The Gold Standard of Security Systems

We invest in our excellence. To maintain the NSI NACOSS Gold accreditation we are audited 3 times a year, and our work must always be up to the Gold standard for us to maintain the accreditation. This isn’t cheap on our part, but we believe in always providing quality workmanship and the Gold standard ensures that we’re always on the top of our game.

NACOSS is now recognised more as an acronym for codes of practice for the security industry, but it is a legacy term from the former National Approval Council for Security Systems. The Council was merged into the National Security Inspectorate (NSI) some years ago and its valuable guidance documents are still in circulation, although they are gradually being updated.


NSI provide the industry’s premier schemes for accrediting security installation and maintenance companies, such as A M Fire & Security Systems, and choose to use the NACOSS acronym for their Gold logo.

NSI’s schemes incorporate all of the relevant British and European standards that describe the specific requirements for security systems, such as the electromagnetic compatibility of components; or the requirements for interconnections equipment using radio frequency techniques.

Always keeping up-to-date

Suffice to say that there is an immense volume of knowledge we need to be able to demonstrate when NSI comes to re-examine us every year! 

Not only is there a huge learning commitment for us, but we need to keep up-to-date as new revisions are issued. In our monthly management meetings we actually discuss new legislation and how it affects our operations.