Step by Step
The NAS Assessment Process.
Organisations submit evidence of compliance. Independent assessors evaluate it. Successful organisations are certified and listed.
Submit Application
Complete the NAS application form with your organisation's details. Select your desired tier (Basic, Bronze, Silver, or Gold) based on your maturity and compliance requirements.
Application Review
Our team reviews your application for completeness and eligibility. We verify the information meets basic requirements before proceeding.
Payment & Account Setup
Receive payment details and access to your secure portal. This is where you'll submit evidence and track your assessment progress.
Evidence Submission
Upload documents demonstrating compliance with NAS criteria — policies, procedures, records, and certifications relevant to your chosen tier.
Evidence Review
Initial review of submitted evidence to ensure all required documentation has been provided and is accessible for assessment.
Assessor Evaluation
An independent assessor evaluates your evidence against NAS criteria. Any non-conformities are documented with clear guidance.
Decision Manager Overview
A decision manager independently reviews the assessment for impartiality and completeness, then makes the final certification decision.
Certification Issued
Your NAS certificate is issued. Your business is listed on the public NAS Certified Business Register, verifiable by buyers and procurement teams.
Listed on NAS Certified Business Register
Your organisation is publicly listed on the NAS Certified Business Register at nas-certification.co.uk — freely searchable by buyers, procurement teams and principal contractors.
What to Expect
What to Expect.
