The Deadline That Is Not on Most Compliance Calendars
Ask a UK practice owner what is occupying them right now and you will hear about quarterly updates, the Autumn Budget on the 28th of October, and the January filing season creeping into view. What you are far less likely to hear about is the 18th of November 2026. That is the day the 12-month Companies House identity verification transition period closes, and it applies to almost every incorporated client on your list.
Identity verification became a legal requirement on November 18th 2025. That date did not switch everything on at once. It opened a transition year, designed to let existing directors, LLP members and people with significant control verify at a sensible point in their own filing cycle. That year is now down to its final eight weeks.
If a client's verification has quietly slipped through the net, the consequences do not stay theoretical. They surface the next time you try to file something on that company's behalf.
Who Has to Verify, and by When
There is no single date that applies to everybody, which is exactly why this one gets missed. The timing depends on the role the individual holds.
- Existing directors and LLP members: they must verify their identity and their personal code must be provided with the company's next confirmation statement dated on or after November 18th 2025. For companies with a late autumn confirmation statement date, that moment is arriving now.
- Existing PSCs who are not also directors of the same company: this is the trap. Their window is not tied to the confirmation statement at all. It runs for 14 days starting from the first day of their month of birth, as recorded on the Companies House register. A PSC born in November has a window that opens on November 1st 2026 and closes fast.
- People who are both a director and a PSC of the same company: the confirmation statement route governs, with the PSC element sitting in a 14 day period beginning the day after the confirmation statement date.
- New appointments: anyone appointed as a director since the rules commenced must already be verified before the appointment is notified, so these should be clean. Check anyway.
One more point worth flagging to clients who file their own paperwork: once the transition closes, filings can only be made by verified individuals or by an Authorised Corporate Service Provider. An unverified director cannot simply log in and submit.
Why the Birth Month Rule Causes the Most Damage
Most firms have built their Companies House workflow around confirmation statement dates, because that is the rhythm the register has always run on. The PSC birth month rule cuts across that rhythm entirely.
Consider a family trading company where a spouse holds 40 per cent of the shares but is not a director. Nothing in your confirmation statement workflow will prompt you about that person. Their obligation is triggered by their month of birth, and the 14 day window is genuinely short. Corporate structures with holding companies, non-executive shareholders, family investment companies and property partnerships are the highest risk, because ownership and management rarely sit with the same people.
The practical fix is simple but it is not automatic. You need a list of individuals, not a list of companies.
What Happens if a Client Misses It
Failing to verify when required is not a paperwork irregularity. Acting as a director without having verified is an offence under the Economic Crime and Corporate Transparency Act, and Companies House has a financial penalty regime it can apply, alongside its power to annotate the public register. An annotation is visible to lenders, insurers and counterparties, which for many owner-managed clients is the sting that lands hardest.
There is also a very ordinary commercial consequence. If a code is missing or has not been correctly linked to the individual's record, the confirmation statement does not go through. If the confirmation statement does not go through, the company drifts towards default and the register shows it. That becomes your problem at the worst possible moment, because the queries will arrive in December and January when your capacity is already committed elsewhere.
Your Eight Week Sweep
This is a data exercise before it is a compliance exercise. Run it in this order.
- Build the individual level list. Extract every director, LLP member and PSC across your corporate client base. Include the recorded month of birth for PSCs, because that is what drives their window.
- Sort by trigger date, not by client. Directors go into a confirmation statement queue. Non-director PSCs go into a birth month queue running from October through to November 18th and beyond.
- Confirm which codes you actually hold. A verified individual is not the same as a verified individual whose personal code has been provided and linked. Verification without linkage still stops a filing.
- Identify the hard cases early. Overseas directors, clients without suitable photographic identification, and anyone who cannot complete GOV.UK One Login will take considerably longer. These people need contacting this week, not in November. Where your firm is a registered ACSP, you can verify them directly, which is often the fastest route.
- Write to clients once, clearly, with a named action. Generic reminders about Companies House reform get ignored. A message that says "you personally need to verify and send us your code by this date" does not.
- Record the evidence. Keep a note of who verified, when, and how the code was obtained and applied. Your AML file and your professional indemnity position both benefit from it, and codes are personal to the individual and must never be shared or stored loosely.
Turn the Sweep Into Something Useful
Here is the upside. To do this properly you have to look at every officer and beneficial owner across your client base and check that the register reflects reality. Firms that run this exercise routinely find dormant companies nobody has closed, resigned directors still showing as appointed, PSC statements that no longer match the share register, and shareholdings that changed hands years ago without anything being filed.
That is a conversation worth having. It leads naturally into share structure reviews, dividend planning, company closures, and succession questions. Clients who have just been prompted to prove who they are tend to be unusually receptive to a wider tidy-up of their corporate affairs.
It is also a strong argument for holding officer, PSC and confirmation statement data in one place inside your practice systems rather than across spreadsheets and email folders. When the next register reform arrives, and it will, the firms that can produce an individual level list in minutes will absorb it without drama.
The Bottom Line
Eight weeks is enough time to do this calmly and not enough time to do it in December. The clients most likely to be caught out are the ones who never contact you between confirmation statements: the quiet holding companies, the non-director shareholders, the overseas director on a client you inherited three years ago.
Pull the list this week. Sort it by trigger date. Deal with the difficult verifications first. Then walk into January with your corporate compliance in order, rather than fielding annotation queries while you are trying to file tax returns.
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