Three options, one decision
Every lone-worker protection scheme in the UK is built from three ingredients in some combination: a smartphone app, a dedicated device, and a monitored response — at its most formal, an alarm receiving centre operating under BS 8484. Vendors tend to sell whichever ingredient they make. Your risk assessment, not the brochure, should decide the mix.
The question to hold onto throughout: when this worker is face-down at 6:45am, what actually happens? Every option below is really an answer to that question at a different price point — and the honest comparison is about failure modes, not feature lists.
Phone apps: cheap to deploy, honest about their limits
Apps win on cost and speed. There is no hardware to buy, lose or charge separately; deployment is an install link; updates ship over the air; and staff carry the phone anyway. For moderate-risk roles — community visits, inspections, property viewings — a well-configured app with check-ins, man-down detection and GPS is often entirely proportionate.
Be honest about the failure modes. Battery: a phone running maps, email and calls all shift can die exactly when the shift overruns — the moment risk peaks. Signal: an app is only as good as coverage in the places people actually work, and rural rounds, basements and plant rooms are precisely where lone working happens; check whether the app queues alerts and forwards them when signal returns. Activation: a phone in a pocket or at the bottom of a bag cannot be triggered discreetly mid-confrontation the way a physical button can, and its motion sensors read falls less reliably from a bag than from the body.
Dedicated devices: built for one job
A dedicated device — fob, pendant, ID-badge holder or rugged handset — does one thing, so it does it well. A physical SOS button can be found by feel, without looking, during an assault. Fall and no-motion detection are more dependable because the unit is worn where its sensors can actually read the body. Battery life is measured in days, not hours, because it isn't also running email. Many carry their own SIM, so a worker's personal phone problems don't become a safety gap.
The costs are equally concrete: hardware spend per head, a charging and replacement regime, and the daily discipline of carrying a second item. An uncharged pendant in a glovebox protects no one — device fleets need managing, and the roles that justify them are the higher-risk ones: security, forestry, waste, utilities, night work and anywhere confrontation or a hard fall is a realistic scenario rather than a theoretical one.
BS 8484: what the standard covers and when it's required
BS 8484 is the British Standard for lone worker device services, and its key insight is that it certifies the whole chain, not a gadget: the app or device, the supplier's processes, and the alarm receiving centre — staffed 24/7 and certified to the relevant ARC standard — that answers the alert and follows agreed escalation procedures. Crucially, an alarm verified through a BS 8484-compliant service qualifies for a graded police response via a unique reference number, meaning a confirmed attack is treated as a priority incident rather than a routine 999 call.
When is it required? Rarely by statute — but frequently by contract and underwriting. NHS trusts, local authorities, housing associations and large facilities-management frameworks routinely specify BS 8484 in tenders; insurers may ask about it for high-risk roles and can look hard at its absence after an incident. The working rule: if your people face deliberate violence, work where a fall means hours undiscovered, or your clients' contracts mention the standard, budget for certified ARC monitoring. If your risk profile is moderate and your internal escalation genuinely operates around the clock, a self-monitored scheme can be defensible — provided the risk assessment says so in writing.
Matching the mix to the risk — and where Vygard fits
Most real workforces need a blend: apps for the moderate-risk majority, devices for the hard cases, and monitored response where contracts or the risk level demand it. The mistake is buying one tier for everyone — over-speccing wastes budget on hardware that sits in drawers, under-speccing leaves your highest-risk people with a dead phone and an unwatched inbox.
Vygard is built for that blended reality: the app provides check-ins, man-down detection, discreet SOS and GPS; the escalation engine turns every missed check-in or alarm into a time-boxed, named-responder sequence rather than a hope; and the audit trail records what fired, who responded and when — which is what an assessor, commissioner or insurer actually asks to see. Whichever mix your assessment lands on, the response path and the evidence should live in one system.
Frequently asked questions
- Is a lone worker app enough on its own?
- For moderate-risk roles with decent signal and a genuinely watched escalation path, often yes — proportionate is the legal test. It stops being enough where violence is a realistic risk, coverage is poor, or a contract specifies BS 8484 monitoring. Let the risk assessment, not the budget, make that call.
- Do UK employers legally need BS 8484-certified monitoring?
- No law names BS 8484, but the duty to control lone-working risk is legal, and the standard is the recognised benchmark. Public-sector tenders and framework contracts frequently require it, insurers may expect it for high-risk roles, and it is the route to a graded police response for verified alarms.
- Can one platform cover apps, devices and monitored response?
- Yes, and it should. Apps for lower-risk staff and devices for higher-risk roles can feed the same escalation process and audit trail, with ARC monitoring layered on where required. One system means managers see a single picture and the evidence trail is complete regardless of which hardware raised the alarm.
Last updated 2026-07-24