Cohort plc

Manufacturing Organisations

One Waterside Drive

+44 (0) 118 909 0390

Cohort plc

Company Profile

Cohort is the parent company of five innovative, agile and responsive businesses providing a wide range of services and products for British, Portuguese and international customers in defence, security and related markets.

Cohort was founded on the principle that SME-size businesses can prosper by being part of a larger group, where they can benefit from financial oversight, management support and the exchange of information and practices. We aim to achieve this while preserving the high growth potential of innovative independent businesses. We aim to add real value through the experience and contacts of our senior team while providing a light-touch but effective governance framework to our subsidiaries. Our objective is to deliver value to our stakeholders through our five operating subsidiaries: Chess, EID, MASS, MCL and SEA.

Chess is a leading supplier of electro-optical and electro-mechanical systems to the defence and security markets. 

EID is a Portuguese company who design and manufacture advanced communications systems for tactical and naval customers worldwide.

MASS is a data technology company with over 35 years heritage serving the defence and security markets in the UK and around the world. They provide electronic warfare operational support, digital services and training support to military operations. 

Marlborough Communications Limited (MCL) is a leading supplier of advanced electronic communications, information systems and signals intelligence technology to the defence and security sectors. 

SEA is a major supplier of solutions for the defence, transport and offshore energy markets alongside performing specialist research and delivering services include training and product support. 


Cohort is listed on AIM and its headquarters are in Reading, Berkshire and in total we employ around 950 core staff there and at our other operating company sites across the UK and in Portugal.


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Jay Whitelock

EA to Directors


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Lucy Hick

Group Head of Marketing & Corporate Communications


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Jonathan Clegg

Group Head of Strategy


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