A UK limited company must have a registered office address where statutory mail (Companies House, HMRC, courts) is delivered. The address becomes public on Companies House. You can use your home, your accountant or solicitor, or a paid registered office service. The right choice depends on whether you want privacy, professionalism, or simplicity.

Most UK founders default to using their home address at incorporation. Many regret it within 12 months when the address starts attracting unwanted attention.

What a registered office is for

The registered office is a statutory address required by the Companies Act 2006. It serves three functions:

• Companies House mail (penalty notices, struck-off warnings, identity verification reminders) goes here.
• HMRC statutory mail (tax investigations, formal notices) goes here.
• Court documents (claims against the company, insolvency notices) can be served here.

The address appears on Companies House public records, on company stationery, invoices, and emails. It shows up in Google searches for your company name.

It must be in the same UK constituent country as the company is registered (England and Wales, Scotland, or Northern Ireland) and must be a real physical address. PO Boxes alone are not accepted, though some PO Box services that provide a real underlying street address work.

Using your home address

The cheapest option. Free. Mail arrives where you already are.

The problems show up later:

• Your home address is public for anyone who searches your company name on Companies House.
• The address attracts cold marketing post and aggressive sales calls.
• If your company is ever served court papers, the document arrives at your home.
• If your company faces public criticism (negative reviews, online disputes, unhappy customers), your home is one click away.
• Some lenders and insurers see "home address as registered office" as a small risk flag, particularly for higher-risk businesses.

For a side-business or a clearly small home-based operation, your home is fine. For anything that might grow, attract media attention, or run any risk of dispute, the home address becomes a liability sooner than expected.

Using your accountant or solicitor

Many UK accountants offer registered office services as part of their package. Often included at no extra cost.

What you get:

• Professional address that signals legitimacy.
• Statutory mail forwarded to you (or actioned by the accountant if it's something they handle).
• Privacy from public Companies House records.

Limitations:

• If you change accountants, you must change the registered office promptly. Failing to do so leaves you mail-blind.
• Some accountants charge per item for forwarded mail.
• Not all accountants offer this; ask.

This is the right answer for most UK SMEs that have an accountant.

Paid registered office services

Independent companies (Hoxton Mix, Made Simple, ICUK, Companies Made Simple, and many more) offer registered office addresses as a standalone product.

Cost: £40-£150 per year typically.

What you get:

• A London (or other prestige) address.
• Mail handling: scan and email, or forward weekly.
• Privacy from your home.

When this is useful:

• You don't have an accountant or your accountant doesn't offer the service.
• You want a London address for credibility even though you're elsewhere in the UK.
• You're an overseas founder using a UK service company.
• You want a flexible setup that doesn't tie you to your current accountant.

What to check before buying:

• Is the address legitimate? Some cheap services use the same physical building for thousands of companies, which lenders and banks treat as a red flag.
• What does mail forwarding actually cost? Some advertise £40/year then charge £2 per item.
• Are they responsive? Statutory mail that goes unactioned costs you penalties.

SAIL addresses

Most UK companies can also nominate a Single Alternative Inspection Location (SAIL), where some company records are kept and inspected. Different from registered office.

For most SMEs, the registered office and SAIL are the same address. A SAIL is mostly useful for companies with complex record-keeping or where the registered office is a service provider but the actual records are elsewhere.

Changing the registered office

Filed online via form AD01 to Companies House. Takes effect within 24 hours of acceptance. No fee.

You should also:

• Update HMRC of the address change (most reliable via HMRC online account).
• Update banks, suppliers, customers.
• Update marketing materials, website footer, email signatures, invoices.

The 2024 Companies House changes

The Economic Crime and Corporate Transparency Act 2023 changed registered office rules from 4 March 2024:

• Companies House can reject an address as registered office if:
  • Mail sent there has been returned.
  • The address is residential when the company has stated it's commercial.
  • The address holder has not given permission.
• Companies House can change the registered office to a default address (often back to Companies House's own address) for non-compliant companies, which then triggers strike-off proceedings.
• The address must be "appropriate" - somewhere mail will actually reach the company.

In practice this targeted dormant companies registered at empty addresses or addresses without the holder's permission. Compliant SMEs are not affected.

Bottom line

Use your home only if the business is genuinely small and unlikely to attract attention. Otherwise use your accountant's address (cheapest, easiest, integrates with your other admin) or a paid service if you don't have an accountant or want flexibility.