STI logo
  • Company
    Company
    • About STI
    • Our Team
    • Quality Assurance
    • Corporate Responsibility
    • Diversity and Equal Opportunities
  • Customer Focus
    Customer Focus
    • Customer Focus Overview
    • Our Markets
  • Insights
  • Careers
  • Contact
STI logo
  • Company
    Company
    • About STI
    • Our Team
    • Quality Assurance
    • Corporate Responsibility
    • Diversity and Equal Opportunities
  • Customer Focus
    Customer Focus
    • Customer Focus Overview
    • Our Markets
  • Insights
  • Careers
  • Contact

Quality Assurance

Accredited UK Sovereign defence electronics manufacturer.

Man checking quality
Scroll to explore
Blue gradient background

Ethical defence manufacturer

We are committed to delivering consistent, high quality electronic systems across all programmes. Our approach is straightforward; understand customer requirements clearly, build to the right standards, and maintain strong, long-term working relationships.

Our work is supported by a structured Business Management System and a full set of sector accreditations, alongside customer specific standards and all relevant statutory and regulatory requirements.

Our on-site Training Academy ensures every engineer works to the same technical and quality expectations. Through ongoing training, audit and process improvement, we focus on maintaining strong quality and delivery performance and meeting customer expectations every time.

Quality accreditations

JOSCAR – Joint Supply Chain Accreditation Register

Member of ADS Group – Trade Organisation for companies in the UK Aerospace, Defence, Security and Space Sectors

Member of Make UK Defence – Trade Organisation for companies in the UK Aerospace, Defence, Security and Space Sectors

Hook, UK

STI Cyber Essentials 2025 Certificate – Cyber Essentials Plus certificate

AS 9100 Rev D – Aerospace Quality Management

Nadcap Merit – Electronics

ISO/IEC 27001:2022 – Information Security Management

ISO 9001:2015 – Quality Management

ISO 14001:2015 – Environmental Management

ISO 45001:2018 – Occupational Health and Safety

Poynton, UK

STI Cyber Essentials Plus 2025 Certificate – Cyber Essentials Plus Certificate

AS 9100 Rev D – Aerospace Quality ManagementISO/IEC 27001:2022 Information Security Management

ISO 9001:2015 – Quality Management

ISO 14001:2015 – Environmental Management

ISO 45001:2018 – Occupational Health and Safety

Our customer focus

Our people understand the importance of the systems they support. We expect early problem solving, honest assessment and thorough execution. The aim is straightforward: to deliver systems our customers can rely on and that our teams are proud to sign off.

Explore your capabilities

Our markets

Plane

We work with defence, aerospace and security customers on programmes that depend on reliable electronic systems. Our teams deliver across land, air, sea and cyber, supporting applications such as sensing, communications and autonomous platforms.

Explore our markets
Female in the factory wearing a labcoat and goggles

Ready to deliver for you as your trusted partner.

Contact us

Proudly UK sovereign. All work delivered by qualified and experienced teams.

Company

  • About STI
  • Our Team
  • Quality Assurance
  • Corporate Responsibility
  • Diversity and Equal Opportunities
  • Contact

Customer Focus

  • What We Do
  • Our Markets

Legal

  • Privacy Policy
  • T&Cs of Sale
  • T&Cs of Purchase
  • Modern Slavery Act
  • Cookie Policy

Registered Office: 4th Floor, 24 Old Bond Street, London, England, W1S 4AW. Registered in England Number: 02292621.
VAT Registration Number: 260 9861 81. © 2025 STI Limited. All Rights Reserved.

This website has been Made with Maturity

Manage Consent
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
  • Manage options
  • Manage services
  • Manage {vendor_count} vendors
  • Read more about these purposes
View preferences
  • {title}
  • {title}
  • {title}