A fire alarm panel is only as good as its last service log. We test, service and replace fire detection and alarm systems on a fixed schedule, across every category and sector — so every zone stays live, and no certificate ever lapses.
Every weekly test, periodic service and device replacement is carried out and certified against the specific standard your system category is held to.
Design, installation, commissioning and servicing of fire detection and alarm systems in buildings other than dwellings.
Grade and category requirements (Grade A-D1, LD/HD systems) for houses, flats and HMOs.
The legal duty on employers and building owners to maintain a working, regularly serviced fire detection system.
Enhanced checks on communal detection, panel logs and flat entrance devices in taller residential blocks.
The product standard every panel, detector, sounder and call point on a compliant system must meet.
Fire alarm cabling, containment and fire-rated cable requirements for new circuits and zone extensions.
BS 5839-1 sets a category for every system based on what it's designed to protect and how much of the building it covers. We service to whichever category your fire risk assessment specifies.
Manual only — call points, no automatic detection
Detection to satisfy a specific, localised fire risk
Detection in escape routes only
L4 plus rooms opening onto escape routes
L3 plus specified areas of higher risk
Full coverage — every room and void in the building
Detection in specified areas of property risk
Full coverage for property protection
The right category and device mix depends entirely on how the building is occupied — we scope to the sector and the fire risk assessment, not a generic minimum.
Interlinked mains detectors, no panel required
Interlinked required, mains or long-life battery powered
Panel-based system, category depends on size and layout
Communal detection panel plus individual flat devices
Category set by occupancy and fire risk assessment
Higher category given fire load and evacuation time
Category tailored to occupancy numbers and building layout
Highest category — vulnerable, often non-ambulant occupants
Sleeping-risk category throughout guest areas
Full panel coverage across shared and private rooms
Panels and detection devices have a working life of 10-15 years. Pick the level of cover that matches how much of that lifecycle you want us to manage.
Weekly call point test and panel log, exactly as BS 5839-1 requires between services.
Periodic servicing plus minor faults, batteries and false alarm issues fixed on the spot.
Testing, servicing and panel/device replacement at end-of-life built in — never budget for it separately again.
Scoped to your system category, zone count and site count.
A representative sample of recent work. Full case studies and references available on request.
Grade D1 interlinked system test at tenancy renewal, one detector replaced after failing sensitivity check.
Replaced ageing interlinked detectors with a fully panelled Grade A system ahead of licence renewal.
Routine service of a Category L2 detection system across three floors, weekly call point log reviewed.
Category L1/P1 system service across racking and loading bay zones, beam detectors realigned.
Full-site call point and detector test across classrooms, hall and kitchen ahead of a new term.
Full panel service and battery-backup test across a 40-bed residential care facility.
Category L1 service across 28 guest rooms and communal areas, false alarm rate reviewed and reduced.
Communal panel test plus individual flat entrance device checks, post-2022 regs.
Full block test ahead of the academic year, Category L2 panel system across all rooms and corridors.
Representative examples — site names withheld for client confidentiality. Ask for references relevant to your sector.
Accredited fire alarm engineers across London and the South East, with every test and service logged to your compliance record and panel log book wherever your properties are.
Care packages above are cheaper over time — but every service is also available as a one-off, fixed price upfront.
| Service | Standard | From |
|---|---|---|
| Testing | ||
| Weekly call point test (per visit) | BS 5839-1 | £35 |
| Domestic interlinked system test | BS 5839-6 | £45 |
| HMO panel system test | BS 5839-6 | £85 |
| Servicing | ||
| 6-monthly system service (up to 20 devices) | BS 5839-1 | £165 |
| Quarterly commercial service contract (per visit) | BS 5839-1 | £195 |
| Detector clean & sensitivity check (per unit) | — | £18 |
| Backup battery replacement (per panel) | — | £45 |
| Replacement | ||
| Single detector or call point replacement | EN 54 | £40 |
| Sounder / beacon replacement | EN 54 | £55 |
| Domestic interlinked system replacement (up to 5 units) | BS 5839-6 | £220 |
| Panel replacement (2-4 zone) | BS 5839-1 | £850 |
| Category upgrade / zone expansion | BS 5839-1 | Custom quote |
Domestic and single-property jobs — book a live slot instantly. HMO, commercial and portfolio work — send an enquiry and we'll come back with a fixed quote.
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We reply within one working day. For anything urgent, call 0203 908 4790.
BS 5839-1 calls for weekly call point testing by the responsible person, plus a periodic service by a competent engineer at least every 6 months. Our Maintenance and Full Lifecycle plans build both into a single schedule.
Most panels and detection devices have a working life of 10-15 years, after which components degrade and spares become harder to source. Our Full Lifecycle Plan builds this replacement into the monthly fee so it's never a surprise cost.
L categories are designed around life protection — detecting fire early enough for people to escape. P categories are designed around property protection, prioritising early detection to limit damage. Many buildings run a combined L/P category.
Not always — a Grade D1 interlinked detector system without a panel is sufficient for most single-let homes under BS 5839-6. HMOs and higher-risk properties typically require a Grade A panel system.