G4S: a £1.8 million legionella fine where nobody fell ill
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Key points
- £1.8 million fine plus £34,000 costs for G4S Cash Solutions (UK) Limited in 2016 — one of the largest legionella fines on record.
- No legionella was ever confirmed on site and nobody fell ill. The entire case rested on management failings at a Harlow cash depot.
- Environmental health officers found erratic monitoring, untrained staff and no adequate risk assessment.
- The prosecution was brought by Harlow Council, not the HSE — a reminder that local authorities enforce in offices, warehouses and similar premises.
- Charges: HSWA 1974 sections 2(1) and 3(1), in the East of England.
G4S Cash Solutions (UK) Limited was fined £1.8 million in 2016 for legionella management failures at a cash depot in Harlow — a site where legionella was never confirmed and nobody became ill. The prosecution was brought not by the HSE but by Harlow Council, and it remains one of the largest legionella fines ever imposed in the UK.
If one case in our enforcement tracker destroys the idea that prosecution needs an outbreak, it is this one.
What happened
Environmental health officers from Harlow Council carried out an inspection at a G4S cash-handling depot in the town. A cash depot is, in legionella terms, an ordinary workplace: hot and cold water systems, washrooms, nothing exotic. There was no outbreak, no cluster of illness, no positive sample driving the visit.
What the officers found was a site where the water systems were simply not being managed. Temperature monitoring was erratic — done sometimes, not others, with no consistency that could evidence control. The staff who should have been carrying out and overseeing the checks were untrained. And there was no adequate legionella risk assessment for the water system at all.
Harlow Council prosecuted under sections 2(1) and 3(1) of the Health and Safety at Work etc. Act 1974. In 2016 the company was fined £1.8 million with £34,000 costs. The figure reflected the company’s very large turnover under the sentencing guideline — the same failings at a small firm would have drawn a smaller number, but the same conviction.
The failings the inspectors found
Three failures, all routine, all cheap to fix, all left unfixed:
- Erratic monitoring. Temperature checks are the basic control for hot and cold water systems, as set out in HSG274. Done irregularly they control nothing and prove nothing. The temperature checker shows the thresholds those readings are measured against.
- Untrained staff. ACOP L8 requires the people appointed to control the risk to be competent. Assigning monitoring to staff with no training is a failure that recurs across the enforcement record, including care settings where the job was left to untrained caretaking staff.
- No adequate risk assessment. The assessment is the document everything else hangs off. Without it there is no identified risk, no written scheme, and no defensible reason for the monitoring regime being whatever it was.
The fine and costs
| Fine | £1,800,000 |
|---|---|
| Costs | £34,000 |
| Charge | Health and Safety at Work etc. Act 1974, sections 2(1) and 3(1) |
| Prosecutor | Harlow Council (local authority) |
| Illness or death | None — legionella not confirmed on site; workers exposed to risk |
Two features make this case a landmark. First, the outcome row: no illness, no confirmed bacteria, £1.8 million. Second, the prosecutor: a district council, exercising exactly the same HSWA powers the HSE holds, in the kind of premises local authorities enforce.
The lesson for duty holders
For offices, depots, warehouses and other ordinary workplace premises, the case carries four lessons:
- “Low-risk premises” does not mean no duty. A simple water system still needs an assessment, a monitoring regime and records. The simplicity shrinks the work, not the obligation.
- Local authorities enforce too. If your premises fall outside HSE’s usual sectors, your inspector is the council’s environmental health team, and they prosecute under the same Act to the same standard.
- Monitoring has to be a regime, not a habit. Set the schedule, assign it to a trained person, and record every reading. Erratic logs read as no regime at all.
- Turnover scales the fine. Under the sentencing guideline, large organisations pay large multiples for the same failings a small business would commit. The G4S number is what “no assessment and erratic checks” costs at national-company turnover.
Free legionella risk assessment template
A structured Word document following the five-step approach in ACOP L8. Covers risk identification, written scheme, monitoring, and records. If it isn't written down, you can't evidence it.
Follows ACoP L8 and HSG274 Part 2. Free. No spam.
No outbreak. No confirmed bacteria. No illness. £1.8 million. The G4S case is the standing answer to anyone who says they will deal with legionella when there is a problem — the unmanaged risk was the problem, and it was priced like one.
The baseline for premises like these is a legionella risk assessment, a named responsible person, and a monitoring schedule that actually runs. The risk assessment builder is an indicative starting point for structuring that assessment; it records and organises what you find, and it never certifies a system as safe.
Source: H&V News report on the G4S fine. Figures are recorded as published in our legionella enforcement tracker dataset; check the linked source before relying on any figure.
Free legionella risk assessment template
A structured Word document following the five-step approach in ACOP L8. Covers risk identification, written scheme, monitoring, and records. If it isn't written down, you can't evidence it.
Follows ACoP L8 and HSG274 Part 2. Free. No spam.
Frequently asked questions
Why was G4S fined £1.8 million for legionella?
Environmental health officers from Harlow Council inspecting a G4S cash depot found erratic water-temperature monitoring, untrained staff and no adequate legionella risk assessment. Legionella was never confirmed on site and nobody fell ill, but workers had been exposed to the risk. G4S Cash Solutions (UK) Limited was fined £1.8 million plus £34,000 costs in 2016, one of the largest legionella fines on record, prosecuted by a local authority rather than the HSE.
Can you be fined for legionella if no bacteria are found?
Yes. The offence under the Health and Safety at Work etc. Act 1974 is exposing people to the risk, and the risk exists whenever a water system is unmanaged, whether or not a sample has ever cultured the bacteria. In the G4S case legionella was not confirmed at the depot at all; the £1.8 million fine was for the management failures themselves. A clean sample is no defence if there is no risk assessment, no monitoring and no training behind it.
Do local authorities prosecute legionella cases, or only the HSE?
Both can. The HSE enforces in higher-risk workplaces such as factories, hospitals and care settings, while local authority environmental health officers enforce in lower-risk premises such as offices, shops, hotels and warehouses. The G4S prosecution, one of the largest legionella fines ever imposed, was brought by Harlow Council. In Scotland, prosecutions are brought by the Crown Office and Procurator Fiscal Service following an HSE or local authority investigation.
What does erratic temperature monitoring mean for legionella compliance?
Monitoring that happens irregularly, or with gaps that nobody can explain, fails twice: it does not keep the system under control, and it cannot evidence that control to an inspector. HSG274 expects cold water below 20°C and hot water at 50°C or above at outlets (55°C in healthcare), checked on a set schedule. Erratic records tell an inspector there is no functioning written scheme behind them, which is how a monitoring problem becomes a management prosecution.
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