What Is a UK DUNS Number and How to Get One?

What Is a UK DUNS Number?

A DUNS number (Data Universal Numbering System) is a globally unique nine-digit identifier assigned to businesses by Dun & Bradstreet (D&B), the global commercial data and credit-reporting agency. In use since 1963, it lets a company be recognised across the world’s business registry. For UK (United Kingdom) based businesses, a DUNS number is a trust and transparency tool used everywhere from supplier onboarding to credit applications.

In this guide we explain what a UK DUNS number is, what it is used for, how it is assigned automatically in the UK, how to look it up, and its costs — based on current official sources.

How Does a DUNS Number Work?

A DUNS number acts as a permanent identifier for your company’s business credit file maintained by Dun & Bradstreet. This file holds the company’s name, address, contact details, corporate linkage to headquarters and branches, and the scores and ratings that assess its financial health. D&B calls this profile the “Live Business Identity”.

Using the DUNS number, potential partners can request a business credit report about your company; likewise, you can access the same information about firms you are considering working with. The number therefore serves as a key that lets each party verify the other’s stability, creditworthiness and reliability.

Where Is a DUNS Number Used?

For a business operating in the UK, a DUNS number comes into play in several scenarios:

Main Use Cases

• Credit applications: Lenders may use your DUNS number to review your credit history.
• Supplier evaluations: Large companies verify your legitimacy and financial stability before signing a contract.
• Public tenders: Some government bodies request a DUNS number during procurement.
• Grant & funding applications: Certain grant programmes require a DUNS number to apply.
• Business partnerships: Prospective partners and investors may refer to it when assessing you.

According to Dun & Bradstreet’s official statement, although a DUNS number is no longer mandatory for U.S. federal government contracts, it is still widely used by many agencies, governments and companies around the world.

Does My Company Need a DUNS Number?

A DUNS number is not legally required; there is no statutory obligation for businesses to obtain one. However, it offers a strong advantage in the following situations:

• Business activities: If you apply for credit, tenders or grants, the process may require a DUNS number.
• Supplier relationships: If you work with firms that require a DUNS number, you will need one to maintain those relationships.
• Building business credit: Even if you don’t need one now, it helps you build a commercial credit history for future financing.
• Industry standards: In some sectors, having a DUNS number is considered standard practice.

How to Get a DUNS Number in the UK

There is an important convenience for the UK: all registered businesses in the UK and Ireland are automatically issued a DUNS number at no charge. In other words, once you register your company at Companies House, your number is created without needing a separate application.

Steps for Businesses Outside the UK/Ireland

If your company is established outside the UK or Ireland, the online application typically follows these steps:

1. Go to the Dun & Bradstreet website and click “Get a DUNS Number”.
2. Complete the online form with details such as contact information, legal structure and industry classification.
3. Confirm your information and submit the application.
4. D&B reviews your application and may contact you for verification.
5. After approval, a unique nine-digit number is assigned and notified to you by email.

Timeline & Cost Table

The table below summarises the process and costs of obtaining a DUNS number based on official Dun & Bradstreet data:

DUNS Number Lookup (How to Find It)

To find your company’s DUNS number or verify a partner’s, you can use Dun & Bradstreet’s official D-U-N-S Lookup tool:

1. Go to the “Look Up a Number” section on the Dun & Bradstreet website.
2. Enter your business name and location in the search box.
3. Select your company in the results and view the “DUNS Number” field in the profile.

If your business is not in the database, it can take a few weeks for a number to be assigned and added.

Benefits of a DUNS Number

For professional support with UK company formation and all corporate identity processes including the DUNS number, see our UK company formation guide, and for tax identity, read our article on the UK tax number (TIN) system. For any questions, get in touch with us.

References

1. Dun & Bradstreet UK – Request a D-U-N-S Number: dnb.co.uk
2. Dun & Bradstreet – About the D-U-N-S Number: dnb.com/duns.html