CSS is a privately owned UK SME based in Essex, United Kingdom with a strong engineering background in varied disciplines including analogue, digital and radio frequency electronics, power systems, mechanical engineering and control software development. The Company has a long history working with US equipment manufacturers to bring their products to the UK market with a customer base that includes UK Government departments, intelligence agencies, defence establishments and systems houses in the UK, US and Europe.

CSS can provide a comprehensive marketing, sales and import service for your company, acting in various capacities including exclusive or non-exclusive International Sales Representative (ISR), Authorised Reseller or Sales Consultants, all backed by our technical expertise and engineering facilities. We are able to provide assistance with the following activities:​

  • Customer identification and networking

  • Product promotion

  • Literature/media design, production and distribution

  • CAD modelling & drawing/illustration

  • Sales/Technical presentations

  • Product demonstrations

  • Technical proposals

  • Exhibition attendance

  • Contract bulletin monitoring

  • Opportunity identification

  • Tender pre-qualification

  • Tender writing

  • Budgetary estimates and quotations

  • Export license applications

  • Order processing

  • Foreign currency forward contracts and payment processing

  • Import of goods

  • Pre-delivery inspection and test

  • CE/DEF-STAN product qualification

  • Warranty support

All personnel employed by CSS involved in Sales and Marketing activities hold a minimum security clearance at SC level, while all Technical and Engineering staff hold higher clearances enabling them to discuss detailed technical information and project applications with customers and meeting pre-tender qualification requirements to partake in tenders for sensitive programmes.


CSS’s business has been founded on the international representation of US manufacturers and we have been importing and selling equipment controlled by US Department of State ITAR and BIS/EAR-99 regulations into the UK for 20 years. Our staff have in excess of 75 man years’ experience in working with licensed equipment in sales, support, repair and system integration roles and are fully conversant with procedures and paperwork for export license applications. We have arranged and facilitated the temporary and permanent transfer of possession and ownership of licensed equipment on behalf of our customers. We are able to advise on and facilitate the smooth purchase, import, delivery and deployment of world leading technology to the UK community.

CSS also has experience in the import of goods using End-Use Relief (EUR) from Her Majesty’s Revenue and Customs (HMRC) following issue of a valid EUR certificate from UK MoD or one of its contractors, and can ensure full compliance with all regulations relating to import duty in cooperation with our freight forwarders.

CSS actively maintains a Quality Management System and Quality Procedures Manual accredited to BS EN ISO9001:2008,  and we are currently implementing the transition to the new BS EN ISO9001:2015. A copy of our Certificate No. GB2002886 is available from the link on the footer of this website.