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NRTAUK — UK Business Certification & Compliance

Independent UK Business Certification — The NAS Scheme

NRTAUK operates the NAS (NRTAUK Accreditation Scheme) — independent, evidence-based UK business compliance certification for contractors, tradespeople, and SMEs. Aligned with ISO/IEC 17021 and working towards full UKAS accreditation.

Unlike box-ticking schemes, NAS certification is based on real evidence — documents, policies, workforce records, and insurance — assessed by a qualified, independent assessor. No self-declaration. No shortcuts.

Apply for NAS Certification →

NAS Certification Tiers

NAS Basic — £749/year

Entry-level UK business compliance certification. Core contractor evidence-based assessment across 7 compliance areas including Health & Safety, Insurance, Training, and EDI Policy.

Apply for Basic

NAS Silver — £950/year

Enhanced UK business compliance certification. Includes all Basic requirements plus governance, environmental policy, and supply chain management evidence-based assessment.

Apply for Silver

NAS Gold — £1,150/year

Procurement-ready UK business compliance certification. Full assessment across 22 legal & regulatory areas plus 10 procurement modules. Includes Building Safety Act compliance for higher-risk buildings.

Apply for Gold

Who Is NAS Certification For?

NAS certification is designed for UK contractors, subcontractors, tradespeople, and SMEs who want to demonstrate compliance, win more contracts, and get onto approved supplier lists.

It is recognised by housing associations, main contractors, local councils, NHS trusts, MOD suppliers, and procurement teams across the UK.

How NAS Certification Works

Submit your online application at nrta.uk
Upload your compliance evidence to the secure NRTAUK portal
An independent assessor reviews your evidence against the NAS standard
Receive a decision — approval, corrections required, or referral to the decision maker
Certificate issued and your business is listed on the public accredited register

Full guide to how NAS certification works →