, raising investment, or simply ensuring good governance, the confirmation statement plays a supporting role rather than a starring one in updating control details.

Staying proactive saves time, money, and stress. If your company's ownership structure has evolved recently or you're planning changes, reviewing the position now rather than leaving it until the next confirmation statement deadline makes sense from both a legal and tax efficiency standpoint.