Summer in the United Kingdom means outdoor dining, street food markets, festivals, and garden barbecues. It also means higher ambient temperatures, longer holding times, and greater challenges for food safety. Foodborne illness cases spike during the warmer months, with campylobacter, salmonella, and E. coli O157 all thriving when food is mishandled in the heat. This guide covers everything you need to know to serve food safely at outdoor events.
Why Outdoor Food Service Is Higher Risk
When you move food preparation and service outdoors, you lose many of the controls that a permanent kitchen provides. Ambient temperatures above 8°C accelerate bacterial growth, and the danger zone between 8°C and 63°C becomes much harder to manage without commercial refrigeration. Access to running water may be limited, cross-contamination risks increase when working on temporary surfaces, and staff who are not accustomed to outdoor catering may overlook basic controls.
Under Regulation (EC) No 852/2004, the same legal obligations apply whether you are cooking in a permanent kitchen or serving from a marquee in a field. The regulation makes no distinction — food business operators must ensure food safety at all times.
Cold Chain Management in Warm Weather
Maintaining the cold chain is your single most important control at any outdoor event. High-risk chilled foods must be kept at or below 8°C at all times — and ideally at 5°C or below. Here are practical steps to achieve this:
- Use insulated cool boxes with frozen ice packs for transporting chilled foods. Pre-chill the cool box before loading.
- Bring a calibrated probe thermometer and check food temperatures on arrival and at regular intervals.
- Keep cool boxes in the shade and out of direct sunlight. Position them away from BBQs and other heat sources.
- Open cool boxes as infrequently as possible. Designate one box for items you need first and another for later use.
- For large events, invest in or hire portable commercial refrigeration units with temperature displays.
Cooking and Reheating BBQ Food Safely
Barbecued food is the most common source of summer food poisoning in the UK. The combination of charred exteriors and undercooked interiors is a recipe for illness. Follow these rules:
- Cook burgers, sausages, and poultry until the core temperature reaches 75°C. Use a probe thermometer — do not rely on visual cues alone.
- Allow charcoal BBQs to reach white-hot coals before cooking. Flames mean the heat is uneven and food will char on the outside while remaining raw inside.
- Keep raw meat and poultry completely separate from ready-to-eat foods. Use different utensils, plates, and chopping boards.
- If reheating pre-cooked food (such as pulled pork or chilli), ensure it reaches 75°C throughout and serve it immediately.
- Whole muscle cuts of beef and lamb (such as steaks) can be served rare provided the outer surfaces are fully seared — but minced and reformed products must always be cooked through.
Hand Hygiene Without a Kitchen Sink
Hand hygiene is frequently compromised at outdoor events because running water is scarce. Environmental Health Officers expect to see adequate handwashing facilities at any food stall or temporary event. At a minimum, provide:
- A portable handwash station with warm running water, antibacterial soap, and disposable paper towels.
- Hand sanitiser as an additional measure — but never as a substitute for proper handwashing.
- Disposable gloves for handling ready-to-eat food, changed frequently between tasks.
Allergen Management at Events
Allergen management is just as important outdoors as it is in a restaurant. Under UK law, you must provide allergen information to consumers — even at temporary events. Ensure that:
- All dishes are clearly labelled with the 14 major allergens they contain. Our quick reference guide to the 14 allergens is a useful resource to keep on hand.
- Staff can answer customer questions about allergens and know where to find the full ingredient information.
- Cross-contamination risks from shared cooking surfaces, oils, and utensils are managed and communicated to customers.
Temporary Event Notices and Licensing
If you are selling food at a one-off event, you may need a Temporary Event Notice (TEN) in addition to your food business registration. A TEN covers the sale of alcohol and late-night refreshment at events lasting up to 168 hours. You must give your local licensing authority at least ten working days’ notice (or five working days for a late TEN). Even if you do not need a TEN, you should inform your local environmental health team that you will be trading at an event so they can provide guidance.
Emergency Preparedness
Things can go wrong at outdoor events — power failures, refrigeration breakdowns, extreme weather, and customer illness. Have a plan in place:
- Know the location of the nearest first aid point and have a basic first aid kit at your stall.
- Carry spare ice packs and a backup plan for keeping food cold if refrigeration fails.
- Have a procedure for disposing of food that has been in the danger zone for more than two hours.
- Keep contact details for your local environmental health team and our emergency food safety support line readily available.
Pre-Event Checklist
Use this checklist before every outdoor food event to ensure you have everything covered:
- Food business registration is up to date
- Temporary Event Notice submitted (if required)
- Calibrated probe thermometer packed
- Sufficient cool boxes and ice packs prepared
- Portable handwash station with soap and paper towels
- Allergen information displayed and staff briefed
- Separate utensils for raw and ready-to-eat food
- Waste disposal plan in place
- Emergency contacts list prepared
Proper preparation is the key to safe outdoor food service. If you need help training your team for event catering, our food safety training programmes can be tailored to your specific needs. You can also take our free risk assessment to identify areas where your food safety practices could be strengthened.
Frequently Asked Questions
Do I need a food hygiene rating to sell food at a festival?
You need to be registered as a food business with your local authority. Many event organisers will require you to have a food hygiene rating of 3 or above. Even if the event does not require it, customers increasingly check ratings before purchasing.
How long can chilled food be kept out of the fridge at an event?
As a general rule, high-risk chilled food should not be out of temperature control for more than four hours in total (including preparation, transport, and display). If ambient temperatures are very high, reduce this time further. Any food that has been in the danger zone for more than two hours should be used immediately or discarded.
Can I use hand sanitiser instead of handwashing at an outdoor event?
No. Hand sanitiser is not a substitute for proper handwashing with warm water and soap. Environmental Health Officers expect to see a handwash facility at every food stall. Sanitiser can be used as an additional step but should never replace washing.
Written by Carren Amoli, BSc (Hons), RSPH Registered
