How to track verification you didn't carry out

Your clients will verify through several routes, and most of them won't tell you when they do. The good news: Companies House's public data records every verification, so you can monitor the whole portfolio without becoming an ACSP.

There is a quiet assumption built into a lot of ECCTA planning: that your firm will carry out its clients' verifications, so you will know they are done. In practice you will not perform most of them. Directors verify themselves online, sometimes months before you would have got to them, and they rarely send a note to confirm it. If your records only show what you did, they are blind to everything the client did alone. Reading Companies House's public data fixes that.

Why you can't just rely on verifications you perform

You will not be the route for every verification, so tracking only what you do leaves gaps. Some clients will verify through your firm if you are an ACSP. Many directors will verify themselves through GOV.UK One Login, on their own schedule, without telling you. A few will be verified by another adviser. Unless you are reading Companies House's data, those routes are invisible, and a verified client looks identical to an overdue one on your spreadsheet.

Verification arrives by several routes, all recorded in one place

However a person verifies, Companies House's data carries the record.

Client self-verifies GOV.UK One Login Your firm verifies if you are an ACSP Another adviser verifies outside your firm Verification start date in Companies House data You read it
You don't have to control how a client verifies. You only have to read the one place that records all of it.

What Companies House's public data actually shows

When a director or PSC completes verification, a verification start date is recorded against that person's appointment in Companies House's public company data. It is the reliable, public indicator that the person has verified, and it is present on the appointment regardless of which route they used to do it. That single property is what makes portfolio monitoring possible: you are reading an official status, not chasing people for confirmation.

The verification start date sits on the appointment record, so it is readable per company without any special access. This is the field worth monitoring at scale, because it does not depend on how or where the person verified.

Monitoring without becoming an ACSP

You do not need to be an Authorised Corporate Service Provider to monitor verification. ACSP status lets you carry out verifications yourself and take on the duties that come with that role. Monitoring is a different job: it only requires reading Companies House's public company data, which anyone can do. For firms that want oversight of client compliance without taking on ACSP obligations, read-only monitoring is the lighter path. We weigh the two routes in tracking verification across your clients.

Turning the register into a portfolio view

Reading one company's register is easy. Doing it across hundreds of clients, repeatedly, is the real work, because the register changes constantly as people verify. The workflow that scales is the same four steps whether you do it by hand or with a tool. The point of all four is to turn a pile of individual lookups into a single status you can act on.

  1. List every appointment, not every company. Pull each director and PSC across the portfolio, because the signal lives on the appointment.
  2. Read the verification start date for each. Check whether the appointment carries a verification start date, so you know who is already done.
  3. Compare against the deadline. Set each person's status against their window (confirmation statement or birth month) to surface who is overdue versus due soon.
  4. Refresh regularly. The register moves daily as people verify, so a one-time read is stale within weeks. Re-read on a schedule and let statuses update themselves.

See every client's verification status, however they verified

GreenlitKit reads Companies House's public data across your whole portfolio and shows verified, due, and overdue in one traffic-light view, no ACSP status required. Built for UK accountancy firms.

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Frequently asked questions

Can I see whether a client has verified if they did it themselves?

Yes. When a director or PSC verifies their identity, a verification start date is recorded against their appointment in Companies House's public company data. That date is available for any company, so you can confirm a self-verification even if the person did not tell you.

Do I have to be an ACSP to monitor my clients' verification?

No. Becoming an Authorised Corporate Service Provider lets you carry out verifications yourself, but it is not required to monitor whether clients have verified. Monitoring relies on reading Companies House's public company data, which anyone can do without ACSP status.

Why can't I just rely on verifying clients myself?

Because you will not perform every verification. Many directors verify themselves through GOV.UK One Login without involving you. Unless you read Companies House's data, those self-verifications are invisible, and you cannot tell a verified client from an overdue one.

B
Ben Morton

Founder of GreenlitKit and ToggleKit Ltd, building portfolio-level ECCTA verification tracking in the open using live Companies House data.

Sources

  1. GOV.UK: When you need to verify your identity for Companies House (updated 18 November 2025).
  2. Companies House blog: Understanding identity verification for people with significant control (PSCs) (16 January 2026).

This article is general guidance, not legal or compliance advice. Always confirm dates against current Companies House guidance, which has changed during the rollout.