9-12 Sept 2025
ExCeL, London

The world leading defence and security event

DSEI connects governments, national armed forces, industry thought leaders and the global defence & security supply chain on an unrivalled scale.  With a range of valuable opportunities for networking, a platform for business, access to relevant content & live-action demonstrations, the DSEI community can innovate, share knowledge, discover & experience the latest capabilities across the Aerospace, Land, Naval, Security & Joint domains.