Can I Use a PO Box as a Registered Office Address?

No. Since 4 March 2024, a PO Box can no longer be used as a UK company's registered office address. Your registered office now has to be a genuine physical location where post can actually be received and acknowledged.

Key Takeaways

• PO Boxes stopped being valid registered office addresses on 4 March 2024, under the Economic Crime and Corporate Transparency Act 2023.
• Your registered office must be an "appropriate address": a physical location where mail reaches someone acting on the company's behalf, and receipt can be acknowledged.
• Companies still using a PO Box risk having it replaced with a Companies House default address, which publicly signals non-compliance.
• A registered office address service is the most common compliant alternative for keeping a personal address off the public register.
• Continued non-compliance can ultimately lead to the company being struck off.

Why Can't I Use a PO Box as My Registered Office Anymore?

A PO Box is just a numbered locker at a sorting office, not a location where anyone can confirm mail has actually been received. Once the Economic Crime and Corporate Transparency Act 2023 introduced the requirement for an "appropriate address," a PO Box stopped qualifying, since there's no way to verify official mail sent there is being picked up or read by anyone connected to the company.

The rule exists to close a gap that was being used to dodge accountability. A registered office is where Companies House, HMRC, and UK courts send statutory correspondence, and if that mail can sit unacknowledged indefinitely, the whole point of having a registered office breaks down.

What Counts as an "Appropriate Address" Instead?

Your registered office needs to be a real, physical UK address, in the same jurisdiction your company is registered in, where mail addressed to the company would reasonably be expected to reach someone acting on its behalf, with receipt capable of being acknowledged. A home address, a rented office, or a registered office service can all meet this bar. A PO Box, virtual mailbox with no physical premises, or an address with no genuine connection to the company cannot.

What Happens if My Company Still Has a PO Box Listed?

Companies House can replace it with a default address, one of three standard addresses covering England and Wales, Scotland, and Northern Ireland. This is publicly visible and signals to anyone checking the register that the company isn't currently compliant.

You'll then have 28 days to provide a valid address or evidence that your current one is appropriate. Ignoring this can escalate to fines and, in persistent cases, the company being struck off the register entirely. It's worth updating a non-compliant address proactively rather than waiting for Companies House to flag it.

What Can I Use Instead of a PO Box?

Three main options work, each with a different balance of cost, privacy, and practicality.

• Your own physical premises. If you already rent or own a commercial space, it can double as your registered office, provided it meets the appropriate address rule.
• Your home address. Allowed, but it becomes publicly visible on the Companies House register once used this way, and if you rent, your tenancy agreement may restrict using it for business purposes.
• A registered office address service. A compliant business address provided by a formation agent, with your mail forwarded on securely. This is the most common route for people who want to keep a personal address off the public register without renting office space they don't need.

Our registered office address service includes mail handling and can also double as your director's service address, so neither your company nor your personal details need to sit on the public register unnecessarily. Our fuller guide on registered office, service, and residential addresses breaks down how all three compare if you're still working out which address goes where.

FAQs

Can I still use a PO Box as my registered office address?

No. Since 4 March 2024, PO Boxes no longer meet the "appropriate address" requirement for a UK company's registered office.

What happens if my company's registered office is still a PO Box?

Companies House can replace it with a default address, which is publicly visible and signals non-compliance. You then have 28 days to provide a valid address.

Can I use my home address as my registered office instead of a PO Box?

Yes, but it will appear on the public Companies House register, and if you rent your home, you may need your landlord's permission first.

What's the easiest compliant alternative to a PO Box?

A registered office address service. It meets the appropriate address requirement automatically and keeps a personal address off the public register.

Can a virtual office address be used as a registered office?

Only if it's a genuine physical location where post can be received and acknowledged. A virtual mailbox with no real premises behind it won't meet the requirement.

This article is for general information only and does not constitute legal advice. Companies House requirements can change, so it's worth checking current guidance on GOV.UK or Companies House before relying on the details above.