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Operations2 April 2026 · 4 min read · Updated 27 September 2026

Lone working in security: what good practice actually looks like

A large share of contracted guarding is, by its nature, one person on a site with nobody else around — overnight static posts especially. Lone working is not something to eliminate from the model; it is central to it. What varies enormously between contractors is whether there is an actual plan for what happens if that officer needs help.

The general duty, and the sector reality

Employers have a general duty under health and safety law to assess and manage the risks of lone working, and the current HSE guidance is the place to check what that duty involves for your operation specifically. It is a generic duty applied to a sector where lone working is close to the default, which is exactly why it needs deliberate attention rather than being assumed to be covered by general policy.

What a lone working plan actually needs to cover

  • A defined check-in schedule, so an officer who misses one is noticed within a known window, not whenever someone happens to call
  • A clear escalation path if a check-in is missed — who is contacted, and in what order
  • A means of raising an alarm that does not depend on the officer being able to use a phone normally
  • Site-specific risk factors identified in advance — isolation, access, known local issues — rather than assessed only after something happens
  • A record of who is on a lone-working post on any given night, so an escalation actually knows where to start

The last point sounds basic, but it depends on the same information a rostering decision needs — see cover at 5am for how that information tends to live in the wrong place under time pressure. A lone-working plan is only as good as knowing, in real time, who is actually lone working tonight.

Where plans usually fail in practice

Not from the absence of a policy document — most contractors have one. They fail because the check-in schedule is not actually followed under pressure, because a device relied on for alarm-raising was not checked before the shift, or because the escalation contact list is out of date and the first call goes nowhere.

A policy that exists on paper and a plan that would actually function at 3am on an isolated site are not automatically the same thing, and it is worth testing which one you actually have.

The check-in that stopped happening

Lone working arrangements degrade quietly. A check-in regime is introduced, works for a few months, and then attenuates: missed check-ins stop being chased because they are usually nothing, the monitoring person changes, and eventually the process exists on paper while nobody is actually watching.

The test is not whether a procedure exists but what happened the last time a check-in was missed. If nobody can recall, or the answer is that it was noticed the following morning, the arrangement is documentation rather than protection.

Escalation nobody has rehearsed

The other recurring gap is an escalation path that has never been tested. Who is called, in what order, after how long, and what they are authorised to do. Working that out during a genuine failure to respond is the worst possible time, and it is when most organisations first discover the procedure names someone who left.

Common mistakes

  • A check-in regime nobody is actively monitoring
  • Missed check-ins not chased because they are usually nothing
  • Escalation paths naming people who have left
  • No agreed timeframe before escalation begins
  • Arrangements documented but never tested
  • No record of check-ins, so a gap cannot be identified afterwards

One practical test: ask what happened to the last missed check-in

Find the most recent missed check-in and ask what actually happened: how long before anybody noticed, who acted, and what was recorded.

If nobody can recall, or the answer is that it was picked up the following morning, the arrangement exists on paper and is not being monitored. That is the commonest state for lone-working controls, because missed check-ins are almost always nothing and the discipline erodes accordingly.

  • Monitor actively rather than relying on a documented procedure
  • Chase every missed check-in, however routine they usually are
  • Verify escalation contacts periodically — people leave
  • Agree how long before escalation begins
  • Record check-ins so a gap can be identified afterwards
Key takeaways
  • Lone working is close to the default in contracted guarding, not an edge case to design around
  • Check current HSE guidance on the general duty to assess and manage lone working risk
  • A plan needs a check-in schedule, an escalation path and a way to raise an alarm that does not depend on a normal phone call
  • Knowing who is lone working tonight, in real time, is what makes escalation possible
  • Test whether the plan would actually function under pressure, not just whether the document exists

About this article

The SecureOptix team

Written by people who work daily with security contractors on SIA licensing, screening and the records that hold up under an inspection.

Published
2 April 2026
Last revised
27 September 2026

How this is researched, dated and corrected is set out in our editorial standards. If something here is wrong or out of date, email hello@secureoptix.co.uk — corrections to a regulated detail are made as soon as we can confirm them, and the revision date above moves when they are.