Insights · Certifications & compliance

What is JOSCAR and why does it matter for defence suppliers?

Last reviewed: 9 July 2026

The short answer

JOSCAR (the Joint Supply Chain Accreditation Register) is the shared supplier pre-qualification register for the UK aerospace, defence and security industries, operated by Hellios. A registered supplier has passed standardised checks on compliance, quality and finances. Milltech is JOSCAR registered.

If you are qualifying suppliers for an aerospace or defence programme, JOSCAR is one of the first things you will check. Here is what it is, why buyers rely on it, and how to confirm a supplier holds it.

What is JOSCAR?

JOSCAR — the Joint Supply Chain Accreditation Register — is a single, shared pre-qualification register for the UK aerospace, defence, security and space industries. It is operated by Hellios on behalf of a community of buyers, so a supplier is assessed once against a common standard rather than repeatedly for each customer.

Registration covers a supplier's quality management, regulatory compliance, financial health, and business policies — the due-diligence a defence buyer needs before placing work.

Why does JOSCAR matter for defence suppliers?

Because the primes use it as a gate. Major aerospace and defence buyers pre-qualify their supply chains through JOSCAR, so registration carries real weight:

  • It signals you have already passed the standardised checks those buyers require.
  • It shortens onboarding, because the due-diligence is done and shared.
  • It is often a prerequisite for being considered for defence work at all.

For a subcontractor, it removes a barrier that stops many shops from getting onto the approved-vendor list.

How does a supplier become JOSCAR registered?

A supplier submits a standardised questionnaire and supporting evidence through Hellios — covering certifications, quality processes, financial information and policies — which is then verified. Registration is kept current through periodic re-validation, so the register reflects a supplier's live status rather than a one-off snapshot.

Is Milltech JOSCAR registered?

Yes. Milltech is JOSCAR registered, and pairs it with an ISO 9001:2015 quality management system approved by LRQA and Cyber Essentials Plus certification — the accreditation stack aerospace and defence buyers look for when adding a machining subcontractor to their supply chain.

FAQ

Frequently asked questions

What does JOSCAR stand for?

JOSCAR stands for the Joint Supply Chain Accreditation Register. It is a single, shared pre-qualification system used by buyers across the UK aerospace, defence, security and space sectors, operated by Hellios.

Why does JOSCAR matter for defence suppliers?

Major aerospace and defence primes use JOSCAR to pre-qualify their supply chains. Being JOSCAR registered means a supplier has already passed the standardised checks those buyers require, which shortens onboarding and is often a prerequisite for being considered at all.

How does a supplier become JOSCAR registered?

A supplier completes a standardised questionnaire and submits evidence covering quality management, compliance, financial stability, policies and certifications through Hellios. The submission is verified, and registration is maintained through periodic re-validation.

Is JOSCAR the same as AS9100?

No. AS9100 is the aerospace quality-management standard for how a supplier controls manufacturing quality. JOSCAR is a supply-chain pre-qualification register covering broader business, compliance and financial checks. Aerospace and defence buyers often look for both.

Is Milltech JOSCAR registered?

Yes. Milltech is JOSCAR registered, alongside its ISO 9001:2015 quality management system (approved by LRQA) and Cyber Essentials Plus certification.

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