Business Details
29 Years
experience
Emergency
services
Trusted Fire and Security Solutions in Welwyn Garden City
Mercury Security Systems has been a trusted provider of fire and security solutions since 1997, serving residential, commercial, and public sectors across the UK. Our team of SC-vetted professionals combines technical expertise with ISO 27001-certified processes to deliver bespoke security systems tailored to client needs. With a 40-strong workforce and accreditations including ISO 9001, NSI Gold, and BAFE, we prioritise quality assurance through rigorous testing and compliance.Our partnerships with industry leaders like Gallagher and Honeywell enable cutting-edge technology integration, while our commitment to ESG principles ensures sustainable operations. We maintain long-standing client relationships through 24/7 support, nationwide coverage, and a focus on continuous improvement in safety standards.
Services
Security Systems
Fire Alarms
CCTV Installation
Access Control
Intruder Alarms
Fire Extinguishers
Gate Automation
Security Maintenance
Fire Risk Assessment
Door Entry Systems
Details
- Year established: 1997
Highlights and features
- We have over 25 years of experience in bespoke security solutions.
- Our team holds SC security clearance for high-security projects.
- We offer 24/7 nationwide maintenance and emergency response services.
- Our ISO 27001-certified processes ensure cybersecurity compliance.
- We partner with leading technology providers like Honeywell and Axis.
Associations and certifications
- ISO 9001
- ISO 14001
- ISO 27001
- ISO 45001
- NSI Gold
- BAFE
- Fire Industry Association (FIA)
- CHAS Elite
- SafeContractor
- Constructionline
What people say
Exceptional aftercare service
Technical expertise
Reliable installations
Professional engineers
Timely project delivery
Services
Security Systems
Our bespoke security systems integrate advanced technology from leading brands to protect properties across residential, commercial, and public sectors. Each solution combines CCTV, access control, and intrusion detection tailored to client requirements. With nationwide installation and 24/7 maintenance support, we ensure continuous protection and compliance with evolving safety standards.
Fire Alarms
We design and install fire alarm systems meeting BS5839 standards, including conventional and addressable systems. Our solutions feature VESDA early smoke detection technology for high-risk environments. All installations include compliance testing, staff training, and ongoing maintenance to ensure operational readiness across commercial and public buildings.
CCTV Installation
Our CCTV solutions incorporate HD and IP-based cameras with remote monitoring capabilities. Systems integrate with access control for enhanced security, offering evidential-quality footage and scalable storage options. We specialise in both new installations and upgrades, ensuring compliance with data protection regulations and providing nationwide maintenance support.
Access Control
We implement access control systems ranging from standalone units to fully integrated networks. Solutions include biometric readers, proximity cards, and IP-based systems compatible with existing infrastructure. Our installations ensure secure perimeter management while maintaining compliance with fire safety regulations and providing audit trail capabilities.
Intruder Alarms
Our intruder alarm systems feature wireless and wired configurations with police response options. Installations include motion detectors, glass break sensors, and perimeter protection integrated with CCTV. We provide risk assessments, NSI-approved monitoring, and maintenance contracts to ensure system reliability for residential and commercial properties.
People
Sue English
Head of Security, Greene King
With over 20 years in corporate security, Sue English oversees Greene King's safety operations. She praises Mercury Systems' comprehensive approach, noting their ability to deliver complex projects while maintaining exceptional aftercare service standards.
Andrew Mortimer
Chief Operating Officer, Barclays Capital
Andrew Mortimer manages Barclays Capital' operational strategy. He highlights Mercury Systems' technical expertise and reliability in delivering high-security solutions that consistently exceed industry benchmarks across multiple large-scale projects.
Steve Norris
Project Co-ordinator, Bouygues FM UK Ltd
Steve Norris oversees facility management projects for NHS trusts. He commends Mercury Systems' professional engineering team for their courteous service delivery and technical competence in healthcare security installations.
Questions
What security services does Mercury Systems offer?
We provide comprehensive security solutions including CCTV systems, access control, intruder alarms, gate automation, and integrated security systems for residential and commercial clients.
Are Mercury Systems' installations compliant with industry standards?
All our systems meet BS5839 standards and carry NSI Gold accreditation, with ISO-certified quality management processes ensuring full compliance with current regulations.
Do you provide maintenance for existing security systems?
Yes, we offer nationwide maintenance contracts for all security systems regardless of original installer, including 24/7 emergency response and scheduled preventative maintenance.
Can Mercury Systems handle large-scale projects?
Our team manages complex installations across multiple sites, with experience in government facilities, educational institutions, and commercial properties throughout the UK.
What accreditations does Mercury Systems hold?
We maintain ISO 9001, ISO 27001, NSI Gold, BAFE, and CHAS Elite accreditations, demonstrating our commitment to quality and safety standards.
