What Alarm Communication does

Alarm Communication Limited (ACL), founded in 1984 by Ron Napper and headquartered in Frimley, Surrey, is a UK specialist installer and maintainer of integrated building safety systems for commercial properties. The company's portfolio spans three core service lines — Fire & Life Safety Systems (addressable fire detection, emergency lighting, passive fire protection), Security Systems (CCTV, access control, intruder alarms), and Building Energy Management Systems (BEMS) — supported by 24/7 monitoring and, more recently, fire safety training courses. ACL serves six verticals: hospitality, healthcare, education, stadia, commercial, and heritage, with named accounts including Imperial College Healthcare NHS Trust (five hospitals since 2009), Dukes London, the Berkeley Hotel, St Mary's University, and The Wing. The company is vendor-agnostic, working with Advanced, Gent, Hochiki, Honeywell, Texecom, LuxIntelligent, and Cortech (Gold Technical Partner), and integrates systems via the Cortech platform into unified operator interfaces.

ACL operates a B2B enterprise field-sales model with bespoke site surveys, multi-year contracts (typically five years with auto-renewal), and dedicated account management. Revenue is generated through four streams: one-time Installation Charges (50% on order, 50% on completion), recurring Annual Maintenance Charges, recurring Annual Monitoring Charges, and usage-based Additional Charges (call-outs, parts, travel). Pricing is quote-based and escalates annually by RPI, with response SLAs ranging from 4-hour priority to next-working-day standard. As of June 2021, ACL is a wholly-owned subsidiary of Marlowe plc and operates within the Marlowe Fire & Security Group alongside eight other brands; founder Ron Napper retired upon completion of the sale.

Name

Alarm Communication

Legal name

Alarm Communications Limited T/A ACL & Griffin Fire

Website

https://acl.uk.com

Company type

Private

Founded year

1984

Operating status

Operating

Headcount range

11–50 employees

Short description

Alarm Communication Limited (ACL) is a UK specialist in commercial fire detection, security systems, and building energy management, serving hospitality, healthcare, education, stadia, commercial, and heritage clients through design, installation, 24/7 monitoring, and long-term maintenance contracts; it operates as a Marlowe plc subsidiary.

Ownership category

akta.pro rank

Product category

Commercial Fire and Security Systems Services

NAICS

Security Systems Services (56162), Security Systems Services (except Locksmiths) (561621)

SIC

Services-Management Services (8741)

akta.pro primary industry

Commercial & Industrial Alarm Monitoring (BPAKAFAB)

akta.pro secondary industries

Fire Alarm Monitoring Services (HSAHAAAI), System Monitoring & Dispatch Services (Fire/CO Alarm Monitoring) (HSAHAFAF)

Keywords

• Commercial fire alarm systems
• Security systems integration
• Access control installation
• Building energy management
• Emergency lighting systems

Headquarters

HQ city

Frimley

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Infrastructure

Revenue model

1. Installation Charges: One-time project-based charges for supply, installation, integration, commissioning, and testing of fire protection, security, and BEMS equipment. Installation Charge is typically split 50% on order and 50% on completion.
2. Annual Maintenance Charge: Recurring annual fees for ongoing maintenance, servicing, inspection, fault diagnosis, repairs, and technical support services. Charged annually in advance.
3. Annual Monitoring Charge: Recurring annual fees for 24/7 monitoring services including emergency help desk and rapid response engineering attendance.
4. Additional Charges: Chargeable services including emergency call-outs, remote interventions, travel, parts replacement (excluded parts), false alarm responses, abortive visits, administration fees, and civil works.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Alarm Communication Limited (ACL) is a UK specialist contractor that designs, installs, integrates, commissions, monitors, and maintains commercial fire detection, emergency lighting, security (CCTV, access control, intruder alarms), passive fire protection, and Building Energy Management Systems for enterprise clients. Service is delivered on multi-year maintenance contracts supported by 24/7 monitoring, rapid-response engineering, and fire safety training across hospitality, healthcare, education, stadia, commercial, and heritage sectors.

Product overview

Alarm Communication (ACL) offers a comprehensive suite of building safety and security products organized around three core service areas: Fire & Life Safety Systems, Security Systems, and Building Energy Management Systems (BEMS). Their fire offerings include conventional and addressable fire alarm systems using Advanced MxPro panels, emergency lighting via the LuxIntelligent platform, and passive fire protection. Security products encompass CCTV systems from major manufacturers (Avigilon, Axis, Bosch, Hikvision), access control solutions (Paxton, Salto, Plan, Assa Abloy), and intruder alarms using Texecom Ricochet wireless technology. BEMS services focus on Honeywell HVAC control systems. These products are delivered through a full lifecycle approach covering consultation, installation, maintenance, and assessment, supported by 24/7 monitoring services and fire safety training courses.

Differentiator

Problem solved

Functional benefit

Products and services

• Fire & Life Safety Systems Industry-leading fire detection and life safety systems installed and maintained to EN54 standards, including addressable and conventional fire alarm systems with intelligent detection. Designed for enterprise clients across hospitality, healthcare, education, stadia, commercial, and heritage sectors.
• Security Systems Comprehensive security systems including CCTV, access control, and intruder alarms with bespoke design, installation, and 24/7 monitoring capabilities. Protects property, people, and physical assets of commercial clients across multiple sectors.
• Building Energy Management Systems (BEMS) User-friendly BEMS solutions including Honeywell Heating, Ventilation and Air-conditioning control systems designed to optimize building environmental performance and energy efficiency. Installed and maintained across commercial, healthcare, and large enterprise estates.
• Monitoring Solutions 24/7 monitoring services for fire and security systems with emergency help desk, priority response, and rapid engineering attendance delivered through annual recurring monitoring contracts.
• Passive Fire Protection Fire door installation and passive fire protection services (FIRAS-certified) designed to reduce the spread of fire and smoke between building sections. Offered as a complementary service alongside active fire detection systems.
• Fire Safety Training Courses Practical fire safety training including Fire Warden Training, Fire Marshal Training, and Fire Extinguisher Training to help employers meet legal fire safety responsibilities. Delivered to commercial clients across sectors.
• Access Control Systems Access control installations ranging from single door entry systems to IP-based systems controlling thousands of doors, sourced from leading manufacturers including Plan, Salto, Paxton, Assa Abloy, and ACT. Maintained by SSAIB-accredited multi-skilled engineers.
• CCTV Systems Industry-leading CCTV solutions for capturing, recording, viewing, managing, and analyzing video across both analogue and IP systems, with components sourced from Avigilon, Axxonsoft, Axis, Bosch, Hikvision, Dahua, Secure Logic, and BCD for unrivalled image quality.

Quantifiable outcome

• Response time within 1 hour of fault being logged for St Mary's University maintenance contract
• +2 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration19 records

Feature6 records

Partnerships

Nine partnerships are on record, tiered core and supporting.

• Cortech DevelopmentscoreTechnology or Integration · 1 January 2021ACL is Gold members of Cortech's Technical Partner Programme, recognizing ACL as one of a select group of specialists able to install, commission and provide support on Cortech's Systems. The partnership spans 10 years since 2010, sharing common philosophy around modularity and simplification. ACL uses Cortech's platform to build tailored software packages integrating previously separate systems into unified user experiences.
• Brentford Football ClubcoreGTM or Marketing Partner · 1 January 2021ACL secured a 2-year partnership with Brentford FC, their first venture into football. The partnership includes work with the Club's Community Sports Trust to enrich lives and better the wider community. ACL gains visibility in the stadia sector while supporting the Bees' community initiatives. Adam Ward, Partnerships Manager at Brentford FC, noted ACL's portfolio of prestigious London properties and expertise.
• Skills for SecuritycoreStrategic or Co-development PartnerACL works closely with Skills for Security, their apprenticeship scheme provider, to deliver full 3-year Fire and Security apprenticeships. The scheme has been running for over 25 years, enrolling 15+ apprentices currently. Skills for Security provides classroom sessions and assessments while ACL provides on-site practical training.
• AdvancedcoreTechnology or IntegrationACL partnered with Advanced to specify and install MxPro fire panels and LuxIntelligent emergency lighting systems. Advanced's MxPro is described as the industry's unbeatable multi-protocol fire panel with almost two decades of market leadership. ACL installed 200 Advanced LED-Lite luminaires at the Berkeley Hotel.
• LuxIntelligentcoreTechnology or IntegrationACL specified and installed LuxIntelligent emergency lighting test systems monitored and controlled by dedicated panels connected to building fire systems. LuxIntelligent ensures BS5266-1 compliance and can be remotely managed via web and iOS apps through LuxIntelligent Cloud.
• HoneywellcoreTechnology or IntegrationACL works with Honeywell for Building Energy Management Systems, specifically maintaining Honeywell Heating, Ventilation and Air-conditioning control systems on client sites including major central London hospitals.
• TexecomcoreTechnology or IntegrationACL uses Texecom Ricochet wireless security systems for intruder alarm installations. The Ricochet technology enables expanders on each floor with strong signal strength for immediate response. ACL specified this system for The Wing's nearly entirely wireless installation.
• Plan, Salto, Paxton, Assa Abloy, ACTsupportingTechnology or IntegrationACL works with leading access control suppliers and manufacturers including Plan, Salto, Paxton, Assa Abloy and ACT to deliver tailored access control solutions from single door entry to IP-based systems controlling thousands of doors.
• Avigilon, Axxonsoft, Axis, Bosch, Hikvision, Dahua, Secure Logic, BCDsupportingTechnology or IntegrationACL sources CCTV products and components from leading manufacturers including Avigilon, Axxonsoft, Axis, Bosch, Hikvision, Dahua, Secure Logic and BCD for analogue or IP systems with unrivalled image quality.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Securitas UK: Securitas provides manned guarding, electronic security, and fire & security systems services across the UK, including through the acquired ADT commercial business. Overlaps with ACL on commercial security system installation and monitoring at national scale.
• Chubb Fire & Security (UK): Chubb is a large UK and global incumbent offering commercial fire detection, suppression, intruder, CCTV, and access control installation and monitoring. It competes with ACL for enterprise and multi-site contracts across the same verticals.
• Mitie Security (Mitie Group): Mitie's security and fire division is a UK broad incumbent in commercial fire, security, and facilities services. It is a direct sister brand within Marlowe-adjacent UK fire & security competitive set, offering overlapping installation, monitoring, and maintenance at greater scale.
• Honeywell Building Technologies (UK): Honeywell is both a major supplier to ACL (BEMS) and a global incumbent offering its own integrated building management, fire, and security solutions. It competes with ACL for large enterprise integrated building contracts, particularly where Honeywell BEMS is the incumbent.
• ADT UK (now part of Securitas): ADT is a major UK commercial and residential security and fire systems provider offering installation, monitoring, and maintenance — directly comparable to ACL's fire alarm, intruder, and CCTV offering for commercial customers.
• Johnson Controls (UK Building Technologies): Johnson Controls provides integrated building technologies including fire detection, HVAC/BEMS, and security systems. It competes with ACL in the same integrated fire + BEMS + security niche, particularly for large enterprise and healthcare accounts.

Direct peers

• Wintech Fire & Security: Wintech is a UK-based fire and security systems installer and maintainer serving commercial, education, and public sector clients. It is a close direct peer to ACL in scale, vertical mix, and B2B enterprise field-sales model.
• TIS (Total Integrated Solutions): TIS is a UK fire, security, and building systems integrator serving commercial, healthcare, and public sector clients. Closely comparable to ACL in integrated fire + security + BEMS delivery and multi-site contract management.
• CSL Group: CSL Group is a UK provider of dual-path signalling and managed connectivity for fire and security systems. It is an ecosystem peer supplying alarm signalling and monitoring infrastructure to UK installers including ACL and competing end-to-end service providers.
• Reliance High-Tech: Reliance High-Tech is a UK specialist in integrated security, fire, and surveillance systems for critical infrastructure, utilities, and commercial clients. Comparable to ACL in multi-vendor integration and managed service model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/acl-alarm-communication-ltd-

Compliance20 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Alarm Communication