A1.5: What is your organisation's registered address?
What is your organisation's registered address?
Source: IASME Cyber Essentials Danzell question set v16.3
A1.5 needs the legal registered address of the primary entity in A1.1, exactly as it appears on Companies House or the relevant register. It is often an accountant's or solicitor's office rather than where you work. Your working locations go in A1.5.1, and home workers' addresses are never listed.
Is A1.5 an automatic fail?
No. A1.5 records information about your organisation and is not marked against a technical requirement, so no answer to it fails the assessment. Inaccurate or contradictory details may be returned by the assessor for correction.
- Answer type
- Notes a notes question, answered in free text
- IASME guidance
- Please provide the legal registered address for your organisation.
- Requirement enforced
- Section A1 collects the details that appear on the certificate and shape which later questions are shown.
- Outcome if non-compliant
- Not marked against a requirement; inaccurate details may be returned for correction
What does A1.5 ask?
A1.5 asks: “What is your organisation's registered address?”
A1.5 asks for your organisation's registered address. IASME's guidance is a single line: provide the legal registered address for your organisation.
For a company that is the registered office address on Companies House. It does not need to be a site you operate from, and many small companies use their accountant's address. Your actual offices, warehouses or shops go in A1.5.1, which feeds the network questions in A2.3.
What should you write in the notes field for A1.5?
Write two to four specific sentences for A1.5: what you do, who owns it, how often it happens and the record that proves it.
A model answer to adapt. Replace everything in square brackets with your own facts, and delete anything that is not true.
[Registered office address exactly as on the register, including postcode]
What mistakes do applicants make with A1.5?
A common mistake with A1.5: giving the head office trading address when the registered office is elsewhere.
- Entering a home worker's address, which A1.5.1 guidance says is not required.
- An address that has changed on Companies House but not on the application.
- Leaving out the postcode or country for an overseas registration.
How do you get A1.5 right?
Work through these steps before you enter A1.5 in the portal:
- Copy the registered office address from the register entry, including the postcode.
- Put trading sites in A1.5.1 instead.
- If the registered office has changed recently, update Companies House first so the two match.
How do assessors check A1.5?
What evidence should you keep for A1.5?
The self-assessment does not ask you to upload evidence, but the assessor can ask for clarification, a director signs the attestation, and Cyber Essentials Plus tests the same controls. Keep this on file for A1.5:
- The register extract showing the registered office address.
Where to go next
Other A1 questions
- A1.3A1.3NotesHow many employees are there in the organisation?Notes
- A1.4A1.4NotesWhat is your organisation's registration number?Notes
- A1.5.1A1.5.1NotesPlease provide the operational addresses, if different to your registered address.Notes
- A1.6A1.6Yes/NoDo you have more than one legal entity, including subsidiaries, within the scope of this assessment?Yes/No
Frequently asked questions
A1.5 in the 2026 Danzell Cyber Essentials question set asks: "What is your organisation's registered address?" It is a notes question, answered in free text.
A1.5 needs the legal registered address of the primary entity in A1.1, exactly as it appears on Companies House or the relevant register. It is often an accountant's or solicitor's office rather than where you work. Your working locations go in A1.5.1, and home workers' addresses are never listed.
No. A1.5 records information about your organisation and is not marked against a technical requirement, so no answer to it fails the assessment. Inaccurate or contradictory details may be returned by the assessor for correction.
Not necessarily. The registered address is the legal address on the register. If you work from a different site, give that in A1.5.1 as an operational address.
No. Neither A1.5 nor A1.5.1 includes home or remote workers' addresses. Home workers are counted in A2.4.1 instead.
Would you pass the 2026 question set?
Answer 24 yes or no questions, built by the assessors who mark Cyber Essentials, and get a readiness score in about five minutes, with any auto-fail questions you miss flagged first in your results.
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