Legal fridge temperatures for UK restaurants: chart by food type, checking frequency, tolerances and corrective actions. A practical 2026 guide.
Your fridge temperature is the most frequent, the simplest and the most closely scrutinised check in the entire HACCP approach in a restaurant. It is also the one where a mistake costs the most: stock in the bin, food poisoning cases, improvement notices after an inspection - and a bruised Food Hygiene Rating on the door.
This guide brings together everything a food-service professional needs to know: the legal temperature limits versus best-practice targets, how often to record checks, what tolerance you actually have when a reading is out of range, and what to do when a unit drifts.
At BackResto, more than 2,000 food-service professionals log their temperature checks every day. This guide draws on that field experience - and on what Environmental Health Officers actually ask to see.
In the UK, chilled storage requirements come from the Food Safety and Hygiene (England) Regulations 2013 (with equivalent regulations in Wales and Northern Ireland), sitting on top of retained Regulation (EC) 852/2004 and the due-diligence framework of the Food Safety Act 1990. The headline rule is simple: food that needs refrigeration to stay safe must be kept at 8°C or below. That is the legal ceiling - the Food Standards Agency (FSA) recommends running colder in practice.
| Food / situation | Legal requirement (England) | Best-practice target |
|---|---|---|
| Chilled perishable food (meat, dairy, cooked items) | 8°C or below | 5°C or below |
| Fridge air temperature setting | - | 1 to 4°C, so food stays at 5°C or below |
| Fresh fish and shellfish | 8°C or below | On melting ice, 0 to 2°C |
| Minced meat and poultry | 8°C or below | 4°C or below - highest-risk items, coldest spot |
| Prepared salads, sandwiches, desserts | 8°C or below | 5°C or below |
| Defrosted food | 8°C or below | Use within 24 hours; never refreeze |
| Frozen food and ice cream | −18°C | No rise above −15°C, even briefly |
| Hot holding | 63°C or above | Probe the core every service |
| Cooling cooked food | As quickly as possible | Within 90 minutes, then refrigerate |
| Reheating | Steaming hot throughout | Core of 70°C or above (82°C in Scotland) |
Note the logic of the two columns: 8°C is the law, 5°C is the standard. Running your fridges at 5°C or below gives you a safety margin for door openings, defrost cycles and hot days - and it is the figure the FSA's Safer Food, Better Business (SFBB) pack tells caterers to aim for. Scotland's regulations are worded differently (food must be kept refrigerated), but the same targets apply in practice.
Three reference points for the team:
Between these two thresholds, pathogenic bacteria (Salmonella, Listeria, Staphylococcus aureus) multiply - and the closer to 37°C, the faster they grow. The entire logic of the cold chain is to keep food out of this zone for as little time as possible: that is the foundation of the HACCP method, and the reason your food safety management system treats chilled storage as a critical control point.
The regulations require you to monitor your critical control points and to hold records you can produce during an inspection - that is the heart of the due-diligence defence under the Food Safety Act 1990. In practice, the standard an EHO expects to see:
Every check must be dated, initialled and kept - the SFBB diary works on paper, but it is exactly the kind of repetitive task that gets skipped on a slammed Friday night. A digital temperature log timestamps everything automatically, and a connected sensor records continuously, alerts included.
This is the question everyone asks, and the regulatory answer is nuanced but useful. In England, the law includes specific flexibilities:
The golden rule: what is not written down does not exist. A drift that was detected, assessed and corrected in writing is evidence of control - the same drift with no record is a non-compliance, and it costs points on your hygiene rating.
Before you call the refrigeration engineer, check in this order:
During a food hygiene inspection, temperatures are examined systematically - and the findings feed directly into your Food Hygiene Rating Scheme score, the 0-to-5 "scores on the doors" figure your customers can look up before they book:
These requirements are the backbone of your food safety management plan: the pairing of "monitoring + evidence" is exactly what HACCP calls a controlled critical point - and exactly what earns a 5 on the door. To see where your business stands, our free HACCP audit gives you a diagnosis in 5 minutes.
The legal maximum for chilled food in England, Wales and Northern Ireland is 8°C. Best practice - and what the FSA recommends - is to keep food at 5°C or below, which usually means setting the fridge air temperature between 1 and 4°C. Scotland's rules are worded differently but the practical standard is identical.
Effectively, yes. Regulation (EC) 852/2004 (retained in UK law) requires you to monitor your critical control points, and the due-diligence defence under the Food Safety Act 1990 only works if you can prove you took all reasonable precautions. In concrete terms: if your fridges are perfect on inspection day but you have no records, you still have a problem.
No single statutory retention period exists. The FSA's Safer Food, Better Business pack works on a rolling diary, and most professionals keep records for at least 3 to 6 months - many keep a full year to cover a complete trading cycle. With digital records, the question disappears.
For daily monitoring of your units, yes - as long as it is reliable and checked regularly. For goods-in checks and for cooling, you need a probe thermometer to read the core of the food. Connected sensors combine both jobs: continuous air-temperature monitoring plus an immediate alert the moment a unit drifts.
−18°C for all frozen food and ice cream. A brief rise to −15°C during a defrost cycle or a short door opening is tolerable, but food that has thawed - even partially - must never be refrozen.
Tired of paper temperature logs? With BackResto, your temperature records are digital, timestamped and ready for any inspection - and connected sensors alert you before the stock is lost. Start your free 14-day trial - no commitment, no card required.