Established in 1978, Mercury Alarm Services is a family run business that has over 40 years’ experience in the security industry. With MAS, quality is assured. We are NSI (National Security Inspectorate) Gold Certified, and accredited by BSI to the ISO 9001:2015 Quality Management Systems standard. MAS are also approved for health and safety practices by CHAS, SafeContractor and Constructionline. Whether your premises are domestic or commercial, our expert team will design the perfect system to suit your requirements. At Mercury Alarm Services, we strive to deliver the best by offering products and services that are both reliable and affordable. All our engineers are DBS (formerly CRB) checked, as well as being put through a full 10-year security screening process, as set out in BS 7858. Our installation and servicing processes are carried out in-house by our experienced, fully-trained team of engineers. MAS specialise in the design, installation and maintenance of CCTV, intruder alarms, fire alarms, access control and data cabling. MAS also repair, take over or upgrade existing systems to the relevant industry standards, supplemented by a 24-hour emergency call-out service. Based in Formby near Liverpool, MAS has convenient access to the motorway network and are able to provide our services nationwide.