NACOSS Gold Means that Churchill Security Systems Ltd: Has been thoroughly security vetted Is rigorously inspected twice a year to ensure we are maintaining standards in both the quality of our installations and in the way we run our business. Is properly insured. Operates a 24hr callout service Are able to complete a thorough security survey of your premises. Install reliable, up to date equipment. Can issue a certificate of compliance. Meet the relevant British and European Standards Operate to the highest level of business excellence through achievement of ISO9001 Quality Management. As a NACOSS Gold company we meet the requirements of the police, through the Association of Chief Police Officers (ACPO) Policy on intruder alarms, who will respond to confirmed alarm activations for monitored systems. Insurers will usually insist that you use a NACOSS Gold approved company as they meet the requirements of the Association of British Insures (ABI).