I/ITSEC
Nov 30, 2026 - Dec 3, 2026
DSEI (Defence and Security Equipment International) 2027
September 7, 2027 - September 10, 2027
London, United Kingdom
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About DSEI (Defence and Security Equipment International)
World-leading defense and security event connecting governments, military, and industry innovators.
DSEI 2027
DSEI 2027 runs 7–10 September 2027 at ExCeL London in London, United Kingdom.
DSEI — Defence and Security Equipment International — is a pivotal biennial event for the global defence industry, bringing ministries of defence, military officials, UK Front Line Commands and industry together from over 90 countries, with more than 1,600 exhibitors.
The event spans aerospace, land, naval, and space/cyber domains, with static and waterborne demonstrations at the Royal Victoria Dock alongside the exhibition halls.
Key Topics
- Aerospace
- Land defence
- Naval and maritime
- Space, cyber security and AI
- International defence and security
Quick Info
- Dates
- September 7, 2027 – September 10, 2027
- Location
- London
United Kingdom - Organizer
- Clarion Events
Industries
Upcoming Military & Defense Conferences
All military & defense conferences →Frequently asked questions
When is DSEI (Defence and Security Equipment International) 2027?
DSEI (Defence and Security Equipment International) 2027 runs September 7, 2027 – September 10, 2027.
Where is DSEI (Defence and Security Equipment International) 2027 held?
DSEI (Defence and Security Equipment International) 2027 takes place at ExCeL London in London, United Kingdom.
How do I register for DSEI (Defence and Security Equipment International) 2027?
Registration is handled by the organizer, Clarion Events — details and passes are on the official website.
Before you go to DSEI (Defence and Security Equipment International) 2027
For Attendees & Exhibitors · 5 min read
What to Wear to a Trade Show: Exhibitor & Attendee Dress Code Guide
By role and by industry — what reads as professional, what reads as out-of-place, and what your feet will thank you for at hour eight.
For Exhibitors · 6 min read
How Much Does It Cost to Exhibit at a Trade Show?
A 2026 cost breakdown by booth size and show tier — booth space, build-out, travel, staffing, and the line items that wreck budgets.
For Attendees · 4 min read
Trade Show vs Convention vs Conference vs Expo
What actually separates a trade show from a convention, conference, or expo — and how to figure out which one you're attending.