Product quality is of paramount importance to us. It is a commitment and responsibility that we share with our supplier partners and our customers, which is why we operate to the highest quality control procedures and processes. Operating in the Aerospace, Power and Defence sectors requires us to have significant approvals and accreditations.

A full list of our certifications is available below.

Quality & Regulatory Approvals

We are regularly audited and reviewed to improve our Quality & Regulatory Approvals in AS9100, ISO 14001, & ISO 18001. This ensures the safety of our employees, exceeding our customers’ quality expectations, promoting measures to reduce wastage and non-conformance, and fulfiling our responsibility in preventing environmental damage.

  • AS9100, EN9100:2018 Quality Management System
  • ISO 14001 Environmental Management
  • ISO 18001 Health & Safety


Sigma is Nadcap accredited – a global standards-setting programme for the Aerospace, Defence and relating industries. Nadcap ensure that international, unbiased, independent manufacturing processes and products assessments and certification services are provided for the sole purpose of reducing total cost, adding value and facilitating relationships with suppliers.

  • Nadcap Welding & Brazing
  • Nadcap Non Destructive Testing
  • Nadcap Chemical Processing
  • Nadcap Heat Treatment

Industry Accreditations 

Using JOSCAR (the Joint Supply Chain Accreditation Register) aids us in streamlining our assurance processes and determining if a supplier is compliant. It is a collaborative tool used by the Aerospace, Defence and Security industry to act as a single repository for pre-qualification and compliance information.

  • JOSCAR (Joint Supply Chain Accreditation Register)