About Us

STS Defence provides electronic manufacturing and through-life system engineering services; engaging with our customers through experience, expertise and a commitment to quality.
We focus on customer value and satisfaction, working in partnership with customers to develop initial concepts into reality with divisions to match the needs of our customers:

Manufacturing Services has an extensive aerospace, maritime, defence and commercial portfolio of capabilities in box build, PCB assembly, cable and harness manufacture and fabrication.

Engineering Services delivers innovative solutions in the integration and support of maritime communication, multimedia and sensors for the UK defence market.

STS Nuclear provides specialist support and training to civil and defence nuclear sectors.

Recently launched, IntelliMon which focuses on intelligent monitoring systems for industrial, maritime and public safety applications.

We were the UK’s 1st company to gain NADCAP Accreditation for the manufacture of Printed Circuit Boards (AC7120) and in 2010 we became the 1st company in Europe to be accredited with NACDAP Cable & Wiring Assembly (AC7121).

You can download a datasheet on STS Defence’s capabilities below:


Situated in Gosport, on the western shore of Portsmouth Harbour, STS Defence is an SME with around 130 employees. We offer rewarding career opportunities and apprenticeships and are always looking for outstanding individuals to complement our organisation.

Along with Primetake, producers of specialist ammunition, STS Defence is part of the Key Technologies group.

If you feel you can make a difference here at STS Defence please review our vacancies

Membership and Accreditations: