What is Achilles UVDB Qualification?

Achilles UVDB qualification is the supplier qualification scheme used across the UK utilities sector, now formally known as UVDB Powered by Achilles. Almost 70 major utility buyers, including National Grid, Thames Water and SSE, use it to pre-qualify suppliers. Suppliers register with Achilles, complete an online questionnaire and, for higher-risk work, undergo a UVDB Verify audit to demonstrate appropriate standards in safety, quality, environmental management and competence.

In simple terms, Achilles UVDB is a supplier qualification scheme used by major utility organisations to assess suppliers before they are invited to tender for work. It provides a consistent way for buyers to review potential suppliers and helps reduce risk throughout the supply chain.

What is Achilles UVDB?

UVDB stands for Utilities Vendor Database. Now formally known as UVDB Powered by Achilles, it is operated by Achilles and used by almost 70 of the UK’s major utility companies and infrastructure organisations, including National Grid, Thames Water, SSE, Cadent Gas, UK Power Networks, Scottish Water and United Utilities.

The scheme allows buyers to assess suppliers against a common set of requirements rather than requiring every supplier to complete separate pre-qualification processes for each organisation. Suppliers register with Achilles, complete an online questionnaire and, where required, undergo an audit process. Once qualified, they become visible to buyers using the scheme.

The objective is to help buyers identify suppliers that can demonstrate appropriate standards in areas such as safety, quality, environmental management and competence.

Who uses UVDB?

• The scheme is used across the utilities sector by organisations involved in areas such as:
• Electricity generation, transmission and distribution
• Water and wastewater
• Gas distribution and transmission
• Renewable energy
• Utilities infrastructure

Buyers use UVDB as part of their supplier selection and risk management processes. For suppliers, qualification provides a single recognised route into the sector, replacing the need to complete separate pre-qualification exercises for each individual buyer.

How does UVDB qualification work?

The process begins with registration through Achilles. Organisations provide information about their business and select codes that describe the services they provide. These codes are important because they help determine both how the organisation is categorised within the scheme and the level of assessment required.

The qualification process generally follows four stages:

1. Registration

The organisation registers with Achilles and selects the relevant service codes.

2. Questionnaire

An online questionnaire is completed covering a range of business, operational and compliance topics, including health and safety arrangements, environmental management, quality management, competence and training, and insurance and financial information.

3. Audit (where required)

Higher-risk activities trigger a UVDB Verify audit. The structure and scope of that audit depends on which category applies to the organisation.

4. Qualification

Once the process has been successfully completed, the organisation becomes qualified within the scheme and visible to buyers.

Why do service codes matter?

One of the most important parts of the process is selecting the correct service codes.

These codes define the activities your organisation undertakes and determine how buyers identify suppliers within the database. They also influence the level of assessment required. Lower-risk activities generally require completion of the questionnaire only. Higher-risk activities often require a more detailed audit process.

Selecting codes that do not accurately reflect your activities can create complications during qualification and may affect how your organisation appears to potential buyers.

What is UVDB Verify?

UVDB Verify is the audit element of the scheme. Not every supplier will require an audit — whether one is needed depends largely on the nature and risk profile of the work being undertaken.

Although many people assume UVDB is primarily a health and safety assessment, the audit covers a broader range of areas, including:

• Health and safety
• Quality management
• Environmental management
• Competence and training
• Business management arrangements

The overall aim is to assess whether an organisation has suitable systems and controls in place for the work it performs.

What does the audit involve?

There are five UVDB Verify audit categories. Which one applies to your organisation depends on the nature and risk profile of your activities.

Category A
A desktop audit for higher-risk smaller suppliers typically working under supervision or on sites that remain under the control of the utility. No site visit is required.

Category B1
A one-day audit for higher-risk medium-sized suppliers providing works or services on operational utility sites. The day is split between a half-day management systems evaluation carried out at your offices and a half-day site-based assessment.

Category B2
A two-day audit for higher-risk larger suppliers providing works or services on operational utility sites. One full day is spent on the management systems evaluation and one full day on the site assessment.

Category C
A one-day management systems audit for suppliers providing consultancy or design services to the utilities sector. No site visit is required unless the work involves physical site-based activities, in which case a Category B audit would apply instead.

Category D
A two-day audit for suppliers whose services include the manufacturing, fabrication, servicing or distribution of products that will be incorporated into utility assets or operational plant.

For categories that include a site visit, the auditor will review equipment, materials and welfare facilities in use, interview operatives and assess how documented arrangements are being applied in practice. The office-based element focuses on management systems, policies, procedures and supporting documentation.

Audit results are published online for authorised buyers to view and include an executive summary, detailed findings and scores across each discipline area.

The Procurement Act 2023

Organisations operating in or entering the utilities sector should be aware that the Procurement Act 2023 has introduced changes to how procurement compliance is demonstrated.

UVDB Powered by Achilles supports compliance with both the existing Qualification System Notice under the Utilities Contracts Regulations 2016 and the newly introduced Qualification Utility Dynamic Market notice introduced under the Procurement Act 2023. This means the scheme provides a single pre-qualification route that satisfies both the existing and new legislative frameworks without requiring suppliers to go through separate processes.

If you are unsure how these changes affect your current qualification status or what steps you need to take, this is worth clarifying before your next renewal.

Does UVDB qualification guarantee work?

No. This is one of the most common misconceptions about the scheme.

UVDB qualification does not guarantee contracts, preferred supplier status or future work. What it does provide is visibility. It allows buyers to identify and assess suppliers through a recognised qualification process and can be an important step towards accessing opportunities within the utilities sector. Whether those opportunities convert into work depends on the organisation’s capability, capacity and commercial proposition.

Is ISO certification enough?

Many organisations assume that existing ISO certifications automatically satisfy UVDB requirements.

While standards such as ISO 9001, ISO 14001 and ISO 45001 often provide a strong foundation, UVDB contains scheme-specific requirements that are not necessarily covered by ISO certification alone. This is one of the most common reasons organisations encounter difficulties during the qualification process, and it is worth reviewing the specific UVDB requirements against your existing systems before submission rather than assuming alignment.

Refresh: what UVDB is for

Achilles UVDB qualification is designed to help utilities buyers assess suppliers consistently and manage risk throughout the supply chain.

For suppliers, it provides a recognised route into the utilities sector and increases visibility to a lot of major buyers through a single qualification process. Understanding how the scheme works, including which audit category is likely to apply, how service codes affect your profile and what the Procurement Act 2023 means for your obligations, makes the process considerably more straightforward and reduces the risk of delays or unexpected requirements further down the line.

Need support with UVDB qualification?

JVR Consultancy helps organisations prepare for Achilles UVDB qualification, complete applications, address gaps in existing systems and prepare for UVDB Verify audits.

Read more about our Achilles UVDB accreditation support services.