• STS Defence grey icon

    Enclosures and consoles, including complex panels and box build, sub-system assembly and build to print

  • STS Defence grey icon

    Platform expertise for installing, integrating and setting-to-work complex systems

  • STS Defence grey icon

    Surface mount and through-hole PCB capabilities, cables and harnesses for air, land and marine applications

  • STS Defence grey icon

    Subject matter expertise in mission-critical satellite communications, networks, electronic warfare and deployed multimedia services

Agile and responsive with a passionate belief and commitment to quality

HMS Queen Elizabeth and HMS Dragon

Adaptable approach to design, engineering and manufacturing

Soldier using Firestorm

Developing solutions for your programmes and business

System Assembly

  • Design and manufacture of enclosures and consoles for aerospace and military applications
  • Complex panel and box build
  • Subsystem assembly and build to print
  • Water-cooled, ingress-protected equipment racks for harsh environments
  • Control units for power systems
  • Communications masts and antennas
  • Containerised control and communication solutions
STS Defence Design and Manufacture Apprenticeship Career Building

System Integration and Commissioning

  • System engineering delivery and configuration control
  • Platform expertise for installing, integrating and setting-to-work complex systems
  • Subject matter expertise in mission-critical satellite communications, networks, electronic warfare and deployed multimedia services


  • Mechanical and electrical installation
  • Data and fibre optic installation and testing
  • Setting-to-work, trials and commissioning
  • Network specialists
  • Safety engineers
  • All activities are compliant with current defence standards and commercial shipping guidelines.
  • Installation site surveys, preparation and management, feasibility studies and reports

Technical publications

  • Installation design solutions
  • Technical documentation
  • Safety cases and management

PCB Assembly

  • Nadcap AC7120 accreditation at Merit status for Circuit Card Assembly
  • Single board prototypes to high volume production
  • Two surface mount lines and conventional through-hole
  • Leaded and lead-free (SMT, TH and Wave)
  • BGA and X-Ray inspection capable
  • Conformal coating
  • Environmental stress screening
  • Automatic optical inspection
  • IPC-A-610 operators
STS Defence Production Operatives Design and Manufacturing


  • Nadcap AC7121 accreditation at Merit status for Cable and Harness Assembly
  • Electrical and data cable looms and bespoke wiring harnesses for air, land and marine applications
  • Aerospace wiring looms to IPC-WHMA-A-620 workmanship standards
  • Harsh environment and subsea cable and connector solutions
  • Cable braiding – steel, copper and Nomex™
  • Fibre optic cable assembly
STS Defence Production Operative Design and Manufacturing

Test and Evaluation

  • Automated Test Equipment design and development
  • Functional electrical, mechanical and system level testing
  • Computational fluid dynamics analysis
  • Finite element analysis
  • Electrical safety
  • Hyperbaric pressure testing to 3,000psi
  • Electronics cooling assessment and thermal imaging
  • Antenna testing
  • Non-destructive structural testing
  • High/low temperature and humidity testing
  • Ingress protection
  • EMC, shock and vibration testing
STS Defence Design & Manufacturing Production Operative

Tools and Facilities

  • Design and tooling of mouldings
  • TIG, MIG and spot welding (coded welders)
  • Precision milling and turning
  • Painting and finishing – wet, dry, powder, silk screening, engraving and plate finishing
  • Amada® punch press and fold, small to high volume, steel and aluminium

Subsea Systems

Highly-specialised, bespoke subsea connectors, electrical umbilicals, cables and antennas designed for use in under-sea or harsh environments.

We specialise in adapting commercially available products for use in subsea and harsh environments, tailored to specific customer needs. This allows us to offer a very wide range of connectors at a very competitive cost and lead times when compared to traditionally manufactured subsea connectors.

  • Design
  • Prototyping
  • Manufacture
  • On-site moulding and over-moulding for Polyurethane, Neoprene and Polyethelene
  • Metal to glass seals (up to 3600m depth)
  • Pressure Testing (to 10,000psi)
Subsea connectors subsea capabilities at STS Defence

Project Management

  • Project Management
  • Effective project management and delivery
  • Best-practice management process based on APM and PRINCE2 methodology
  • Procurement and supply chain management
  • Stakeholder engagement and customer reporting
  • Risk, issues and opportunities and assumptions tracking, analysis and reporting
STS Defence team member


  • Category management approach to managing supply chains
  • Identification and mitigation of supply chain risks
  • Supplier base developed and managed in accordance with CIPS best practice
  • Managed and reviewed Approved Supplier List
  • Robust export-controlled items plan, assures compliance to both the ITAR and EAR

View our Case Studies

HMS Queen Elizabeth leaves Portsmouth

Consoles and Equipment Racks

Read the case study
Royal Navy flight deck

Deployable Support Containers

Read the case study
Aircraft engine Nacelle

Engine cases for Vector Aerospace

Read the case study
Ships Engine

Rolls-Royce Engine Control Unit

Read the case study

Contact us to find out more

STS Defence female apprentice against a white wall looking at the camera

Opportunities for work, apprentices and graduates

View our Vacancies