Yes, Companies House can reject or challenge a registered office address if it does not meet the legal requirements for an appropriate address. However, there is an important distinction between Companies House simply refusing to accept an address during incorporation or an address change, and the registrar later deciding that an existing registered office is not appropriate. In the latter situation, Companies House has powers to change the company’s registered office to a default address and, if the company does not correct the problem, potentially begin strike-off proceedings.

The rules became significantly more important following the Economic Crime and Corporate Transparency Act 2023, which strengthened Companies House powers and introduced a clearer statutory definition of an “appropriate address.” For founders, the practical lesson is straightforward: a registered office must be a real, usable address where official correspondence can reach someone acting for the company and where delivery can be acknowledged.

This guide explains what Companies House can reject, why an address may fail, what happens if the registrar challenges your address, and how to choose a registered office that is much less likely to create problems.

What Does Companies House Mean by an “Appropriate Address”?

Under section 86 of the Companies Act 2006, a company must ensure that its registered office is at an appropriate address at all times. The legal test has two main parts. An appropriate address is one where, in the ordinary course of events:

1. A document delivered by hand or post to the company would be expected to come to the attention of someone acting on behalf of the company.
2. Delivery of documents can be recorded by obtaining an acknowledgement of delivery.

Companies House's current guidance expresses the same principle in practical terms: someone acting for the company should become aware of post delivered to the address, and the sender should be able to obtain confirmation that the post was delivered. This means that an address does not become appropriate simply because it is a genuine physical location. The address must work as a functioning point of contact for the company.

Can Companies House Actually Reject a Registered Office Address?

Yes. Companies House has powers to reject an address where it is not satisfied that the address is appropriate. The registrar can also investigate an existing registered office if information suggests that it is not appropriate. The result can be more serious than simply refusing an application: Companies House may change the company's registered office to a default address held by Companies House.

This distinction matters because company founders sometimes assume that once an address appears on the Companies House register, it can never be challenged. That is not the case. Companies are required to maintain an appropriate registered office at all times.

What Types of Registered Office Addresses Can Be Rejected?

There is no simple blacklist of addresses that Companies House automatically rejects. Instead, the question is whether the particular address satisfies the legal requirements. Nevertheless, some types of arrangements create obvious problems.

1. A PO Box

A Royal Mail PO Box cannot be used as a registered office address under the current rules. Companies House also states that similar services from other providers cannot be used as substitutes. This is an important distinction between a physical registered office and a postal mailbox. A company may need an address where documents can actually be delivered, rather than merely a box for collecting mail.

Example

A founder selects:

PO Box 1234, London

as the company's registered office. The fact that the PO Box has a legitimate UK postcode or postal arrangement does not make it an appropriate registered office. A physical address that meets the requirements is needed instead.

2. An Address Where Nobody Handles Company Mail

An address may be physically real but still fail the practical test. Imagine that a company uses an office it left two years ago. The building still exists, but nobody connected with the company works there and official letters are routinely returned.

The problem isn't that the building doesn't exist. The problem is that documents sent there are not reasonably expected to reach someone acting for the company. That goes directly to the statutory definition of an appropriate address.

3. An Abandoned or Vacant Premises

A vacant property can create a similar problem. Suppose a startup originally operated from an office in Manchester. The founders later moved the entire business online and ended the lease, but forgot to update the registered office. Companies House continues sending official correspondence to the former premises.

If nobody receives or manages that correspondence, the registered office may no longer satisfy the appropriate-address requirement. The company should update its registered office rather than relying on the old address.

4. An Address Used Without Permission

Companies House may also require evidence that a company has proprietary rights or permission to use an address when dealing with certain registered-office disputes or changes. For example, imagine that a company lists an accountant's office as its registered office without the accountant's knowledge.

Even though the address is a genuine commercial property, the arrangement is problematic. Companies House guidance specifically refers to evidence such as ownership documents, a written agreement permitting use of the address, or other evidence of rights to use the property in relevant cases. The practical rule is simple: Do not put someone else's address on the Companies House register without a legitimate arrangement to use it.

5. An Address That Cannot Reliably Acknowledge Delivery

The second part of the appropriate-address test is sometimes overlooked. It is not enough for correspondence to theoretically arrive. The delivery of documents must also be capable of being recorded through an acknowledgement of delivery.

This is one reason a professional registered office service should provide a genuine mail-receiving function rather than merely allowing a company to display an address. Before choosing a provider, ask how official Companies House correspondence is received, recorded and passed to the company.

Can Companies House Reject a Virtual Office Address?

A virtual office is not automatically unacceptable. The important question is what the service actually provides. A virtual office arrangement may include:

• A physical UK address
• Mail reception
• Scanning
• Email forwarding
• Mail forwarding
• Registered office services

If the address and service satisfy the appropriate-address requirements, it may be suitable. But a service marketed simply as a “business address” is not automatically a compliant registered office. This is an important distinction for startups.

Before using a virtual office, ask:

• Can the address legally be used as a registered office?
• Does the provider accept official Companies House correspondence?
• Who receives the documents?
• How is delivery recorded?
• How quickly is important mail forwarded?
• What happens if the service expires?
• Does the provider require evidence or authorisation from the company?
• Is the address located in the correct UK jurisdiction?

The cheapest address is not necessarily the safest address.

Does the Registered Office Have to Be Where the Business Operates?

No. A company's registered office can be different from its actual trading location. For example, an ecommerce company could have:

• Its registered office in London
• Its founders working remotely
• Its warehouse in Birmingham
• Its customers throughout the UK and overseas

There is nothing inherently wrong with this structure. The registered office's role is to provide an appropriate official address for the company. The important point is that it must meet the applicable requirements.

Does the Address Have to Be in the UK?

Yes. Companies House states that a registered office must be a physical address in the UK and must be located in the same country within the UK in which the company is registered. For example:

You cannot simply move the registered office from one UK jurisdiction to another. Companies House specifically states that if a company was registered in Scotland, for example, its new registered office must also be in Scotland. This is particularly relevant when international founders select a UK address during incorporation.

What Happens If Companies House Decides Your Address Is Not Appropriate?

This is where the consequences become more significant. If the registrar is satisfied that a company's registered office is not appropriate, Companies House can change the company's registered office to a default address held and maintained at Companies House.

Depending on the circumstances, Companies House may either give the company an opportunity to object or, in certain cases, change the address without first providing a notice period. The company then has to take action.

The 28-day period

If the company's registered office has been changed to the Companies House default address and no successful appeal has been made, the company generally has 28 days to deliver notice of an appropriate new registered office address. Evidence showing ownership or permission to use the new property may also be required. This is a deadline directors should take seriously.

What If You Ignore the Problem?

Ignoring the issue can ultimately put the company's existence at risk. If a company fails to provide an appropriate registered office within the required period, Companies House may begin steps to strike the company off the register. The process can include publication of a notice in the relevant Gazette.

If the company does not resolve the issue or successfully object, Companies House can ultimately strike it off and the company will be dissolved. There can also be legal consequences for failing to comply with the requirement to maintain an appropriate registered office without reasonable excuse. The legislation provides that an offence may be committed by both the company and an officer in default. So while an address problem may begin as an administrative issue, it should not be treated casually.

Can You Appeal a Companies House Decision?

Yes. If Companies House changes a company's registered office to the default address, the company can appeal the registrar's decision to the court. Companies House guidance states that an appeal must generally be made within 28 days of the company being given notice of the decision.

However, appealing is not necessarily the most practical solution in every case. If the address genuinely does not meet the requirements, securing a compliant replacement address may be more straightforward than disputing the registrar's decision. If you believe Companies House has made an error for example, you have strong evidence that the address is legitimate and properly used professional legal advice may be appropriate.

What Evidence May Help Prove an Address Is Appropriate?

If Companies House questions an address, evidence can matter. Depending on the circumstances, useful evidence may include:

• A lease or property ownership document
• A written agreement giving the company permission to use the address
• A registered office service agreement
• Evidence that official correspondence is received there
• Mail-handling records
• Utility documentation identifying the property and relevant party
• Evidence showing how correspondence is forwarded to company officers

Companies House guidance specifically gives examples of evidence of proprietary rights or permission to use a property, including leasehold/freehold documentation, written agreements and certain utility bills. The precise evidence required can depend on why Companies House is questioning the address.

What Should You Do If Your Registered Office Is Rejected?

If you receive a notice or discover that Companies House is not satisfied with your registered office, act promptly.

Step 1: Understand why the address has been challenged

Do not immediately assume the problem is simply the postcode. Find out whether the issue concerns:

• The physical nature of the address
• Mail delivery
• Permission to use the property
• The jurisdiction
• The address being a PO Box
• Failure to acknowledge delivery
• Evidence supporting the address
• Another Companies House compliance concern

Step 2: Gather supporting evidence

If the address is legitimate, collect evidence showing your right to use it and how company correspondence is handled.

Step 3: Consider replacing the address

If the existing arrangement genuinely does not meet the requirements, changing to an appropriate address may be the fastest solution.

Step 4: File the change correctly

For ordinary registered office changes, Companies House provides an online service. The company must notify Companies House within 14 days of the change taking place, and the change does not officially take effect until it has been registered. However, if your company has already been moved to the Companies House default address, the process is different and a paper form may be required.

Step 5: Check for missed correspondence

Do not focus exclusively on the address. Check your company's Companies House record, filing history and any notices that may have been issued while the address was unavailable.

What About Non-UK Residents?

This issue deserves particular attention from overseas founders. A person living outside the UK can own and operate a UK company, but the company's registered office still needs to meet UK requirements. An overseas founder therefore should not simply choose any UK address found online. The address should have a genuine arrangement for receiving company correspondence. This is one reason professional registered office services can be useful for international businesses.

For example, IncorpUK is a UK company formation and management platform designed around the needs of global founders. Its services include registered office support and scanning/emailing of official company mail, which can help international owners manage correspondence remotely.

The wider lesson is more important than the provider itself: If you live abroad, your registered office should be part of a reliable communication system—not just an address used during incorporation.

How to Choose a Registered Office That Is Unlikely to Be Rejected

Use this checklist before submitting your company formation or changing your address.

✓ Physical UK address

The address should be a physical location in the correct UK jurisdiction.

✓ Not a PO Box

Do not use a Royal Mail PO Box or similar service as your registered office.

✓ Permission to use the address

If it belongs to another person or organisation, make sure you have permission.

✓ Official mail is accepted

Someone should be responsible for receiving company correspondence.

✓ Delivery can be acknowledged

There needs to be a workable mechanism for recording delivery.

✓ Mail is actively monitored

Receiving the letter is not enough if nobody ever looks at it.

✓ The arrangement will remain active

Think beyond incorporation day. Your company must maintain an appropriate address throughout its existence.

✓ Your company can actually be reached there

This is the most important test.

Ask:

If Companies House sent a critical letter to this address tomorrow, would someone responsible for my company receive it and know what to do?

If the answer is yes, you have the right mindset.

Frequently Asked Questions

Can Companies House reject my registered office address during incorporation?

Yes. Companies House requires the registered office to be a physical UK address in the correct UK jurisdiction and an appropriate address. If the address does not meet these requirements, the application may not proceed as expected.

Can Companies House reject an address after my company has already been registered?

Yes. Companies must maintain an appropriate registered office at all times. If the registrar becomes satisfied that the address is not appropriate, it can take action to change the company's registered office to a default Companies House address.

Can I use my home address as a registered office?

Yes, provided it meets the relevant requirements. However, the registered office is publicly available on the Companies House register, so using your home address has privacy implications.

Can I use a virtual office?

Potentially. A virtual office can be suitable if it provides an appropriate physical address and genuine arrangements for receiving company correspondence. The term “virtual office” alone does not determine whether the address is compliant.

Why can't I use a PO Box?

Companies House specifically states that a Royal Mail PO Box cannot be used as a registered office, including similar services offered by other companies. The registered office must be a physical UK address that meets the appropriate-address requirements.

What happens if Companies House moves my company to a default address?

You generally have 28 days to provide an appropriate replacement registered office if you do not appeal the decision. If you fail to do so, Companies House may begin the process of striking the company off the register.

Can I appeal if Companies House rejects my registered office?

Yes. Where the registrar changes the registered office to a default address, the company can appeal to the court. Companies House guidance states that the appeal generally needs to be made within 28 days of notice of the decision.

Does Companies House check every registered office address manually?

Not necessarily. Companies House has powers to investigate addresses and take action where it is satisfied that an address is not appropriate. The important point for directors is that the responsibility to maintain an appropriate registered office remains with the company.

Does changing my registered office immediately update the Companies House record?

No. Companies House states that a registered office change does not officially take effect until the filing has been registered.

Conclusion: Choose an Address That Works, Not Just One That Exists

So, can Companies House reject your registered office address? Yes, but the bigger issue is not whether Companies House likes the appearance of an address. The real question is whether the address satisfies the legal definition of an appropriate address. A compliant registered office should be:

• A physical UK address
• In the correct UK jurisdiction
• Not a PO Box
• Properly authorised for the company to use
• Capable of receiving official correspondence
• Monitored by someone acting for the company
• Capable of providing an acknowledgement of delivery

For most founders, getting this right is straightforward. The risk comes when an address is selected purely because it is cheap, convenient or looks professional online, without checking whether it actually provides a reliable route for official correspondence.

For international founders, the principle is particularly important. You may run your entire business from outside the UK, but your UK company still needs to be reachable. Your registered office is not just a line on the Companies House register. It is an official communication point for your company. Choose one that genuinely works and keep it working for as long as your company exists.