What Is a Single Alternative Inspection Location (SAIL) Address & Why Might You Need One?

Starting a new business involves making several important decisions, including choosing the right registered office address. But what if you’d prefer to keep your company records in a different location for privacy, security, or convenience?

This is where a Single Alternative Inspection Location (SAIL) address comes in. A SAIL address allows a company to store its statutory records at a location other than its registered office while still making them available for public inspection.

In this guide, we’ll explain what a SAIL address is, why businesses use one, what records can be kept there, and how to set one up.

What Is a SAIL Address?

A SAIL address (Single Alternative Inspection Location) is an official alternative location where a UK limited company or LLP can keep its statutory records for public inspection. If a company does not register a SAIL address, all statutory records must be held at the registered office address.

Having a SAIL address is completely optional, but once you decide to use one, you must notify Companies House, as this is a legal requirement.

A SAIL address must:

• Be a physical address in the UK

• Be located in the same UK jurisdiction as your registered office (England & Wales, Scotland, or Northern Ireland)

For example, if your registered office is in Manchester, your SAIL address must also be in England or Wales.

What Is the Purpose of a SAIL Address?

Companies often choose a SAIL address when their registered office is not a practical or desirable place to store company records. Some of the main benefits include:

Privacy

Directors who use their home address as a registered office may prefer a SAIL address to avoid members of the public visiting their residence.

Security

Statutory documents are sensitive and important. A SAIL address can offer a safer, more secure environment for storing these records.

Flexibility

A SAIL address gives business owners greater control over where records are stored and how inspections are managed.

Cost-Effective

Using a SAIL address can be more affordable than leasing commercial premises solely to store company records.

What Records Can Be Kept at a SAIL Address?

The statutory registers and documents that may be held at a SAIL address include:

• Register of members (shareholders or guarantors)

• Register of directors

• Register of company secretaries

• Register of people with significant control (PSCs)

• Register of charges and related instruments

• Directors’ service contracts

• Directors’ indemnities

• Copies of company resolutions

• Minutes of general meetings

• Contracts relating to the purchase or redemption of own shares

• Register of debenture holders

These records must be made available for inspection by the public following a valid written request.

Legal Requirements for a SAIL Address

Although a SAIL address is optional, strict rules apply once you choose to use one:

• Physical address only – P.O. Boxes are not permitted

• Same jurisdiction as the registered office

• Companies House must be notified

• Public access required – Records must be available Monday to Friday, 9am–5pm

Failure to meet these requirements can result in penalties.

Do Company Records Have to Be Available for Inspection?

Yes. All UK private limited companies are legally required to make their statutory records available for inspection during normal business hours (9am–5pm, Monday to Friday).

• Company members can inspect records free of charge

• Members of the public may be charged a statutory fee

This requirement exists to promote transparency and accountability.

Anyone requesting access must submit a formal request that includes:

• Their name and address

• Organisation details (if applicable)

• Purpose of the request

• Whether the information will be shared

• Preferred date and time of inspection

A SAIL address provides a dedicated location to manage these inspections.

Must a SAIL Address Be in the UK?

Yes. A SAIL address must:

• Be located within the UK

• Be in the same country of incorporation as the registered office

SAIL Address vs Registered Office Address

A company may use the same address for both, but this is not mandatory.

How to Set Up a SAIL Address

Setting up a SAIL address is straightforward:

1. Choose a suitable UK location that meets all legal requirements

2. Notify Companies House by filing Form AD02 (online or by post)

3. Ensure records are accessible during working hours

Changing or Closing a SAIL Address

• To change your SAIL address, file Form AD03

• To close your SAIL address and return records to the registered office, file Form AD04

Handling Statutory Mail

Even if you use a SAIL address, all official mail continues to go to your registered office. This is why it’s essential to keep your Companies House details up to date.

Many companies use a mail forwarding or registered office service to ensure documents are handled securely and efficiently.

Avoiding Penalties

Failure to maintain accurate company addresses or comply with inspection requirements can result in:

• Financial penalties

• Legal action

• Director disqualification

• Restrictions on forming new companies

Staying compliant protects both the company and its directors.

A SAIL address is an excellent solution for business owners who want to keep their inspection location separate from their registered office—particularly those using a home address.

It offers clear benefits including privacy, flexibility, cost savings, and improved security. However, some registered office address services can provide similar advantages without the need for a separate SAIL address.

Before making a decision, assess your business needs carefully and choose the option that best supports your company’s long-term goals.