🛡️ For MOD, DIO & Defence Estate Managers

Require NAS-Certified Contractors
On Your Defence Estate Projects.

Ministry of Defence estate managers, DIO, and defence procurement teams operate within one of the most stringent compliance frameworks in the public sector. Contractors on defence sites must be held to a higher standard. NAS provides independently assessed, publicly verifiable contractor compliance — covering Bribery Act, Modern Slavery, Procurement Act 2023 selection evidence, and more.

Free
Register Verification
22
Laws Covered at Gold
ISO 17021
Aligned Assessment
100%
Independent Review

Why Require NAS From Your Defence Contractors?

Defence procurement carries obligations that go beyond standard commercial supply chain management. The Bribery Act, Freedom of Information Act and the Procurement Act 2023 — which since February 2025 also covers defence and security contracts — all impose specific duties on MOD and DIO as contracting authorities. Contractor compliance must be independently verified, not assumed.

The Risk Without It

Bribery Act 2010 Section 7 creates liability for the contracting authority if a contractor commits bribery and adequate due diligence procedures cannot be evidenced
Modern Slavery Act obligations require active supply chain transparency — self-declaration by contractors is not sufficient for MOD procurement frameworks
Freedom of Information Act obligations extend to contractors handling information on behalf of the MOD as a public authority
The Procurement Act 2023 replaced the Defence and Security Public Contracts Regulations 2011: defence buyers must now check suppliers against exclusion grounds, including national security grounds and the central debarment list
An uncertified contractor incident on a defence estate creates operational, legal, and reputational consequences that are difficult to contain

Why Requiring NAS Protects You

NAS Gold contractors have had their anti-bribery policy, modern slavery and misconduct disclosures, financial standing and tax status reviewed by an assessor
Instantly verify any defence contractor on the free NAS public register — no login, no cost
Data protection, cyber security and records management assessed at NAS Gold — relevant to contractors handling information under public authority contracts
Annual renewal keeps contractor credentials current — essential for active MOD approved supplier lists
Gives your DIO and defence procurement team audit-ready, documented evidence of contractor supply chain due diligence
Supports MOD's Defence Procurement Policy and DEFCON compliance obligations

How NAS Works For You

Independent, evidence-based contractor certification you can rely on.

Instant Register Search

Verify any defence contractor free on the NAS public register — by name or certificate number, no login needed.

Bribery Act Due Diligence

NAS Gold reviews your anti-bribery policy — evidence of the adequate procedures that are a defence under section 7 of the Bribery Act.

Modern Slavery Covered

Bronze checks a modern slavery statement where turnover is £36m or more, and Gold reviews your modern slavery risk policy and supply chain labour standards.

Procurement Act Evidence at Gold

NAS Gold reviews the disclosures behind the Procurement Act 2023 exclusion grounds — convictions, insolvency, tax and misconduct — plus financial standing.

Always Current Status

Annual renewal keeps the register current. Expired or suspended contractor certifications are immediately flagged.

DIO Supply Chain Governance

NAS provides your DIO and estate management teams with consistent, independently assessed contractor compliance evidence across all projects.

Verify a Contractor Right Now

Search the NAS public register to instantly confirm any contractor's current certification status and tier — free, no login required.

Frequently Asked Questions

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Start requiring NAS certification from your contractors — independent, evidence-based, and publicly verifiable.

Related Pages

Procurement GuideHow Certification WorksAccredited RegisterGovernance & ImpartialityAll Sectors & Trades