Developing a digital and sustainable world together
 

SII UK is a specialised provider of software, systems and electronic engineering, project management, and IT services with a focus on the aerospace, defence and space domains but also covering transportation and energy. We cover the length and breadth of the UK. 
Celebrating our 10th anniversary in 2025, we're proud to be part of the global SII Group, which brings over 40 years of industry expertise to our operations.

Our Mission
At SII UK, our mission goes beyond conventional engineering services. We develop sophisticated information and mission systems that form the backbone of critical operations in aerospace, defence and space. We're passionate about contributing to the design and development of future products and services that advance our clients' capabilities and strategic objectives.
 

We combine technical expertise with deep industry knowledge to deliver solutions that address complex challenges. Our engineering approach focuses on creating robust, scalable, and secure systems that meet the exacting standards of defence and space applications.

Through collaborative partnerships with our clients, we aim to be more than just a service provider—we strive to be a trusted advisor and innovation partner. We're committed to understanding the unique requirements of each project, enabling our clients to achieve their missions while preparing them for future technological advancements.

By delivering exceptional technical solutions, we help our clients maintain their competitive edge and operational excellence in environments where precision, reliability, and security are paramount.

At SII UK, we are driven by a shared vision of delivering exceptional value to our clients, fostering an inclusive and collaborative work culture, and being leaders in innovation delivering engineering services. As the Managing Director of SII UK, I am proud to be part of a company that continually sets itself apart through its commitment to excellence, quality, and operational efficiency. Our company motto, "Be Ambitious," reflects our approach to every project and challenge. We continuously push boundaries to deliver exceptional results for our clients. While celebrating a decade of excellence in the UK, we leverage the strength, resources, and knowledge of our global parent company, bringing international best practices and half a century of experience to every engagement.

London 

Dawson House, 
5 Jewry Street Fenchurch
London, EC3N 2EX

Farnborough 

Cody Technology Park, 
Farnborough GU14 0LX 

Belfast 

Concourse, 
1 Queens Rd, 
Belfast BT3 9DT

Chester

Unit 8, Europa Court, 
Dee View Boulevard, 
Chester, CH1 4NP