Cyber attacks increasingly affect government, defence and industry networks across borders, requiring coordinated international training and response planning. Multinational exercises are used to rehearse joint procedures and strengthen operational links between partner nations and organisations.
The Ministry of Defence and Foreign, Commonwealth & Development Office announced on 11 February 2026 that the UK will lead the multinational Defence Cyber Marvel cyber defence exercise from Singapore. More than 2,500 personnel from 29 countries and 70 organisations will take part in the simulated operational event. The exercise brings together defence, government and industry teams to rehearse coordinated responses to cross-border cyber threats.
The week-long exercise will be run from Singapore and will involve personnel from multiple countries and organisations. It is designed as a simulated operational environment reflecting realistic cyber threat scenarios.
Exercise Announcement and Leadership
The Ministry of Defence and the Foreign, Commonwealth & Development Office said the UK will lead Defence Cyber Marvel 2026. The exercise is a multilateral cyber defence event conducted by the British Army Cyber Association.
It has developed into a tri-service operation led by Cyber and Specialist Operations Command. The announcement links the exercise to UK defence cyber coordination and joint operational training.
- UK-led cyber defence exercise
- Run by British Army Cyber Association
- Tri-service cyber operation
Scale and International Participation
The exercise will bring together more than 2,500 personnel from 29 countries and 70 organisations, forming 36 teams. Participants include UK Defence and other government departments such as the National Crime Agency, the Department for Work and Pensions, the Cabinet Office, and the Department for Business and Trade.
Industry partners will take part alongside military teams in the exercise environment. The structure is designed to support coordinated multinational participation.
Participation Overview
| Personnel | More than 2,500 participants involved in the exercise. |
| Countries | Teams drawn from 29 participating nations. |
| Organisations | 70 organisations across defence, government and industry. |
| UK departments | Includes NCA, DWP, Cabinet Office and Department for Business and Trade. |
Purpose and Operational Design
The exercise is designed to test the ability of participating nations to coordinate responses in a realistic operational environment. Scenarios mirror genuine cyber threats and are organised through multiple storylines.
Activity is split between blue and red teams and controlled from a central command point. Scenarios examine operational impacts and how escalating pressure affects team and commander decisions.
- Simulated threat scenarios
- Blue and red team structure
- Central command control
Singapore Host Role and Indo-Pacific Focus
Singapore will serve as the exercise hub for the first time following the previous event in the Republic of Korea. The announcement says this reflects UK cooperation with Indo-Pacific partners on shared security challenges.
The location is described as supporting deeper cyber defence partnerships in the region. It also aligns with wider UK security cooperation activity with Singapore.
Exercise Setting and Cooperation
| Host location | Singapore serving as the central hub for the exercise. |
| Regional focus | Supports Indo-Pacific cyber defence cooperation. |
| Partnership aim | Strengthens collaboration with trusted regional partners. |
Defence Skills and Industry Collaboration
Industry partners will participate alongside defence personnel to develop and test emerging technologies in a controlled environment. The exercise allows technologies to be stress-tested against realistic threat scenarios.
The event also highlights professional cyber development opportunities across UK Defence. It includes exposure to traditional IT systems and more complex industry control systems in a pressured setting.
- Industry partner participation
- Technology stress testing
- Professional cyber development
Strategic Defence Review and Cyber Force Context
The announcement says the exercise supports the Strategic Defence Review ambition to shift to warfighting readiness through integrated capability. It references defence cyber skills programmes and new entry routes into Defence careers.
It also notes the stand-up of the Defence Cyber & Electromagnetic Force led by Air Vice-Marshal Tom Ashbridge. This force brings together military personnel, defence companies and cyber teams focused on cyberspace operations.
Stakeholder Comments
Nik Mehta, British High Commissioner to Singapore said;
“This year’s Defence Cyber Marvel showcases the deep cooperation between the UK and trusted partners like Singapore — a powerful reminder of the strength of our Strategic Partnership. In an increasingly turbulent and complex security landscape, we recognise the need to build a safer, more resilient digital domain”.
Air Marshal Suraya Marshall, Deputy Commander of Cyber and Specialist Operations Command, said;
“DCM 2026 places cooperation and shared learning at its heart. With cyber-attacks from our adversaries now a daily threat to the UK, our allies and our partners, this exercise builds relationships and shared procedures essential for responding to cross-border threats.”
Wrapping Up
Defence Cyber Marvel 2026 will be led by the UK from Singapore as a multinational cyber defence exercise involving government, defence and industry participants.
The programme brings together thousands of personnel across many countries to rehearse coordinated responses in simulated cyber scenarios. UK departments say the exercise supports joint readiness, professional development and international cooperation across defence cyber operations.
Sources: Ministry of Defence and Foreign, Commonwealth & Development Office.
Prepared by Ivan Alexander Golden, Founder of THX News, an independent news organisation delivering timely insights from global official sources. Combines AI-analysed research with human-edited accuracy and context.
