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Developing, delivering, and supporting advanced, open, and cost-effective defence solutions that make our world safer

Engineered to Protect. It's what we do.

We are SEA. Together, through teamwork, collaboration and innovation, we’re delivering operational advantage to our customers while building a more sustainable future for all. 

SEA is a Cohort Plc Company

Our Expertise

Frigate Engineering Frigate Icon Defence Ship & Fleet Protection
Astute Submarine 4 Submarine Icon Defence Undersea Battlespace
Type 23 Frigates X2 Advanced Technology Defence Integrated Maritime Systems
Maritime Support Services Future Thinking Defence Maritime Support & Services
Soldier Weaponry Soldier Defence Land & Littoral

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Latest News

SEA Completes Sale of Intelligent Transport Systems Business 07 Jul 2025 SEA Completes Sale of Intelligent Transport Systems Business The sale follows several years of targeted investment and organisational development within the Intelligent Transport Systems division, aimed at ensuring it could operate as a self-sufficient, reliable, and profitable unit.
Joseph Oldham Receives Highly Commended Award For Outstanding Engineering Development 02 Jul 2025 Joseph Oldham Receives Highly Commended Award For Outstanding Engineering Development Joseph Oldham, has been highly commended as part of the Progression Award at the Engineering Trust Annual Awards.
SEA Celebrates North Devon Business Awards Win For Ancilia 24 Jun 2025 SEA Celebrates North Devon Business Awards Win For Ancilia SEA was awarded the Innovation & Technology Award in recognition of our industry-leading maritime defence technology, Ancilia.
Together We Engineer; Celebrating International Women in Engineering Day 23 Jun 2025 Together We Engineer; Celebrating International Women in Engineering Day It’s International Women in Engineering Day. We checked in with some of our engineers to see what they enjoy about being an engineer, what advice they’d give to young women wanting to go into the industry, and why this day is important to them. Together We Engineer, to keep our customers safe. 

Our Accreditations

Image of partnerships SEA Ltd hold. These include, Women in Defence Charter, Disability Confident, Cyber Essentials Plus, Association for Project Management, Women in Engineering Society

Head Office Address
Systems Engineering & Assessment Ltd,
Beckington Castle, 17 Castle Corner, Beckington, Frome, Somerset BA11 6TA

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