About us


Gamma was founded by Dr. Mike Nash and Dr. David Brewer. They were two of the first consultants to advise the British Government on information security matters in the early 1980s and played a significant role in establishing the first information security laboratories in Europe and developing the UK security evaluation criteria. Indeed, Mike ran the lead UK laboratory, having already worked within NATO using the US “Orange Book”. Over the period 1987 — 1992 they worked with the British, French, Dutch and German Governments to develop the European Information Technology Security Evaluation Criteria (ITSEC) and went on to help develop ISO/IEC 15408 — the “Common Criteria”.


They joined together in 1988 to create Gamma Secure Systems Limited and embarked on providing a wide range of information security consultancy services world-wide. Over the years they have worked in over 22 countries on assignments as diverse as smart cards and information security management.

In 1998, David was invited by the British Government to help develop a standard on information security and soon became a member of the five person team to develop British Standard 7799 Part 2 (2002), which in 2005 became ISO/IEC 27001 with very little change. Both Mike and David are members of the UK delegation to the ISO committee that deals with the 27000 series of standards and have been influential in the current revision of ISO/IEC 27001. Mike has been the project editor for multiple International Standards and David is currently a project editor for the revision of ISO/IEC 27004 (measurements).

David is also a director of IIJ-Exlayer Europe Limited, where he is particularly responsible for running their integrated management system, which conforms to ISO 9001, ISO/IEC 27001 and ISO 22301.

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Company legal details: Gamma Secure Systems Limited is a Company registered in England, Registered Number 2191864. Registered address: 52 High Street, Harrow-on-the-Hill, Middlesex HA1 3LL, United Kingdom.