Back to top
Menu
Food labelling
Expert reviewer, Mr Paul McArdle, Registered Dietitian
Next review due April 2023
Food labels tell you useful things such as the amount of salt, fat and added sugars the product contains and how many calories it has. Knowing what to look for on a nutrition label can help you to make healthier food choices. Here’s a guide to some of the key things to look out for.
Food labelling and the law
Food labels must be clear and easy to read. The information on them is strictly governed by European law. Food labelling laws mean that food manufacturers and retailers are legally obliged to put the following information on their labels.
- A list of ingredients, starting off with the one that the product contains the most of.
- The weight or volume of the product.
- The name of the food – including a description for brand names.
- Storage instructions telling you the best way to keep the food so it doesn’t go off.
- A use-by date or best-before date. Use-by dates show you how long you can safely keep the food if you store it according to the instructions on the label. Stick to the use-by date so your food is safe to eat and you don’t get food poisoning. The best-before date is about the quality of the food, not safety. After this date, the food may lose some flavour or texture so it’s no longer at its best, but it’s unlikely to make you ill.
- Clear instructions on how to prepare and cook the food if necessary.
- The manufacturer's name and address so you can find out more about the product.
- The place of origin so you can clearly see where the food has come from. It could be misleading not to show this – for example, a Greek-style yoghurt made in France.
- Any genetically modified (GM) ingredients. This doesn't apply to meat, milk or eggs that come from animals that have been fed with GM products.
- The alcohol strength if a drink contains more than 1.2% alcohol.
- Nutrition information if nutritional claims are made. See our section: Nutrition and health claims for further details.
How healthy are you? With our health assessments you get an action plan that’s tailormade for you. Find out more about health assessments >
How healthy are you?Safety information
Food labels must also list any key information that could affect the safety of the food. This includes:
- if the food contains an ingredient that some people are allergic or intolerant to (this law applies to a list of known allergens) – see our section: Allergy labelling
- if the food contains ingredients that may be harmful to some people (such as lots of caffeine)
- the lot or batch number to identify batches of food if they have to be recalled (a date mark is sometimes used instead)
Nutritional information
Most pre-packed foods in the UK must show nutritional information on their label. If manufacturers want to make a health or nutrition claim, they have to follow certain rules – see our section: Nutrition and health claims.
How do I read a food label?
Nutritional information labels show how much energy – in kilojoules (kJ) and kilocalories (kcal) – the product contains. They also list the amount – in grams – of things like:
- fat
- saturated fat
- carbohydrates
- sugars
- protein
- salt
This information is given per 100g or 100ml of the product. It may also be shown per portion. Some labels also show the amount of:
- fibre
- certain vitamins and minerals
- specific types of fat – monounsaturated and polyunsaturated
The nutritional information is usually in the form of a table on the label on the back of the food. It can be really useful to help you shop more healthily and compare some of the products you usually buy. This may help you to control your portion sizes.
You may find some nutritional information on the front of the food packaging, so you can see straight away whether or not the product is healthy. In the UK, the labels use the traffic light system to show this information clearly.
Traffic light system
The traffic light food labelling system helps you see whether a food or drink is healthy just by glancing at the colours on the label. The colours are:
- green = low amount in the food
- amber = medium amount in the food
- red = high amount in the food
The idea is to choose more foods with green colours on the label and fewer foods with red colours on the label.
- If there are mainly green colours on the label, this shows you that the food is likely to be a healthy one.
- If there are lots of red colours on the label, the food is likely to be unhealthy. This doesn’t mean you shouldn’t eat this food at all, but you shouldn’t eat lots of it.
- Amber colours mean the food isn’t very high or very low in certain nutrients and you can eat it most of the time.
The traffic light system shows you how much energy, fat, saturated fat (saturates), sugar and salt is in the food. It shows how many grams of each of these nutrients are in one serving. The label also shows how much of your reference intake (RI) each portion provides, as a percentage. The RI is usually the value for an average adult female (unless it's a food for children).
Fat-free claims
Fats are an essential part of your diet. But eating too much fat or too much of certain types of fat can be unhealthy.
If a product is described as fat free, it has to contain no more than 0.5g of fat per 100g or 100ml of the product.
Low-fat, light or lite claims
A solid food claiming to be low fat, light or lite can't contain more than 3g of fat per 100g. A liquid food making this claim can’t contain more than 1.5g of fat per 100ml.
Saturated fats are considered to be less healthy than unsaturated fats. If you eat too much saturated fat, this may increase the amount of cholesterol in your blood. High cholesterol increases your risk of heart disease. Eating too many trans fats may also increase your risk of heart disease.
If a product claims to contain reduced saturated fat, this gives you an idea about how much saturated fat and trans fats it contains. To be described as having reduced saturated fat, a product must contain at least 30 per cent less than the full-fat version. And the amount of trans fats in the product must be equal to or less than the trans fats in the full-fat version.
Low-sugar claims
Having some sugar in your diet, especially from natural sources such as fruit and vegetables, is generally good for you. But consuming high-sugar processed foods or drinks regularly can mean you put weight on and can also be bad for your teeth. Some research suggests that having too much sugar in the form of sugary drinks is associated with increasing the risk of having type 2 diabetes.
Low-sugar foods can’t contain more than 5g of sugars per 100g (if solid) or 2.5g of sugars per 100ml (if liquid).
No added sugar claims
A product claiming it has no added sugar mustn’t contain any sugar used as a sweetener. If sugars naturally occur in the food, the label should also say ‘contains naturally occurring sugars’.
Different words for sugar
It can sometimes be tricky to find sugar on food labels, especially if the manufacturer uses scientific names for the various types of sugar instead. Names to look out for include:
- dextrose
- fructose
- glucose
- maltose
- sucrose
- monosaccharide
- disaccharide
- honey
- molasses
- syrups (such as treacle, corn and maple syrups)
- fruit juice concentrates
Low-salt claims
Some salt is good for you, but too much salt may increase your blood pressure and cause other health problems. Many people have too much salt in their diet, so cutting down and avoiding added salt can be good for your health. There are lots of other ways to add flavour to your food.
A food claiming to be low in salt mustn’t contain more than 0.12g of sodium per 100g or 100ml of product. This is the same as 0.3g of salt per 100g or 100ml of product. Very low salt products can’t contain more than 0.04g of sodium (0.1g salt) per 100g or 100ml of product.
Fibre claims
Fibre is good for your digestive system and your general health. Adults should aim to eat 30g of fibre a day as part of a healthy, balanced diet.
If a food claims to be high in fibre, it must contain at least 6g of fibre per 100g of food. Or, it has to contain at least 3g of fibre for every 100 calories it contains.
Allergy labelling
Food manufacturers are legally obliged to show clearly if a food contains any of the 14 main ingredients that can cause an allergy or intolerance. They should show this on the label by highlighting the food in the ingredients list – in bold, italics, capital letters, underlining or another colour. This means that the allergenic ingredients are easy to see.
The 14 main ingredients that could cause an allergy or intolerance are:
- peanuts
- tree nuts (such as almonds, hazelnuts, cashews and walnuts)
- fish
- crustaceans (such as prawns, crab and lobster)
- molluscs (such as squid, mussels and snails)
- eggs
- milk (including lactose)
- sesame seeds
- lupin
- soya beans
- cereals containing gluten (such as wheat, rye, barley and oats)
- celery and celeriac
- mustard
- sulfur dioxide and sulfites if they are over 10mg per kg or litre of the product
Nutrition and health claims
Manufacturers have to follow certain rules if they want to make any nutrition or health claims for their product. They can’t say or suggest that any product can treat, prevent or cure any health problem. They can only make nutrition and health claims if these are backed by approved medical research and fit in with specific guidelines.
- A nutrition claim includes that a product is ‘low fat’ or ‘low in salt’.
- A health claim includes saying that ‘calcium can keep your bones healthy’.
There are different rules for food supplements, fortified foods (containing extra vitamins and minerals) and foods for a specific use (such as baby milks).
Did our information help you?
We’d love to hear what you think. Our short survey takes just a few minutes to complete and helps us to keep improving our health information.
About our health information
At Bupa we produce a wealth of free health information for you and your family. This is because we believe that trustworthy information is essential in helping you make better decisions about your health and wellbeing.
Our information has been awarded the PIF TICK for trustworthy health information. It also follows the principles of the The Information Standard.
Tools and calculators
Calories calculator
If you want to lose weight, you need to increase your physical activity and watch your calorie intake. Bupa's calorie calculator will help you to work out how many calories you're burning in a day.
Healthy eating quiz
A healthy balanced diet is essential for your physical and mental wellbeing. Take our healthy eating quiz to find out how much you know about nutrition.
BMI calculator
BMI, or body mass index, is one way of measuring whether you’re a healthy weight for your height.
Simply enter your details into our calculator and the result will give you an indication of whether you're a healthy weight.
-
Other helpful websites Other helpful websites
- British Nutrition Foundation
020 7557 7930
www.nutrition.org.uk - Food Standards Agency
0330 332 7149
www.food.gov.uk
- British Nutrition Foundation
-
Sources Sources
- Looking at nutrition labels. British Nutrition Foundation. www.nutrition.org.uk, published April 2019
- Food labelling and packaging. Food Standards Agency. www.gov.uk, accessed March 2020
- Labelling food – pre-packed. Food Standards Agency. www.food.gov.uk, updated January 2018
- Best before and use by dates. Food Standards Agency. www.food.gov.uk, updated January 2018
- Genetically modified foods. Food Standards Agency. www.food.gov.uk, last updated January 2018
- Helping you eat well. British Nutrition Foundation. www.nutrition.org.uk, last reviewed December 2016
- Fat facts: food fact sheet. The Association of UK Dietitians. www.bda.uk.com, published January 2018
- Nutrition Claims. European Commission. ec.europa.eu, accessed March 2020
- Fats explained. British Nutrition Foundation. www.nutrition.org.uk, accessed March 2020
- Sugar: food fact sheet. The Association of UK Dietitians. www.bda.uk.com, accessed March 2020
- Salt: food fact sheet. The Association of UK Dietitians. www.bda.uk.com, accessed March 2020
- Frequently Asked Questions. Action on Salt. www.actiononsalt.org.uk, accessed March 2020
- Fibre: food fact sheet. The Association of UK Dietitians. www.bda.uk.com, accessed March 2020
- Food labelling: nutrition information: food factsheet. The Association of UK Dietitians. www.bda.uk.com, published August 2018
- Wang M, Yu M, Fang l, et al. Association between sugar-sweetened beverages and type 2 diabetes: a meta analysis. J Diabetes Investig 2015; 6(3):360–66. doi: 10.1111/jdi.12309
- Healthy Living. Oxford handbook of general practice. Oxford Medicine Online. oxfordmedicine.com, published online April 2014
-
Author information Author information
Reviewed by Victoria Goldman, Freelance Health Editor and Natalie Heaton, Specialist Health Editor, Bupa Health Content Team, May 2020
Expert reviewer, Paul McCardle, Registered Dietitian
Next review due April 2023
Legal disclaimer
This information was published by Bupa's Health Content Team and is based on reputable sources of medical evidence. It has been reviewed by appropriate medical or clinical professionals and deemed accurate on the date of review. Photos are only for illustrative purposes and do not reflect every presentation of a condition.
Any information about a treatment or procedure is generic, and does not necessarily describe that treatment or procedure as delivered by Bupa or its associated providers.
The information contained on this page and in any third party websites referred to on this page is not intended nor implied to be a substitute for professional medical advice nor is it intended to be for medical diagnosis or treatment. Third party websites are not owned or controlled by Bupa and any individual may be able to access and post messages on them. Bupa is not responsible for the content or availability of these third party websites. We do not accept advertising on this page.
For more details on how we produce our content and its sources, visit the About our health information section.
^We may record or monitor our calls
