8th September 2026By Neil Skoglund
Compliance Guide
If your business stores or transports chilled or frozen food - or temperature-sensitive pharmaceuticals - a fridge failure overnight or a delivery van left running too warm isn't just a quality problem. It's a food safety incident, and under UK law you're required to be able to show what happened, when, and what you did about it.
This guide covers what UK temperature compliance actually requires, why manual spot-checks leave gaps that continuous monitoring closes, and what to look for in a monitoring solution. For a walkthrough of one specific tracker built for this job, see our RAK2270 cold chain sticker tracker guide. For the full sensor range and dashboard, see our temperature monitoring platform.
Temperature control sits at the centre of food safety for one simple reason: most foodborne pathogens multiply fastest in what food safety guidance calls the "danger zone" - roughly 8°C to 60°C. Keep chilled food cold enough and hot food hot enough, and you starve that growth. Let it drift for long enough, and you can't always tell from looking, smelling, or tasting that anything went wrong.
That's why temperature compliance is treated as a legal obligation rather than a best practice in the UK - and why the consequences of getting it wrong go well beyond a batch of spoiled stock. They include:
A single overnight excursion in a cold store or delivery vehicle can write off an entire batch of stock, with no warning until someone opens the door the next morning.
Undetected temperature abuse of ready-to-eat food or temperature-sensitive medicines is a direct public health risk, not just a commercial one.
Environmental Health Officers can issue improvement notices, downgrade your Food Hygiene Rating, or in serious cases refer a business for prosecution when required records aren't being kept.
If something does go wrong, complete records are your legal defence - proof you took "all reasonable precautions", a standard built into UK food safety law.
UK food temperature law sits across a few overlapping sources - EU law retained after Brexit, UK-wide statutory instruments, and FSA guidance that fills in the practical detail. The headline figures food businesses work to are:
| Requirement | Standard | Source |
|---|---|---|
| Chilled food (E, W, NI) | 8°C or below is the legal limit; FSA recommends running fridges at 5°C for a safety margin | Food Safety (Temperature Control) Regulations 1995 |
| Chilled food (Scotland) | Risk-based "no risk to health" standard rather than a fixed figure - 8°C/5°C used as the practical benchmark | Food Hygiene (Scotland) Regulations 2006 |
| Frozen food | -18°C or below | FSA guidance |
| Documented safety management | A food safety management system based on HACCP principles is required for every food business | Article 5, Regulation (EC) No. 852/2004 |
There's also a general allowance to have chilled food out of temperature control for up to 4 hours (for display or service) before it must be discarded, and the food's own temperature is what's legally relevant - not just the air temperature around it. None of this is exhaustive legal advice; if you're unsure how the rules apply to your specific operation, check current Food Standards Agency guidance or speak to your local authority's Environmental Health team.
For most small and medium food businesses, the FSA's Safer Food Better Business (SFBB) pack is the practical way HACCP principles get applied - it isn't mandatory itself, but it's built to satisfy the same Article 5 obligation. Whatever format you use, an inspector expects to see the same underlying elements:
Chilling, freezing, cooking, and reheating are the classic critical control points where temperature is what stands between safe and unsafe food.
A defined check - fridge and freezer temperatures at least twice a day is the standard SFBB pattern - against a stated limit (8°C, -18°C, or whatever applies).
A record of each check with the date and time, the equipment or product measured, the reading, who took it, and any corrective action - a "prove it" diary, spreadsheet, or sensor log.
What you actually did when a fridge ran warm - moved stock, called an engineer, discarded product - recorded alongside the reading that triggered it.
Regulation (EC) No. 852/2004 requires records "commensurate with the nature and size" of the business - the FSA leaves exact retention to you, based on shelf life, though many food safety consultants suggest keeping diaries for at least 12 months.
A twice-daily paper diary satisfies the letter of the SFBB pattern, but it only ever captures two moments in a 24-hour period. Anything that happens between checks - a door left ajar overnight, a compressor failure over a weekend, a delivery van's fridge unit cutting out on a motorway - goes unrecorded until someone happens to notice.
| Manual spot-checks | Continuous IoT monitoring | |
|---|---|---|
| Coverage | 2-3 readings/day, whenever staff remember | Reading every few minutes, 24/7, unattended |
| Out-of-hours gaps | Overnight, weekend, and holiday failures often go unnoticed until the next check | Alerts fire the moment a threshold is breached, any time of day |
| Record integrity | Paper or spreadsheet entries can be missed, backfilled, or disputed | Timestamped, tamper-resistant sensor data |
| Staff time | Manual rounds every day, every site, every unit | Set thresholds once; review by exception |
| In-transit visibility | Effectively none once the vehicle leaves the depot | Live temperature data throughout the journey |
Continuous monitoring doesn't remove every manual check your food safety management system calls for - core-temperature "prove it" checks on cooked food, for instance, are still done with a probe - but for storage and transport it closes the exact gap where most undetected temperature abuse happens.
Thresholds you set per unit, with alerts by email, SMS, or push notification to the right person - not just a dashboard nobody's watching at 2am.
Historical data kept for as long as your business needs it - matched to product shelf life and your own due diligence policy, not a vendor's default.
Reports an Environmental Health Officer or customer auditor can be handed directly - readings, timestamps, and any alerts raised, without manual transcription.
Graphs that show a fridge slowly drifting warmer over weeks - catching a failing compressor before it becomes an incident, not just after a breach.
Sensors and connectivity that keep reporting once goods leave the depot, so cold chain visibility doesn't stop at the loading bay.
Data that slots alongside your SFBB diary or food safety management system, rather than replacing it with something your team has to relearn.
Trackpac's temperature monitoring platform pairs LoRaWAN temperature sensors with a dashboard built for exactly this: continuous readings, configurable alert thresholds, historical data you can review by exception, and reports you can hand straight to an inspector or auditor. Sensors run for months to years on battery power with no SIM card or per-message fees, so you can cover every cold store, walk-in, and display fridge without a growing connectivity bill.
For goods that move rather than sit still - pallets, totes, and deliveries that need to stay within range in transit as well as in storage - see our cold chain monitoring guide covering the RAK2270 sticker tracker, a low-cost, adhesive device built specifically for pallet- and package-level cold chain tracking.
Platform costs start from £15/device/year with no per-message fees. See our pricing page for full plan details, or talk to our LoRaWAN consultancy team about deploying sensors across cold storage, warehouses, and delivery routes.
Continuous monitoring of chillers, freezers, and cold rooms with alerts the moment a unit drifts out of range.
Cover multiple sites and units from one dashboard, with data shared across your team by organisation.
In England, Wales and Northern Ireland, the Food Safety (Temperature Control) Regulations 1995 set a legal limit of 8°C or below for food that could support the growth of harmful bacteria. The Food Standards Agency recommends running fridges at 5°C or below so that food stays within the 8°C limit even with door openings and loading. Scotland's equivalent regulations use a risk-based "no risk to health" standard rather than a fixed number, but 8°C (with 5°C as a working margin) is the practical benchmark food businesses use across the UK. Frozen food should be held at -18°C or below.
Yes. Article 5 of retained Regulation (EC) No. 852/2004 requires every food business to have a documented food safety management system based on HACCP principles. You don't have to call it "HACCP" or use a specific format - the Food Standards Agency's Safer Food Better Business (SFBB) pack is a simplified, non-mandatory toolkit built to help smaller caterers and retailers meet this requirement - but some form of hazard analysis, monitoring, and record-keeping around critical points like chilling and cooking is legally required.
The FSA doesn't set one fixed retention period - it's for each business to decide, based on the shelf life of the food and the nature of the operation, per Regulation (EC) No. 852/2004's requirement to keep records "commensurate with the nature and size" of the business. Many food safety consultants recommend keeping completed diaries and sensor logs for at least 12 months as evidence of due diligence for EHO inspections and Food Hygiene Rating assessments - longer if a product has an extended shelf life or you supply into a sector with stricter contractual requirements.
Continuous IoT monitoring replaces routine fridge/freezer spot-checks and gives you a far more complete record than a diary filled in twice a day, but it doesn't replace every SFBB check - things like probe ("prove it") checks on core food temperature during cooking and reheating are still done manually. Most food businesses run automated ambient monitoring for storage and transport alongside the manual checks their food safety management system already requires for cooking and handling steps.
Gaps or inconsistencies in monitoring records are one of the most common findings in food hygiene inspections, and they undermine your ability to demonstrate due diligence - even if no food was actually affected. Depending on severity this can affect your Food Hygiene Rating, trigger a revisit, or in serious cases lead to improvement notices or prosecution. Continuous, timestamped sensor data is harder to fake or forget than a paper diary, which is why it's increasingly used as supporting evidence alongside - not instead of - a documented food safety management system.
Trackpac's temperature monitoring platform starts from £15/device/year with no per-message fees, on top of the cost of a LoRaWAN temperature sensor. For a specific quote covering your number of sites, sensors, and users, see our pricing page or talk to our LoRaWAN consultancy team.
Ready to close the gaps in your temperature records? Explore Trackpac's temperature monitoring platform or see our pricing to get started.
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