Emergency communication and mass notification systems

An emergency communication system gets one clear instruction to everyone on a premises at once, through spoken announcements, screens, desktops and phones, and records who received it. Strive AV designs and integrates these systems for UK venues, offices, campuses, hospitals and hospitality premises, building on the PA, signage and IT estate the site already has.

Typical cost: £2,000 to £8,000 to add mass notification and messaging to existing systems on one site, £30 to £150 per site per month for the alerting platform, and voice alarm installations priced at survey.

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What an emergency communication system includes

Six parts, most of which a premises already owns in some form. The design work is deciding what is missing, what needs to be certified, and how the trigger reaches every channel at once.

ComponentRoleWhat we specify
Trigger points and controlWhere an authorised person starts and stops an alertControl room desk, fixed call points, staff alert buttons, app with two-step confirm, security system inputs
Message libraryPre-approved spoken and on-screen messages for each procedureEvacuation, invacuation, lockdown, all-clear and site-specific variants, recorded in plain English and other languages where needed
PA and voice alarmSpoken instruction in every occupied zonePriority routing, zone selection, live microphone override; voice alarm elements certified by a life-safety contractor
Digital signage overrideVisual instruction on every screenCMS priority message or hardware trigger, reaches reception, corridors, meeting rooms and event screens
Desktop, mobile and SMSReaches people away from speakers and screensMass notification gateway with acknowledgement and reporting, priced per site per month
IntegrationsLets the building reactAccess control, CCTV, building management, visitor management and the fire alarm interface

PA systems and voice alarm (PA/VA): what each one is for

A public address system handles day-to-day announcements, paging and background music across zones, and is part of the commercial audio systems Strive AV designs and installs. A voice alarm system is a life-safety installation: it is designed and certified to BS 5839-8 using EN 54 equipment, with monitored speaker circuits, battery-backed amplifiers, a fire panel interface and priority message routing, and it is tested and maintained like the fire alarm it works with. BS EN 50849 covers sound systems used for emergency purposes beyond fire, which is the territory Martyn's Law procedures sit in.

Strive AV designs the emergency messaging, the PA and the integration between them. Where a project needs a certified voice alarm, the life-safety elements are delivered and certified with a specialist fire and voice alarm contractor as part of the same programme, so one design covers everyday audio, emergency messages and the certification trail.

Lockdown, invacuation and staff alerts

Evacuation messages are usually already covered by the fire alarm. The gap on most premises is the other procedures: a spoken invacuation instruction, a distinct lockdown alert, a staff-only pre-alert before anything is said to the public, and an all-clear. Those messages need a trigger authority, a message library and channels that reach people who are nowhere near a speaker.

We cover the lockdown and staff alert layer in detail on our lockdown alert systems page, including triggers, channels and the lockdown versus invacuation versus evacuation comparison, and the visual channel on our digital signage page.

Where emergency communication systems are installed

Venues, hotels and conference centres

Public-area voice alarm and signage, staff channel for front-of-house, event-day testing, integration with the events signage network.

Offices and headquarters

Desktop and Teams alerts, reception and meeting room screens, access control lockdown, multi-tenant trigger agreements with the landlord.

Schools, colleges and universities

Classroom-level audio, distinct lockdown tone, staff app, campus-wide mobile alerting for universities with dispersed estates.

Hospitals and public sector

Zoned messaging that respects clinical areas, control room integration, resilience and battery backup, procedures for shared sites.

Emergency communication and Martyn's Law

The Terrorism (Protection of Premises) Act 2025 asks standard tier premises (200 to 799 people) for procedures covering evacuation, invacuation, lockdown and communication, and enhanced tier premises (800 or more) for a documented public protection plan. Commencement is expected in spring 2027 and both tiers must notify the SIA. The Act does not name a product, a standard or an approved supplier; it asks for what is reasonably practicable.

In practice, the communication procedure is only as good as the system that carries it. Our Martyn's Law compliance services map the four procedures to the systems a premises has, and the free assessment shows which tier applies.

Our Partner

Strive AV & Masscoms

Masscoms is Strive AV's specialist partner for Martyn's Law compliance. Their Martyn's Law-ready emergency response system pairs with our public address, digital signage and occupancy analytics so your venue's protective duty is covered end to end.

Combined response and visitor-communication coverage, deployed and supported by a single integration team.

Visit Masscoms

Emergency communication FAQs

Q.What is an emergency communication system?

An emergency communication system is the set of channels and controls that let a premises tell everyone on site what is happening and what to do, fast and consistently: PA or voice alarm announcements, digital signage override, desktop pop-ups, mobile push and SMS, and the trigger points and message library behind them. A mass notification system is the software layer that sends one message to all of those channels at once.

Q.What is the difference between a PA system and a voice alarm system?

A PA (public address) system is for everyday announcements and background music and has no life-safety rating. A voice alarm (PA/VA) system is designed, installed and certified for emergency use under BS 5839-8 with EN 54 equipment: monitored speaker lines, battery backup, priority message routing and a fire-panel interface. Many premises run both, with the voice alarm carrying emergency messages and the PA everything else.

Q.Does Martyn's Law require a voice alarm or mass notification system?

No specific product is required. The Terrorism (Protection of Premises) Act 2025 asks premises to have procedures for evacuation, invacuation, lockdown and communication that are reasonably practicable for the site. For most premises above 200 people that means a reliable way to deliver spoken instructions and visual messages everywhere people gather, which is what these systems provide. See our Martyn's Law compliance services.

Q.How much does an emergency communication system cost?

Adding mass notification and messaging to existing PA, signage and IT on one site typically costs £2,000 to £8,000, with subscriptions of £30 to £150 per site per month. A new or replacement voice alarm installation is priced at survey because speaker counts, cabling, battery backup and certification scope decide it. Multi-site platforms start at £15,000.

Q.Can an emergency message reach people who are not at a screen or speaker?

Yes. Mass notification gateways push the same message to mobiles by app, SMS and email and to managed laptops as a full-screen pop-up with acknowledgement, which covers staff in back-of-house areas, on break or off site, and gives the incident lead a record of who has seen it.

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