Europe's leading event for undersea defence and technology.

As the largest exhibition and conference dedicated to undersea defence technology, UDT brings together stakeholders from the industry, reflecting the international interest and investment in undersea security and defence solutions.

Throughout this three-day event, UDT gathers researchers, military end-users, and industry professionals from across the international naval community to evaluate, discuss and connect with like-minded industry peers to develop solutions, ranging from subsea to space. 

The includes senior military officials, European and International Ministries of Defence, technology suppliers, academia, and industry professionals, to assist end users with ongoing and emerging issues and seek valuable solutions. Interested in joining us in London?

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Conference

As the only undersea defence event with a highly technical conference, UDT 2026 will feature insights from NATO representatives and industry experts on global collaboration in advancing submarine capabilities.

The theme, "Advantage through undersea technology," highlights the need for joint efforts in delivering practical solutions. 

Want to find out more about the conference theme?

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Exhibition

70% of exhibitors regard UDT as the ideal location to meet key prospects.

This year, visitors explored the latest undersea defence technologies from world-renowned defence suppliers including, Babcock, BAE Systems, Kongsberg and SAAB.

What are the benefits of exhibiting at UDT?

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Visiting

85% of visitors consider UDT the ideal platform to meet key prospects. With a variety of opportunities, from attending our highly technical conference to networking with industry leaders, exhibitors, and military representatives, you’ll have ample chances to engage with your target audience.

What else can you gain from attending?

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UDT 2026: Hello London!

Undersea Defence Technology (UDT) 2026 returns to London, United Kingdom, and we will be hosting our esteemed event in the Excel London convention centre.

As the largest global event dedicated to undersea defence technology, our exhibition and conference reflect our desire for continuous learning, improvement, and development. The three-day event gathers the defence industry’s brightest minds from Europe and beyond.

The show brings together a vast selection of key members from the international naval community, including senior military officials, European and International Ministries of Defence, technology suppliers, academia, and industry professionals, to assist end users with ongoing and emerging issues and seek valuable solutions.

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NOVA Spektrum

History of UDT

Now in its 37th edition, UDT remains the leading event for the global undersea defence community. Each year, it showcases the latest innovations in undersea defence technology and fosters collaboration among nations and Ministries of Defence.

In 2026, UDT returns to London from 14-16 April, offering a unique chance to connect with key decision-makers. Curious about the history of UDT?

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UDT 2025