As the flagship defence event for the UK, DSEI promotes the UK’s defence ethos, agenda and leadership while encouraging opportunity and cooperation with our global allies. The world’s leading defence organisations and most influential stakeholders rely on DSEI’s unique ability to bring the right people together, at the same time.

DSEI 2025 Defence Exhibition & Trade Show at ExCeL London, 9-12 Sept. Connecting the defense & security supply chain on a global scale

Exhibiting at DSEI positions your organisation at the heart of the defence and security industry, showcasing your cutting-edge solutions to an influential and global audience.

Defence and Security Equipment International (DSEI, formerly stylized DSEi) is a biennial defence and security trade exhibition which serves as a forum between governments, national armed forces, industry, and academics, held at ExCeL London. DSEI 2019 comprised c. 1700 exhibitors from 58 countries, [1] and DSEI 2023 is scheduled for 12–15 ...

Gain unrivalled access to international governments, Ministries of Defence, military officials, and all UK front line commands to understand global defence priorities and procurement opportunities. Register your interest to visit DSEI and be the first to hear when registration goes live

DSEI London runs from Tuesday 9th to Friday 12th September 2025. Access invaluable networking opportunities and live-action demonstrations across the DSEI exhibition’s Aerospace, Land, Naval, Security & Joint Zones.

DSEI connects governments, national armed forces, industry thought leaders and the entire defence & security supply chain on a global scale. With a range o. DSEI 2025 is held in London, United Kingdom, from 9/9/2025 to 9/9/2025 in ExCeL London.

We are excited to be part of DSEI, the UK’s flagship defence event that brings together the world’s leading defence organisations and key stakeholders. As a premier platform for collaboration, innovation, and strategic partnerships, DSEI showcases the UK’s defence leadership while fostering global cooperation.

DSEI is a pivotal event for the global defence industry. As the flagship defence event for the UK, DSEI promotes the UK’s defence ethos, agenda and leadership while encouraging opportunity and cooperation with its global allies.

As the flagship defence event for the UK, DSEI promotes the UK’s defence ethos, agenda and leadership while encouraging opportunity and cooperation with our global allies. The world’s leading...