About DSEI 2027
DSEI is a large international defence and security equipment exhibition in London. Its supply-chain zones feature precision engineering, machining, materials and manufacturing technology suppliers to the defence sector.
Scale, as published by the organizer: 1,700+ exhibitors; 45,000+ attendees (organizer figures).
Why it matters for machine research
Indicates defence manufacturing demand, a growing driver of orders for precision machine tools in Europe.
Machines and technology to look for
Compare suppliers on the same application questions.
Compare suppliers on the same application questions.
Compare suppliers on the same application questions.
Compare suppliers on the same application questions.
Compare suppliers on the same application questions.
How to work this show
Confirm certifications, traceability and inspection capability before discussing price or lead time.
Before the show, shortlist exhibitors from the official exhibitor list. After it, compare the machines you saw in the MBB machine directory and work out the installed cost with total installed cost.
Write down the material, tolerance and volume you need before you go. Ask every exhibitor the same questions, then compare the answers on MBB.
Facts at a glance
| Official name | DSEI – Defence and Security Equipment International |
|---|---|
| Organizer | Clarion Defence and Security |
| How often | Biennial |
| Venue | ExCeL London |
| Official site | dsei.co.uk |
Dates and venue checked against the organizer's page on 2026-11-06. Schedules change; the official site controls.