14-17 September 2021, Excel London                       

Clarion Defence & Security

Clarion Defence & Security

The Clarion Events’ portfolio of defence and security events is acknowledged as the world’s leading forums where high level government officials and senior military personnel converge. Leading global equipment and services providers meet to share ideas, discuss industry developments, conduct business, develop partnerships and network for future growth.  Whilst military systems and technology are at the core of the industry and the events, the sector is also diversifying and adapting to meet the changing needs of the world. In addition to the threat of war, national security can be threatened by humanitarian disasters resulting in mass displacement of people or food and water shortages, terrorism or pandemic.

The UK defence industry represents ten per cent of UK high technology manufacturing and is the number one exporter in Europe, second only to the US globally. DSEI, which is based at ExCeL London, is a crucial part of that industry. The industry employs over 300,000 people and generates over £35 billion per year to the UK economy. The industry also works hand-in-hand with the UK Armed Forces from factory to frontline, for example over 6,000 industry personnel are currently working alongside our troops in Afghanistan.

The economic benefits are not  just about the defence industry. The 35,000 exhibitors, visitors and contractors attending DSEI occupy over 100,000 room-nights at London hotels during the week of the event, generating an estimated £23m direct benefit to the London economy in the process, even before taking into account all of their associated expenditure on travel, restaurants and the like across the capital during their stay.

All defence and security exhibitions in the UK including DSEI can serve only the legitimate defence and security industry which is the most tightly regulated industry in the world.  This means exhibitors and visitors must adhere to the highest regulatory scrutiny, complying with UK and international laws, treaties and conventions. DSEI itself works closely with government departments including MOD, Foreign and Commonwealth Office, BIS and Home Office to ensure this strict compliance with all rules, regulations and laws. Furthermore, the UK Government itself is responsible for inviting international delegations.


DSEI 2021


LAAD Security

US/Canada Border Conference


Middle East



DSEI Japan

  • DSEI showcases the best of British defence technology and innovation on the world stage. The UK Government looks forward to engaging with strategic partners, international delegations and pioneering defence companies on the global defence and security agenda.
    Anne-Marie Trevelyan MP, Minister for Defence Procurement
    UK MOD
  • I very much look forward to continuing my personal support to DSEI. It provides an excellent opportunity to explore the development of airpower capability, through engagement with the widest range of industry and international partners.
    Air Chief Marshal Sir Stephen Hillier KCB CBE DFC MA RAF Chief of the Air Staff
    Royal Air Force
  • I much look forward to DSEI. We intend to build on the very positive experience as we construct the partnerships we need to deal with the complexity of the future operating environment
    General Sir Nicholas Carter KCB CBE DSO ADC Gen Chief of the Defence Staff
    Ministry of Defence
  • Once again the Royal Navy is proud to be at the vanguard of DSEI 2019 and I look forward to what I know will be a hugely beneficial opportunity for us all to explore maritime warfare development with so many partners from industry and academia, and with our counterparts from overseas.
    Admiral Sir Philip Jones KCB ADC, The First Sea Lord and Chief of Naval Staff
    Royal Navy
  • DSEI is a highlight within the defence calendar, I use it to find out what the most recent developments are in every technological area affecting for defence. Without DSEI I fear this sort of interaction, information exchange and knowledge of developments across all domains would be lost. DSEI is an invaluable international biannual event .
    Rt Hon Dr Julian Lewis MP, Chairman, House of Commons Defence Select Committee
    UK Parliament
  • DSEI is a fantastic showcase for defence companies where international buyers, sellers, developers, thinkers, educators and the trainers can all get together. The UK defence industry is looking to recruit more engineers, scientists and developers into 200,000 jobs and up to 10,000 apprentices within UK defence companies. DSEI is an excellent tool to highlight the challenges the industry face as well as showcase its capabilities domestically and overseas.
    James Gray MP, House of Commons Defence Committee
    UK Parliament

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