Three tiers, not one
Shoppers tend to treat all farming descriptions as a single category of claim, and that is the source of most of the confusion. In fact there are three quite different tiers, and a term's tier determines what, if anything, stands behind it.
Marketing standards. A small number of terms are defined in marketing standards for a specific commodity, with conditions that are set out in law and are inspectable. Free range is the leading example, and it is defined separately for eggs and for poultry meat.
Scheme and industry definitions. Some terms are defined by an assurance scheme or an industry code. They are meaningful within that scheme and are audited by it, but they are not general law and a producer outside the scheme is not bound by them.
Undefined descriptions. The remainder are governed only by the general prohibition on misleading information and by the advertising codes.
Eggs: the most defined case
Egg marketing standards define the farming methods that may be used to describe eggs, and set conditions for each. Free range, barn and eggs from caged hens are defined categories with requirements covering housing, access, stocking density and related matters.
Eggs also carry a producer code stamped on the shell, and the first digit of that code indicates the farming method. This is an unusually good piece of consumer information, because it travels with the individual egg rather than with the pack, and it is standardised.
The code also identifies the country and the individual production site, which is why the egg system is the most traceable part of the pack for most shoppers. It is worth noting that the same code is on the egg regardless of what the box says, so the two can be checked against each other.
There are also provisions on what happens to the free range description in defined exceptional circumstances, for example where housing measures are imposed for disease control reasons, with rules on how eggs must then be described.
| Term | Source of definition | Audited by |
|---|---|---|
| Free range, eggs | Egg marketing standards | Official controls and inspection |
| Barn, eggs | Egg marketing standards | Official controls and inspection |
| Free range, poultry meat | Poultry meat marketing standards | Official controls and inspection |
| Traditional free range, poultry meat | Poultry meat marketing standards | Official controls and inspection |
| Outdoor bred and outdoor reared, pigs | Industry code and assurance schemes | The relevant scheme |
| Grass fed | No general definition | Only a named scheme, if one is present |
| Farm fresh and similar | No definition | Nobody |
Structure set out by this newsroom from the published rules named in the sources below. It is not a survey, a measurement or a market study.
Poultry meat: defined, and more granular than most people expect
Poultry meat marketing standards define a set of optional descriptions of farming method. These include free range, traditional free range and free range total freedom, along with descriptions covering extensive indoor or barn reared production.
Each carries conditions relating to matters such as stocking density, the age at slaughter, the nature and area of outdoor access and the feed composition. The conditions differ between the descriptions, which is why the three free range variants are not synonyms.
The existence of graduated terms is genuinely useful, and it is under-used by shoppers, largely because the differences between them are not explained on packs. A shopper who knows there are several defined free range descriptions is in a position to notice which one is being used.
Pigs: industry definitions rather than general law
Descriptions used for pigmeat, notably outdoor bred and outdoor reared, do not have the same status as the egg and poultry marketing standards. They are defined through industry agreement and assurance schemes, with published criteria concerning where the animals were born and how long they spent outdoors.
The distinction between bred and reared is precise within those definitions and easily missed by a reader, since the two words look interchangeable and are not. Because the definitions belong to schemes and codes rather than to general law, the meaningful check is which scheme is named on the pack.
Grass fed: no general definition
Grass fed has no general legal definition in the UK. There is no statutory threshold for the proportion of an animal's diet that must come from grass and forage, and no statutory period over which it must apply.
Where the term is used with a certification mark, the scheme's published standard supplies the meaning, and those standards do specify proportions and periods. Where it is used without one, the term rests on the general prohibition on misleading information, which means it must not create a false impression but is not held to a defined threshold.
The practical consequence is that grass fed is a term where the presence or absence of a named scheme changes the claim entirely. It is one of the clearest examples in food marketing of a phrase whose strength lives outside the phrase.
Welfare, which is a separate question again
It is worth separating farming method descriptions from animal welfare standards, because they overlap without coinciding.
Welfare is governed by animal welfare legislation and by statutory codes of practice for each species, which apply to all farms regardless of what appears on any pack. Marketing standards define descriptions used in trade. Assurance schemes set their own standards, which may exceed the legal baseline.
A pack description therefore tells you which marketing category or scheme a product falls into. It is not a summary of the welfare rules that applied, which apply anyway, and it is not a welfare rating.
Where this stops
This article describes which terms are defined and where the definitions live. It does not assess any farming method, does not compare production systems and makes no recommendation. It also makes no nutritional claim of any kind, and any dietary question belongs with the NHS or a registered dietitian.