Defence

Building Services and sustainable design consultancy for Defence

Secure, resilient, sustainable infrastructure

SDS is a trusted building services and sustainability consultancy, delivering mission-critical facilities across the UK defence estate. Our security-cleared engineers, working with our accredited IT system provide practical, resilient, and adaptable solutions that meet MOD standards, minimise operational risk, and integrate sustainable technologies aligned with Net Zero goals.

Our work covers a balance of refurbishment & facility upgrade along with significant new build and master infrastructure planning. Specific examples include single living accommodation, warehousing, offices infrastructure, maintenance, production facilities, health and welfare.

  • Mechanical & Electrical (M&E) Design

  • Sustainability DREAM & Net Zero Solutions

  • Digital Engineering & BIM

Adrian Montague

Defence Director

Adrian leads our defence work, bringing over 20 years’ experience delivering engineered solutions of mission-critical infrastructure across the UK defence estate. He works closely with clients and contractors to ensure designs are resilient, compliant, and inherently sustainable, supporting operational readiness while balancing the unique challenges of defence environments.

Our Defence Expertise

  • MEP Design for Defence Facilities – Mechanical, Electrical and Public Health systems for complex technical assets & infrastructure.
  • Standards & Compliance – Designs fully aligned to MOD JSP, DMG’S & CTM standards, Defence Infrastructure Organisation (DIO) protocols, and fire/life safety requirements.
  • Mission-Critical Systems – Engineering resilient power, HVAC, specialist gases, and secure communications infrastructure in high-dependency environments.
  • Modern Methods of Construction (MMC) – Expertise in modular and prefabricated solutions to speed delivery, improve quality, and minimise disruption on secure sites.
  • Digital Engineering & BIM – ISO 19650-compliant Revit models, clash detection, COBie outputs, and digital twin support for asset management.
  • Sustainability & Net Zero – Low- and zero-carbon systems, energy modelling, and carbon reduction strategies aligned with supporting the MOD’s Net Zero Carbon 2050 targets

Why defence clients choose SDS

  • Proven track record – decades of experience delivering complex upgrades, refurbishments, and new facilities across the defence estate.
  • Trusted advisors – a collaborative approach with DIO, prime contractors, and end users to deliver secure, reliable solutions.
  • Security assured – security-cleared teams, Cyber Essentials Plus certification, and experience working with data at Official Sensitive designation.
  • Resilient by design – engineering that minimises downtime and ensures operational continuity for mission-critical environments.
  • Sustainability built-in – supporting the MOD’s sustainability and carbon reduction ambitions while safeguarding long-term resilience.
  • Recognised quality – Queen’s Award for Enterprise in Sustainable Development and Construction News Consultancy of the Year. Informed and knowledgeable team – experienced in the delivery, engagement and handling of UK defence and secure infrastructure.

Engineering for national security

We are proud to support the UK defence estate, designing and delivering secure, resilient, and sustainable facilities. By combining deep technical expertise with a collaborative approach, SDS ensures infrastructure is fit for today’s operational demands and future challenges.

“Working with SDS gave us better options we could pass down to our client for a complex M&E project working in a secure environment. Together we created value engineering solutions that aligned to their construction programme.”

Adrian Searl, Defence Director, NG Bailey Group

Projects

Get in touch

Whether you’re looking to maximise energy performance or navigate the complexities of service coordination on constrained sites, SDS offers the insight, flexibility, and technical expertise to act as your trusted MEP partner. We will work with you at every stage to deliver efficient, buildable solutions that work.