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United Kingdom · Certification

AS9100 certification in the United Kingdom

Achieve AS9100 certification in the UK with Sterling: 8,100+ client engagements in 60+ countries, 20+ years.

  • Accredited certification
  • London office team
  • Effivity software included
  • Academy training included

Clients include

  • Allianz
  • Emirates Flight Catering
  • Etihad Rail
  • Haier
  • Whirlpool
  • Emerson
In short

AS9100 certification in the UK at a glance

In the UK, AS9100 is asked for by buyers and schemes rather than required by law. The drivers below show where the pressure comes from.

Aerospace, automotive and electronics sit among the advanced manufacturing strengths of the Solent, according to the Government's profile of Solent Freeport, while Plymouth and South Devon Freeport targets defence, marine and advanced engineering. For machine shops and component makers in these clusters, AS9100 is the quality management standard aerospace primes expect, adding configuration management, product safety, first article inspection and counterfeit-part prevention to the ISO 9001 base. Certificates issued under the International Aerospace Quality Group's rules are recorded in OASIS, the database primes use when qualifying suppliers. AS9100 certification is granted by a certification body operating under IAQG rules with the relevant accreditation, typically UKAS in the UK; Sterling prepares the organisation and does not issue certificates. Delivery comes from the London office, on-site at UK manufacturing sites, with Effivity and Sterling Academy included. The local route and the questions UK aerospace suppliers ask most follow below.

The need

Who needs AS9100 in the UK, and what happens without it

In the UK the question rarely comes from a law. It comes from the buyer, the regulator or the partner that wants proof before it signs. These are the organisations that get asked.

  • Aerospace component manufacturers in the Solent regionSolent Freeport lists aerospace among the region's advanced manufacturing; primes select suppliers through OASIS listings.
  • Defence and marine engineering suppliers around PlymouthPlymouth and South Devon Freeport targets defence and advanced engineering.
  • Precision engineering firms moving from ISO 9001 into aerospace supplyAS9100 builds on ISO 9001 with aerospace requirements.

Not sure which of these applies to you?Answer a short set of questions and your readiness report arrives by e-mail.

Take the AS9100 readiness check
Requirements

AS9100 requirements in the UK

Strip away the vocabulary and AS9100 asks a supplier to prove six things about delivering aerospace products safely and on time.

Product safety is managedRisks to product safety are identified and controlled throughout the product's life, from design to delivery.
Configuration is under controlThe approved configuration of each product is identified, changes are controlled and records match what was delivered.
Counterfeit parts are kept outPurchasing, inspection and supplier controls stop counterfeit or suspect parts from entering the product.
Operational risks are managedRisks to delivery and product conformity are assessed and controlled during planning and production.
Production is proven before it runsProduction process verification, such as first article inspection, confirms that processes can make conforming product.
Delivery and conformity are measuredOn-time delivery and product conformity are measured, and human factors are considered when nonconformities are investigated.

In the UK these six sit alongside the local laws and regulations listed under drivers below; one system can evidence both. The detail is on the global hub: AS9100 explained →

    How Sterling gets a UK company certified

    How to get AS9100 certified in the UK

    One team from the London office carries the work from scoping to certificate. England, Scotland, Wales and Northern Ireland, on-site from London; remote delivery for distributed teams.

    1. Discovery call and scopeEntities, locations, regulators and target date, agreed before any proposal.
    2. Gap assessment against AS9100 and the UK requirements that apply to youControls you already run for your regulators and customers are reused, not rebuilt.
    3. Your system built with your team in EffivityRisks, controls, evidence, incidents and reviews in one live system the auditor can see.
    4. Internal audit, management review and corrective actionsYour internal auditors trained by Sterling; the evidence proven before the certification body arrives.
    5. Certification body stage 1 and stage 2, then surveillanceAn accredited body audits and decides. Sterling supports the audits and the three-year cycle.
    Included in every engagement
    • End to end, from one team
    • Effivity ISO & GRC software
    • Preferential Sterling Academy access, with complimentary awareness training for your people
    • Internal auditor training for your audit team, as applicable to your standard
    • Vulnerability assessment on ISMS engagements

    The Sterling Promise: 100% on-time completion, 100% success, 8,100+ client engagements.Sterling does not certify. Certification decisions stay with independent bodies.

      Time

      How long does AS9100 certification take in the UK?

      There is no standard duration: it depends on your scope and on how much of the system already runs. In the UK these are the factors that set the timeline.

      • Number of sites and special processes in scope
      • Configuration management, first article inspection and counterfeit-part controls in place
      • Customer-specific requirements from primes
      • Internal audit and management review before stage 2

      Sterling agrees a dated plan with you on the discovery call, once the scope is known.

      Cost

      How much does AS9100 certification cost in the UK?

      The cost has two parts: the consulting work to build and prove the system, and the certification body’s audit fees, which are quoted separately. In the UK these factors move both.

      • Sites, headcount and product complexity
      • Special processes and outsourced operations
      • Certification body audit fees, quoted separately from consulting
      • Transition from an existing ISO 9001 system

      Sterling gives one customised, all-inclusive proposal after the discovery call, never before the scope is agreed.

        Choosing a partner

        AS9100 consultants and certification bodies in the UK

        Two different organisations are involved. A consultant helps you build the system and prove it works; an accredited certification body then audits or assesses it and decides. Keeping the two separate is what makes the result credible to buyers and regulators.

        • Check that the body’s accreditation or approval covers AS9100 and your sector, and that its certificates can be verified online.
        • Ask the consultant how the local requirements in the UK are mapped into the same system, so nothing runs twice.
        • Ask for client references in your sector; Sterling’s client letters are available on request.
        • Agree who owns the evidence and the tool after the engagement; with Sterling the system stays yours, in Effivity.

          Laws and regulations that drive AS9100 in the UK (2)

          InstrumentHow it treats the standard
          UK Freeports sector profilesMarket driver
          Solent Freeport lists aerospace within advanced manufacturing; Plymouth and South Devon Freeport targets defence and advanced engineering; no mandate.
          UKAS accreditation of certification bodies (Accreditation Regulations 2009)Market driver
          Accredited certification is available through the UK's sole national accreditation body; no mandate.

          Accreditation, audit language and remote audits in the UK

          AS9100 certificates are issued by certification bodies operating under IAQG rules with the relevant accreditation (in the UK, typically UKAS); results appear in OASIS. No body is named here unless verified. Edition and transition details: AS9100 hub →

          Audit language

          English. Agree the audit language with the certification body at application; Welsh public body clients may set Welsh-language requirements.

          Remote and on-site

          Stage 1 is often remote; stage 2 normally includes on-site audit of the sites in scope, subject to the certification body's rules.

          AS9100 in the UK: questions clients ask

          Do we need ISO 9001 before AS9100?

          No. AS9100 contains the ISO 9001 requirements, so a separate ISO 9001 certificate is not a prerequisite. Precision engineering firms moving into aerospace supply often start from an ISO 9001 system because the aerospace standard builds on it, but the certificate itself is not demanded first. What you need is a quality system that meets the added aerospace requirements.

          Does AS9100 cover defence work?

          AS9100 can sit under defence supply, but it does not settle it. Defence primes set their own requirements, and some work points towards AQAP 2110, which has its own hub. Locally, the Plymouth and South Devon Freeport lists defence and advanced engineering among its sectors, so suppliers there should ask each prime what it expects before scoping.

          Read more

          More on AS9100 for UK organisations

          Explore

          Other standards UK businesses ask Sterling for

          Organisations in the UK often combine AS9100 with one of these, under one management system where the scopes allow.

          All 23 standards Sterling delivers in the United Kingdom →

          Next step

          Start with a free discovery call from the London office

          A Sterling consultant goes through your entities, your regulators and your target date with you. No proposal until the scope is agreed.

          Sources

          1. UK Freeports sector profiles — ukfreeports.campaign.gov.uk (accessed 5 Oct 2026)
          2. UKAS accreditation of certification bodies (Accreditation Regulations 2009) — ukas.com (accessed 5 Oct 2026)
          3. United Kingdom Accreditation Service (UKAS) — ukas.com (accessed 5 Oct 2026)

          Talk to a consultant

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