Keeping Your Fire & Security Systems Reliable, Compliant & Always Protected
At Sigma Fire & Security Ltd, we understand that installing a fire or security system is only the first step. Keeping it fully operational, compliant, and reliable requires regular maintenance, expert monitoring, and proactive support. That’s why we offer comprehensive service contracts, 24/7 monitoring solutions, and professional system takeovers — all tailored to your building and operational needs.
Get in touch24/7 Monitoring Services
Our alarm and fire monitoring centre operates 24 hours a day, 365 days a year. We monitor all major types of systems, including:
- Fire alarm systems
- Intruder alarms
- CCTV and video surveillance
- Access control systems
If an alarm is triggered, our control room immediately notifies your designated keyholders and, where necessary, the emergency services — ensuring immediate action and reducing potential damage or loss.
Benefits of monitored systems:
- Rapid response to fire, break-in, or equipment failure
- Continuous protection — even when your premises are unoccupied
- Peace of mind knowing trained professionals are watching over your property
- Potential reductions in insurance premiums
Our monitoring services comply with the latest BS EN 50518 and BS 5979 standards, offering secure, reliable, and fully accredited protection.
System Takeovers & Upgrades
If your current fire or security provider isn’t meeting expectations — or if your system has become outdated — Sigma Fire & Security can help.
We take over existing systems, whether installed by another provider or inherited from a previous tenant, and bring them up to full working condition.
You’ll benefit from improved reliability, reduced downtime, and a more transparent service relationship — with no hidden fees or long-term lock-ins.
Make enquiryOur takeover process includes:
- Comprehensive system audit – We assess the condition, performance, and compliance of your current setup.
- System optimisation – Our engineers repair, reconfigure, or upgrade as required.
- Ongoing support – Once the system meets our standards, we provide ongoing maintenance and optional monitoring.
Service Contracts You Can Rely On
Our service and maintenance contracts ensure your fire and security systems perform exactly as they should — every day of the year. Whether you operate a small office or a large commercial site, we deliver scheduled inspections, preventative maintenance, and rapid fault response to keep you compliant with British Standards and insurance requirements.
What’s included:
- Routine maintenance visits (annual, biannual, or quarterly)
- Full system health checks and component testing
- Software and firmware updates where applicable
- Replacement of worn or faulty parts
- Detailed service reports and compliance documentation
- Priority engineer call-outs for contract customers
With a Sigma service contract, you minimise downtime, extend system lifespan, and ensure you’re always prepared for audits or inspections.
The Process
Simple → Effective → Secure
Free site survey
We visit your London property, assess layout, risk areas and required level of monitoring.
Tailored design & quote
We propose the right system, integration options, monitoring levels and pricing.
Professional installation
Our engineers install with minimal disruption, test thoroughly and hand over full instructions.
Maintenance & monitoring
Ongoing servicing and optional 24/7 monitoring ensure your system remains reliable and compliant.
Contact Form
Contact Details
Ready to secure your London or Kent property with best-in-class fire & security protection? Contact Sigma Fire & Security today for a no-obligation site survey.
FAQs
What is included in a fire and security service contract?
A service contract from Sigma Fire & Security Ltd covers the ongoing care, maintenance, and performance assurance of your fire and security systems. It ensures your systems remain compliant with British Standards and operate reliably year-round.
Our service contracts typically include:
- Scheduled maintenance visits (annually, biannually, or quarterly)
- Full system inspection and testing
- Preventative maintenance and fault rectification
- Software and firmware updates
- Replacement of faulty components
- Detailed service reports for audit and compliance records
- Priority response for contract customers
This proactive approach minimises system downtime, ensures regulatory compliance, and extends the lifespan of your equipment — giving you peace of mind that your premises are always protected.
Why do I need a maintenance contract for my fire alarm or security system?
All fire alarm and security systems require regular maintenance to remain effective, safe, and compliant with insurance and legal standards. Over time, sensors, detectors, and electronic components can degrade or drift out of calibration.
With a professional maintenance contract, you:
- Stay compliant with BS 5839 (for fire alarms) and BS EN 50131 (for intruder alarms)
- Reduce false alarms and costly call-outs
- Prevent breakdowns before they occur
- Maintain your insurance validity
- Ensure your system responds correctly in an emergency
Without a service contract, even a small unnoticed fault could leave your building vulnerable — or non-compliant with fire and safety regulations. Sigma Fire & Security takes that risk off your shoulders with a comprehensive service plan.
What does 24/7 monitoring mean, and how does it work?
24/7 monitoring means your alarm systems are connected to a professional monitoring centre, where trained operators watch over your property day and night.
When an alarm activates — whether fire, intruder, or CCTV motion detection — the signal is instantly transmitted to our ARC (Alarm Receiving Centre). Operators immediately verify the event and contact your nominated keyholders or emergency services, depending on the situation.
This provides protection even when you’re not on-site — ensuring rapid response to fire, break-ins, or technical faults. Monitoring also supports remote diagnostics, reducing the need for unnecessary engineer visits.
Sigma Fire & Security’s monitoring services comply with BS EN 50518 and BS 5979, offering accredited, secure, and reliable protection.
Can Sigma take over my existing fire or security system?
Yes, absolutely. Sigma Fire & Security Ltd specialises in system takeovers — whether your current provider isn’t meeting expectations, or your existing system has been neglected or inherited.
Our takeover process involves:
- Free system audit – We assess the equipment, configuration, and compliance.
- Repair or upgrade – Our engineers replace or optimise components as needed.
- Recommissioning & certification – We test all elements to ensure compliance.
- Ongoing support – You can then choose one of our tailored service or monitoring contracts.
We can take over systems installed by most major manufacturers, giving you improved reliability, transparent pricing, and the confidence of a trusted local provider.
How often should my fire or security system be serviced?
The recommended frequency of maintenance depends on the system type, usage, and risk profile of your premises.
Typical guidelines:
- Fire alarm systems: At least two service visits per year, as per BS 5839.
- Intruder alarms: At least one maintenance visit per year (twice for police-response systems).
- CCTV & Access Control: Typically annual servicing with interim checks as required.
Regular servicing ensures early fault detection, maintains compliance with insurers and regulators, and verifies that all devices are working as intended. Sigma Fire & Security can design a bespoke service schedule to match your business’s needs.
What happens if my system triggers a false alarm during monitoring?
If a false alarm occurs, our monitoring centre immediately investigates the cause. We use data from the system to determine whether the activation is genuine or accidental.
If it’s confirmed as a false alarm (e.g. dust in a detector or an accidental trigger), the operator will contact your keyholders instead of dispatching emergency services — helping you avoid false alarm penalties and unnecessary disruption.
Our engineers can then review your system remotely or attend site to address the root cause, whether that’s a faulty detector, sensor misalignment, or environmental interference.
By combining expert monitoring with regular maintenance, Sigma Fire & Security drastically reduces the risk of false alarms while maintaining fast, reliable response times.
What are the benefits of switching my maintenance and monitoring provider to Sigma Fire & Security?
Switching to Sigma Fire & Security Ltd means gaining a responsive, accredited, and transparent partner dedicated to your safety and compliance.
Key benefits include:
- Free system audit and performance review
- Flexible contracts — no long-term tie-ins
- Fast engineer response times and clear communication
- Integrated fire and security expertise under one roof
- 24/7 support and nationwide coverage from our Kent-based hub
We take pride in offering a personal service, with a dedicated account manager and engineers who know your system inside out — something many large providers can’t match.
Do you provide remote monitoring and reporting options?
Yes — our modern systems support remote monitoring, diagnostics, and reporting through secure cloud-based platforms.
With these solutions, you can:
- View alarm history, system status, and reports online
- Receive instant notifications of system events via email or app
- Remotely arm/disarm systems or grant temporary access
- Reduce downtime with remote fault diagnosis and resets
This level of visibility is ideal for facilities managers, multi-site operators, and compliance officers who need accurate, real-time system data. Sigma Fire & Security ensures all remote services are fully encrypted and compliant with the latest cyber security standards.
Accreditations
We’re accredited by the UK’s leading certification bodies — SSAIB and BAFE — and proud members of the Fire Industry Association (FIA), the UK’s largest fire protection trade body. This gives you complete confidence that our work meets the highest standards for safety, compliance, and professionalism.
