About the event

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From its origin as a networking forum, 3CDSE has evolved to become the UK’s most diverse and forward-thinking security expo. The annual show takes place at Malvern’s Three Counties Showground, where 3CDSE is also gaining a reputation as an active touchpoint for leading-edge technology and innovative strategic thinking. 

As well as introducing SME’s to procurement decision-makers and influencers in the MOD and Law Enforcement agencies, the show is a successful forum for fostering mutually beneficial commercial discussions between SME’s and Primes. 3CDSE is proud of our ever-expanding network of connections and relationships.

3CDSE Army soldier camouflage forest

The theme of 3CDSE is Innovation, which includes cyber security, hardware and vehicles, UAV and counter-UAV, manned and unmanned vehicles, technology including Artificial Intelligence and communications.

Our location

The Three Counties of Herefordshire, Worcestershire and Gloucestershire comprise the hub of the UK’s defence and security industry – the “golden triangle” – with MoD based in Herefordshire, Qinetiq and the Malvern Cyber Cluster in Worcestershire and GCHQ in Gloucestershire, plus all the satellite industries which have grown up around them.

Several sources record that 90% of the UK’s defence and security innovation has its home in this triangle.

3CDSE always has its targets set on the new threat landscape – how air, sea and land capabilities are evolving to become fit for purpose today and prepared for the new challenges and capability requirements of tomorrow. 

The term ‘hybrid warfare’ has increasingly become the focus, with cyber security, data management, blockchain and space operations entering the conversation. 3CDSE's exhibitors and presenters showcase bold new capabilities to meet these elusive new threat environments, both real and potential.

These include Unmanned Underwater Vehicle (UUV) and Unmanned Surface Vehicle (USV) systems as well as Unmanned Aerial Vehicles (UAV) and Counter-UAV threats. 3CDSE Expo has an excellent external area where physical systems, hardware and vehicles can be demonstrated on a live scale.



The 2021 event welcomed over 1600 delegates and 130+ exhibitors and cemented 3CDSE’s reputation
as a forum for the military, suppliers, law enforcement and security agencies to
identify common interests, solutions and opportunities.

3CDSE anticipates...









Platinum Sponsors


3CDSE Official Shelter Partner


Gold Sponsors


3CDSE Cafe Sponsor


3CDSE Networking Zone Sponsor


3CDSE Media Partner


Silver Sponsors


Event Partners


Please note: 3CDSE and its trading company 3CDS (Trading) Ltd do not sell or pass on any 3CDSE contact details to third parties other than those that are expressly authorised to have access to that data for the proper functioning of their roles.

We work with Cyber Quarter, the Midlands Centre for Cyber Security/Univ of Wolverhampton, to ensure that our systems are safe, secure and robust. We are pleased to be rated in the top 10% of organisations for cyber security in the Aerospace and Defence & Security Industry. 

On occasion we are made aware of unscrupulous external actors who claim to hold data from exhibitions such as 3CDSE. Please be advised that any person offering such data and purporting to be acting on behalf 3CDSE is fraudulent. Any such perpetrators will be pursued by our sister company, Harrison Clark Rickerbys (hcr), a Top 100 law firm.

Our Security and IT experts advise that it is best not to respond to such emails as by doing so, you may be unwittingly verifying your own email address. If you have any concerns in this regard, please contact Anna Roby-Welford, Director, 3CDSE anna@3cdse.co.uk