Intruder Alarm Systems
Commercial intruder detection systems designed, installed and maintained for business premises across London and the South East. We work with facilities managers, managing agents, main contractors and commercial property operators — with a risk-based approach, clear documentation and ongoing support to keep systems reliable and insurance-compliant.
Need assistance with your fire or security system?
Call our team on 020 3376 2672
What We Do
We design, install, modify and maintain commercial intruder alarm systems tailored to your premises and risk profile. Our approach balances effective detection with false alarm prevention — and we provide clear documentation throughout.
Design & Installation
- Site security surveys and risk-based design
- New intruder alarm installations (wired and wireless)
- System upgrades and zone expansions
Configuration & Programming
- Control panel programming and user code management
- Signalling path configuration (monitoring/keyholder)
- False alarm investigation and reduction measures
Maintenance & Repairs
- Annual maintenance, testing and certification
- Emergency callout and fault diagnosis
- Detector replacement and repositioning
Integration & Support
- Integration with access control and CCTV
- User training and handover documentation
- Compliance advice for insurance requirements
Typical Environments
We install and maintain intruder alarm systems across a wide range of commercial premises — each system designed around the specific risk profile and operational requirements of the site:
Who We Work With
Supporting the people responsible for security and risk management in commercial buildings
Facilities Managers
Ongoing servicing, system upgrades and false alarm resolution. Technical reviews, clear quotations and full documentation to support building management and insurance compliance reporting.
Managing Agents
Service takeovers, system upgrades and outstanding works for managed commercial property portfolios. Responsive delivery with clear reporting for landlords and leaseholders.
Main Contractors
Intruder alarm installation, commissioning and handover for new build and refurbishment projects. Programme coordination, practical completion support and full documentation for building control sign-off.
Commercial Property End Users
Direct support for owners and occupiers needing installation, servicing or upgrades. Site surveys, practical advice and fixed-price quotations tailored to building use and insurance requirements.
Compliance & Risk-Based Approach
There is no single legal requirement mandating intruder alarms for all commercial premises, but most businesses install them to satisfy insurance conditions, protect assets and meet broader security obligations. We design systems that are proportionate to your risk and straightforward to maintain.
British Standards & Industry Guidance
We design and install intruder alarm systems in line with recognized standards and industry best practices.
- BS 8243 – Installation and configuration of intruder alarm systems
- PD 6662 – Application of European Standards (required for police response)
- BS EN 50131 – Intrusion and hold-up alarm systems
- System grading based on risk assessment
Insurance & False Alarm Management
Most commercial insurance policies specify minimum security standards, often including intruder alarms installed and maintained to recognized standards.
- Annual servicing required by insurers
- False alarm reduction measures
- Monitoring and police response criteria
- Confirmed alarm policy compliance
Maintenance, Testing & Certification
Regular maintenance keeps your intruder alarm reliable, insurance-compliant and eligible for police response where applicable. We provide documented service records after every visit.
Detection Devices
- PIR and dual-tech detector tests
- Door and window contact checks
- Glass break detector verification
- Detector positioning review
- Cleaning and sensitivity adjustment
Control Panel & Signalling
- Zone circuit continuity tests
- Tamper circuit verification
- Signalling path test (if monitored)
- Communication module checks
- Event log review and analysis
Power & User Management
- Backup battery load test
- Mains supply and fuse checks
- User code audit and cleanup
- Entry/exit time verification
- User training refresher
Changing Provider or Inheriting a System?
If you've experienced persistent false alarms, unresolved faults, poor documentation or a lack of responsiveness from your current contractor, we can carry out a system assessment, bring records up to date and take over ongoing maintenance. We'll give you an honest picture of the system before agreeing a contract.
Common Issues We Fix
Intruder alarm faults can compromise security and trigger false alarms. We diagnose and resolve issues quickly to restore reliable protection.
How We Work
Site Survey
We assess your premises, identify vulnerable points and discuss your operational requirements, insurance obligations and any existing system issues.
Risk-Based Design
We propose detector types, zones and signalling appropriate to your risk profile, budget and insurance requirements — no over-specification.
Installation / Modification
Our engineers install or modify the system with minimal disruption to your operations, following BS standards and manufacturer guidance throughout.
Programming & Testing
We configure zones, user codes, entry/exit times and signalling paths, then conduct full system tests before handover.
User Training & Handover
We train your team on arming, disarming, code management and false alarm prevention — and provide clear documentation for your records.
Ongoing Maintenance
Annual service contracts covering detector tests, battery checks, signalling verification and defect remediation — with documented service records after every visit.
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Learn More →Commercial Intruder Alarm Specialists
New installations, system upgrades, maintenance takeovers and false alarm resolution — for facilities managers, managing agents and commercial property operators across London and the South East.
Service Area: London & South East (all London boroughs)