Commercial Intruder Alarm Systems Available Across the UK
Fortify ES offers Grade 2 and Grade 3-certified commercial intruder alarm systems, including wireless and wired detection, to help you protect your premises with 24/7 monitoring.
Businesses We Protect






Why Do Businesses in the UK Face Persistent Intrusion Threats?
Commercial break-ins affect thousands of businesses annually, with burglaries occurring in grocery stores, construction sites, and even corporate buildings. Beyond property damage, intruders also disrupt business operations and compromise employee safety. For this reason, commercial intruder alarm systems are essential for immediate detection and prevention.
Certified & Monitored Intruder Alarm Protection Provider
Fortify ES is a specialist provider of commercial intruder alarm systems with over 25 years of experience. We support large businesses, including brands such as Popeyes, by helping them reduce theft and intrusion risks through proactive security solutions.
Our wireless intruder alarms detect threats instantly and are paired with 24/7 monitoring services to keep your property safe.
Professional Security System Installers
We are professional security alarm installers in UK. Our Grade 2 and Grade 3 systems meet police and insurance requirements while helping to reduce theft, vandalism, and unauthorised entry. These systems can be integrated with CCTV verification and coordinated on-site security response for enhanced protection.
24/7 UK Monitoring Centre
Our wireless intruder alarm system is backed by a 24/7 monitoring team that detects intrusions and initiates a rapid response to minimise potential damage. We can verify threats using an integrated camera and coordinate keyholding or police response when required.
Multi-Sensor Detection Technology
Fortify ES connects intruder alarms to a cloud-based monitoring platform to help protect multiple locations. Multiple sensors create a layered detection system that delivers comprehensive coverage against potential threats.
Integrated Security Platform
Our intruder alarm systems seamlessly integrate with CCTV for visual verification and access control to monitor unauthorised attempts. In an emergency, it enables coordinated response across locations through integrated system communication.
Advanced Threat Detection Components for Layered Protection
Our professional intruder alarm systems combine multiple technologies to deliver proactive protection.
Motion Sensors (PIR)
Passive infrared technology detects movement through heat signatures with dual-element sensors and anti-mask protection for comprehensive monitoring.
Best for: Internal rooms, corridors, after-hours areas
Key Features:
- Reliable detection technology
- Pet-Immune options available
- Anti-tamper functionality
Magnetic Sensors
Our intruder alarm installation also includes magnetic sensors that monitor entry points, such as doors and windows, and can be connected via wired or wireless links.
Best for: All access points, vulnerable windows, fire exits
Key Features:
- Perimeter defence layer
- Concealed installation options
- Battery backup operation
Glass-Break Detectors
Our advanced commercial intruder alarm system also includes acoustic sensors that detect breaking glass by analysing frequency across multiple panes.
Best for: Shop fronts, glazed areas, exposed windows
Key Features:
- Pre-entry detection
- Multi-pane coverage
- Frequency filtering technology
Control Panels (Grade 2 & 3)
Professional intruder alarm service with panel sensors, user codes, and monitoring communication through encrypted networks.
Best for: All commercial premises requiring compliance
Key Features:
- Zone management capability
- Expandable capacity
- Secure protocols
External Sirens and Strobes
High-decibel devices that provide threat alerts via audible warnings and visual indicators, with tamper protection.
Best for: External deterrence, neighbour notification
Key Features:
- Tamper-proof building
- Battery backup
- Weather resistance
Keypads and Remote Control
Our smart user interface enables arming through PIN codes, proximity tags, or smartphone apps with zone selection.
Best for: Multi-user environments, remote management
Key Features:
- Partial arming zones
- Smartphone integration
- User code management
Professional Monitoring & Response Coordination
Fortify ES is a leading intruder alarm company in the UK offering flexible monitoring response systems tailored to meet different risk levels.
Bells-Only System
The Bells-Only System provides acoustic alarm activation without a monitoring connection. It is ideal for budget-conscious premises that operate under local security supervision.
Keyholder Response
Our 24/7 monitoring centre alerts designated keyholders to immediate site attendance and investigation with the client to ensure a coordinated response.
Monitoring with Police Response (URN)
Full monitoring with police liaison for verified alarms at high-risk buildings or premises requires a Unique Reference Number (URN). This registration enables direct police response when alarm activations are confirmed.
Monitored with Guard Response
Security guards conduct an immediate professional investigation of the site to secure the area against further threats and preserve evidence.
Alarm Verification
Audio verification through listen-in microphones, video verification via integrated CCTV, and sequential sensor activation reduce false alarms while maintaining genuine threat detection.
Insurance Compliance & Alarm Grading Standards
Commercial intruder alarm systems are subject to important regulatory requirements, and we understand them all to offer insurance-approved or legally compliant threat protection solutions.
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Grade 2 Systems
Low to medium-risk premises protection against intruders with limited knowledge of the system. It is best for offices and retail stores. -
Grade 3 Systems
Medium to high-risk premises with enhanced detection and advanced anti-tamper, or premises storing high-value assets such as jewellery or precious metals. -
Professional Alarm System Installations
Our wired and wireless intruder alarm systems in the UK provide compliance with insurance policies and police URN eligibility. -
Insurance Approval:
Fortify ES understands insurer requirements, installs compliant systems, and provides the documentation necessary for insurance approval. -
Police URN Registration
A URN enables the police to verify alarm activations. It requires a compliant system and secure alarm records that cannot be tampered with or lost.
Seamless Intruder Alarm Integration for Complete Security
Smart commercial security systems require integration, and we offer smart intruder alarms that integrate seamlessly with your security ecosystem.
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CCTV Integration
Cameras automatically activate on alarm triggers and provide visual verification to avoid false alarms. -
Access Control Integration
Automatic arming when the last person exits with zone-specific arming, reducing user error. -
Fire Alarm Integration
Coordinated emergency response with automatic unlocking during fire events and unified monitoring. -
Building Management Integration
Energy-saving modes when unoccupied, with lighting activation during alarms for operational efficiency.
Industry-Specific Threat Protection for Everyone
Different industries face different risks, and we mitigate them with tailored commercial intruder alarm systems.
Retail & Leisure
Perimeter protection, zone-specific arming, and glass-break detection for after-hours stock security.
Construction Sites
Wireless intruder alarm systems in the UK are deployed for temporary sites with weatherproof sensors.
Educational Facilities
Zone-based arming with access control integration that meets safeguarding requirements.
High-End Residential Buildings
Discreet sensors, smart home integration, and pet-immune detection with smartphone control.
Agricultural Facilities
Wireless monitoring systems for remote agricultural locations.
Professional Intruder Alarm Installation & Maintenance
We offer reliable theft and intrusion protection with expert installation and ongoing intruder alarm servicing.
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Step 1: Free Site Survey & Risk Assessment
We start our intruder alarm services with a free comprehensive site survey and threat assessment. -
Step 2: System Design & Quotation
A custom alarm system is designed with grade-appropriate panels to meet insurance requirements. -
Step 3: Professional Installation
We provide professional installation with minimal disruption with maximum compliance. -
Step 4: User Training & Handover
We train your team on arming procedures, zone control, and monitoring activation. -
Step 5: Ongoing Maintenance & Support
We provide ongoing maintenance and support for intruder alarms, which includes annual servicing, battery replacement, and system health checks.
Trusted by Customers Across the UK
EXCELLENT Based on 8 reviews Posted on ConnorTrustindex verifies that the original source of the review is Google. Posted on MCN HeatingTrustindex verifies that the original source of the review is Google. We needed a security system due to a large theft. Fortify ES were outstanding. Clear, easy and immediate communication at all times including evening and weekend. Really good consistent service .. monitored system installed within days! Nice bunch of guys who took the time to explain options… the best professional service experienced in a long time. Highly recommend.Posted on MCN Plumbing&HeatingTrustindex verifies that the original source of the review is Google. Great company to deal with, emails and messages answered on weekends and evenings. James and his team did everything they could to ensure a speedy turn around from the point of order. Would highly recommend, nice to deal with professional people who know the importance of an efficient service.Posted on GeorgeTrustindex verifies that the original source of the review is Google. We have worked with Fortify since 2023 and they have supplied us with unwavering and outstanding maintenance and service support for industrial and commercial security contracts. Their commitment to quality, environment and professional working standards is impeccable. Reinvestment to procedures and working practices over the years has been exemplary. Value provided by Fortify directly and indirectly has been and continues to be a very good strategic procurement option. For me transparency and accountability is very important in developing strong and efficient working relationships. Fortify is a top tier supplier they align and continue to exceed our supply chain requirements in all aspects. I could write several thousand words on Fortify’s positive performance. Highly recommended.Posted on Jake JonesTrustindex verifies that the original source of the review is Google. Posted on Carl HunterTrustindex verifies that the original source of the review is Google. Great service, polite and honest. 👍Posted on declan mcanenayTrustindex verifies that the original source of the review is Google. Posted on Filip TatatovicTrustindex verifies that the original source of the review is Google. Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

John Doe
CEO of Whatever.
Get high-quality equipment that is completely customised to meet your needs. We’ll handle the inspections and certifications, so you have one less thing to worry about.

John Doe
CEO of Whatever.
Get high-quality equipment that is completely customised to meet your needs. We’ll handle the inspections and certifications, so you have one less thing to worry about.

John Doe
CEO of Whatever.
Get high-quality equipment that is completely customised to meet your needs. We’ll handle the inspections and certifications, so you have one less thing to worry about.

John Doe
CEO of Whatever.
Get high-quality equipment that is completely customised to meet your needs. We’ll handle the inspections and certifications, so you have one less thing to worry about.

John Doe
CEO of Whatever.
Get high-quality equipment that is completely customised to meet your needs. We’ll handle the inspections and certifications, so you have one less thing to worry about.
Frequently Asked Question
What alarm grade do I need for my business?
You can consider a Grade 2 intruder alarm system if the risk is low to medium, and a Grade 3 system if the risk level is medium to high, suitable for high-value assets.
Will this alarm system be accepted by my insurer?
Our intruder alarm systems are professional and comply with insurance policy requirements, providing complete peace of mind.
How do monitored alarms work?
Monitored alarm systems connect to alarm receiving centres. When an alert is triggered, verification protocols and coordinated response procedures are initiated.
Can I integrate the alarm with my CCTV system?
Our intruder alarm system seamlessly integrates with third-party applications and CCTV cameras for visual verification.
Can I control the alarm remotely via smartphone?
You can manage the alarm system, cancel false alarms, or initiate a response from anywhere using a smartphone, tablet, or laptop.
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Talk with specialists in intruder alarm installation and receive insurance-approved protection designed for your business.