NAS Certification for
Local Authority Contractors
Independent, evidence-based compliance certification for contractors working on council housing, highways, public estates, and local government projects.
Demonstrate compliance to council procurement teams, framework managers, and local authority supply chain leads — with a live certification profile, not a static PDF.
Why It Matters
Local Authority Procurement Demands Verified Compliance
Since 24 February 2025, councils in England, Wales and Northern Ireland tender new contracts under the Procurement Act 2023. Before awarding, they must check whether a supplier — and in some cases its subcontractors — should be excluded. Self-declaration alone gives them little to go on.
NAS certification gives council procurement teams independently assessed, publicly verifiable evidence — covering the Modern Slavery Act, environmental controls and the Procurement Act 2023 exclusion-ground disclosures that local authority work demands.
- Independent, evidence-based NAS certification
- Demonstrates compliance to council procurement teams and framework managers
- Supports PQQ and pre-qualification for local authority frameworks
- Health & safety policy and RAMS independently reviewed
- Procurement Act 2023 selection evidence assessed at Gold
- Modern slavery (statement at Bronze where turnover is £36m+; policy at Gold) and anti-bribery (Gold)
- Live digital profile shared with procurement teams instantly
- Free certificate verification on the NAS public register
Independent evidence council procurement teams can check on a free public register.
What Gets Assessed
NAS assessment reviews evidence across core compliance areas. Here's what local authority contractors typically need to demonstrate.
Health & Safety Policy
A current, signed H&S policy covering site risks and workforce responsibilities — assessed at all tiers.
Procurement Act 2023
Gold reviews the evidence behind the Act's exclusion grounds — convictions, insolvency, tax, misconduct and modern slavery — that councils must now check.
Insurance Evidence
Valid Employer's Liability and Public Liability insurance at appropriate cover levels, verified at assessment.
Modern Slavery Act
Section 54 compliance statement and supporting evidence required at Silver and Gold for council supply chains.
Environmental Compliance
Environmental and waste management evidence for grounds, highways, waste, and demolition contractors (Silver+).
Anti-Bribery Act
Anti-bribery policy, relevant to contractors paid by public bodies (Gold).
Choose the Right NAS Tier
All tiers include H&S assessment. Higher tiers add broader compliance for larger council contracts.
Health and safety policy and arrangements, risk assessments and method statements, COSHH, CDM duties, training, insurance and subcontractor checks — the SSIP core criteria.
- Health & safety policy
- Risk assessments & method statements
- Training & insurance
- Public register listing
Everything in Basic plus legal identity and licences, employers’ liability insurance, data protection, equality, complaints handling, employment terms and right-to-work checks.
- Everything in Basic
- Data protection & equality
- Employers’ liability & employment checks
- Public register listing
Everything in Bronze plus environmental and waste management, quality and corrective action, governance and conflicts of interest, competition law, pensions, working time and subcontractor approval.
- Everything in Bronze
- Environmental & waste management
- Quality & governance
- Public register listing
Everything in Silver plus 13 procurement modules: financial standing, anti-bribery and integrity disclosures, tax status, cyber security, ethical supply chain, sustainability and Building Safety Act readiness.
- Everything in Silver
- 13 procurement modules
- Anti-bribery & financial standing
- Building Safety Act readiness
Frequently Asked Questions