Defence & Security Equipment International (DSEI) London

DSEI – Defence & Security Equipment International is one of the world’s most prominent trade events for the defence and security sector. Since its inception in 1999, it has been a key fixture in the global defence and security landscape. More than just an acronym for “Defence & Security Equipment International”, DSEI represents a well-established platform that actively shapes global dialogue between the military, industry, politics, and academia. Every two years in September, the state-of-the-art ExCeL London becomes a hub for security policy discussions and technological innovation.

Organised by Clarion Events Ltd., a seasoned host of international large-scale exhibitions, DSEI stands out not only for its scale but above all for its thematic focus. With a clear strategic orientation, the event addresses the operational and technological challenges faced by armed forces and security stakeholders worldwide. Key topics such as digital transformation, artificial intelligence, cyber resilience, modern training concepts, and agile procurement are explored in direct relation to current threat scenarios.

What sets DSEI apart is its well-structured layout. The exhibition is divided into dedicated zones, each forming its own innovation ecosystem. Industry-specific solutions are showcased across areas such as aerospace, naval and land forces, medical technology, cyber technology, and advanced manufacturing. Within this environment, global corporations, tech startups, security agencies, and military decision-makers come together on equal footing.

A defining feature of DSEI is the direct, practice-oriented exchange between exhibitors and professional visitors. This interaction offers firsthand insights into emerging technologies and the latest developments in security policy — in real time.

ExCeL London provides the ideal setting for an event of this scale. Conveniently located in East London and well-connected by public transport — including the Elizabeth Line and the Docklands Light Railway — the venue offers excellent infrastructure, spacious conference facilities, and advanced technology. It creates optimal conditions for international networking, strategic dialogue, and the development of long-term partnerships.

The Defence & Security Equipment International (DSEI) will take place on 4 days from Tuesday, 09. September to Friday, 12. September 2025 in London.