Fee for Intervention (FFI) is HSE’s cost-recovery scheme. If an inspector decides you are in material breach of health and safety law during a Legionella visit, you pay for their time — charged at an hourly rate HSE sets in regulations and revises periodically, from the point the breach is identified through to the point the matter is concluded.
Most duty holders meet FFI weeks after the inspector has gone, as a line on an invoice rather than a moment in the room. The questions below are the ones people actually type into a search box once that envelope lands.
What is Fee for Intervention, and why am I being charged?
FFI lets HSE recover the cost of its regulatory work from the dutyholder responsible for a material breach, rather than the taxpayer footing the bill to put right a problem a business created. It was introduced under the Health and Safety (Fees) Regulations and runs alongside HSE’s other enforcement tools.
The principle cuts both ways. A routine inspection that finds you compliant should cost you nothing — there is no charge simply for being visited. The charge attaches to the breach, not to the knock at the door.
One nuance trips people up: FFI applies where HSE is your enforcing authority. Many offices, shops, restaurants and hotels are regulated by the local authority instead, and HSE’s FFI scheme does not run there — which is no shield from enforcement, as set out in Penalties for failing Legionella compliance in the UK.
What counts as a “material breach” on a Legionella inspection?
Material breach is HSE’s term, and it rests on the inspector’s professional judgement: a contravention of health and safety law serious enough that they have to tell you about it in writing. That written notification — frequently a Notification of Contravention — is what starts the clock.
In a Legionella context, the findings that have pushed inspectors to write formally tend to be the obvious gaps: no risk assessment at all, or one that was filed and never acted on; no written scheme of control describing how the system is kept safe; temperature or monitoring checks that either are not happening or cannot be evidenced; a clear uncontrolled risk such as a redundant calorifier, a stagnant dead leg feeding a care-home shower, or a cold tank running warm with no action logged [1][2].
Not every shortcoming is a material breach. A minor, easily corrected point may earn only verbal advice. The line between advice and a written notice is the inspector’s call on the day, which is why what you can put in front of them matters so much — see HSE improvement notices for Legionella explained.
How much is the FFI hourly rate?
The rate is set in regulations and revised from time to time, so any figure quoted on an old forum thread may already be out of date — check HSE’s current Fee for Intervention pages for the live hourly rate rather than a number you half-remember. More to the point, the headline rate is not the bill. The bill is hours multiplied by that rate, and the hours are where the variation lives.
What does the FFI invoice actually cover?
It covers the time HSE staff spend dealing with the breach: identifying it, writing it up, helping you understand what has to change, and any investigation or enforcement that follows, through to the point the matter is closed. A single clear breach resolved by one letter sits at the cheap end. A breach that pulls in a positive sample, return visits, witness accounts and a longer investigation sits at the expensive end. The driver is complexity and time, not a fixed tariff.
Does paying FFI mean I have been prosecuted or fined?
No. FFI is cost recovery, not a penalty. It is separate from prosecution, court fines and sentencing, and you can receive an invoice without ever seeing a courtroom. The underlying breach can still escalate on its own track, though — an improvement or prohibition notice, or in serious cases prosecution — and those carry consequences of their own. Enforcement action: when the HSE comes knocking walks through how a visit turns into formal action.
Can I dispute an FFI invoice?
Yes. There is a query-then-dispute route. You can first query an invoice informally — for instance, where the hours or the breakdown look wrong — and if that does not resolve it, you can formally dispute, with disputes considered through an independent process. Challenges usually turn on two questions: whether a material breach genuinely existed, and whether the time charged was reasonable for the work done.
Win or lose, the case rests on facts, so keep your own paper trail — dated monitoring records, your risk assessment and written scheme, photographs, and every email with the inspector. If you intend to dispute on the substance rather than the arithmetic, take advice before you do; a self-represented “I disagree” rarely shifts the outcome.
How do I avoid FFI on a Legionella inspection?
The cheapest FFI invoice is the one that never arrives, and heading it off is unglamorous. Hold a current, suitable and sufficient risk assessment. Keep a written scheme of control that names who does what. Make sure a competent responsible person is actually running it, and that your monitoring records prove the scheme is live rather than aspirational [1]. That evidence is exactly what an inspector goes looking for — HSE audits and inspections: what to expect for Legionella sets out the file they will ask to see.
This is general guidance, not legal advice on a particular invoice. Whether a finding is a material breach, and whether the hours charged are fair, turns on the facts of your site and the inspector’s judgement on the day — read it through a competent, site-specific risk assessment, and get proper legal advice before you formally dispute. Nothing here is medical or design advice.
Before your next inspection, run one test on your own file: can you put a current risk assessment, a written scheme of control and the last three months of monitoring records in front of an inspector within five minutes? If you cannot, that gap is precisely what turns a routine visit into a material breach — and an hourly bill. Close it today, starting with the records.
Sources
[1] HSE, “Legionnaires’ disease - what you must do”. https://www.hse.gov.uk/legionnaires/what-you-must-do/index.htm [2] HSE, “Legionnaires’ disease. The control of legionella bacteria in water systems - Approved Code of Practice and guidance (L8)”. https://www.hse.gov.uk/pubns/books/l8.htm