LONDON, UK: From 13 December 2026, new UK regulations will require folic acid to be added to non-wholemeal common wheat flour. The change will affect flour used in many everyday foods, including bread, cakes, biscuits and pastries.
The Government aims to increase vitamin B9 intake across the population and prevent around 200 cases of neural tube defects each year. The new requirement is designed to improve early pregnancy health, including among women who may not know they are pregnant.
What the New UK Flour Law Will Change
The UK Government is introducing mandatory folic acid fortification through changes to its existing Bread and Flour Regulations.
Under the new rules, millers and flour producers must add synthetic folic acid to non-wholemeal common wheat flour from 13 December 2026.
The requirement applies to non-wholemeal common wheat flour produced in or imported into the UK. Common wheat is scientifically known as Triticum aestivum. It is widely used to produce flour for everyday food products.
The change does not mean that manufacturers must add folic acid separately to every loaf of bread, cake or packet of pasta. Instead, the vitamin must be included in the flour covered by the regulations. Foods made with that flour can then provide additional folic acid through normal consumption.
The Daily Mirror’s report on the new UK flour law has highlighted familiar products such as bread, pasta and cakes. However, the actual impact will depend on the type of wheat flour used in each product.
According to the GOV.UK guidance on bread and flour composition, the new requirement will apply across the UK.
How Much Folic Acid Will Be Added to Flour?
The regulations require flour producers to add 0.25 milligrams (mg) of folic acid per 100 grams of flour.
This is equivalent to 250 micrograms per 100 grams.
The requirement applies to the flour itself, not to every 100-gram serving of bread or another finished food. The final amount of folic acid in a food product will depend on how much fortified flour it contains.
The addition is mandatory regardless of the natural folate already present in the flour.
Which Nutrients Must Be Added to UK Flour?
Folic acid is not the only nutrient covered by the updated regulations. UK non-wholemeal common wheat flour already has mandatory fortification requirements for calcium carbonate, iron, niacin and thiamin.
The new rules also increase the required amounts of certain existing nutrients.
The following table compares the current requirements with those that will apply from 13 December 2026.
| Nutrient | Existing requirement | From 13 December 2026 |
|---|---|---|
| Iron | At least 1.65 mg | At least 2.10 mg |
| Niacin (Vitamin B3) | At least 1.60 mg | At least 2.40 mg |
| Thiamin (Vitamin B1) | At least 0.24 mg | At least 0.24 mg |
| Calcium carbonate | 235 to 390 mg | 300 to 455 mg |
| Folic acid (Vitamin B9) | No mandatory requirement | 0.25 mg |
All quantities are per 100 grams of common wheat flour.
These changes build on an existing public health policy. The Government has required flour fortification with certain nutrients for decades. The addition of folic acid expands this approach to address a specific concern about pregnancy health.
Why Is the UK Adding Folic Acid to Flour?
The main reason for the new law is to reduce the risk of neural tube defects in babies.
Folic acid is essential for normal cell growth and development. It supports the early formation of the baby’s brain and spinal cord during pregnancy.
A sufficient supply of folate during this stage helps reduce the risk of neural tube defects. These conditions develop when the neural tube does not close properly during early pregnancy.
The decision to introduce mandatory fortification also reflects a challenge with existing pregnancy advice. Many women do not take folic acid supplements before conception, while others may not realize they are pregnant during the critical early weeks.
Why Are Neural Tube Defects a Concern?
Neural tube defects are birth conditions that affect the development of the brain, spine or spinal cord. They develop during the first few weeks of pregnancy, often before a woman knows she is pregnant.
The three recognized examples include:
Spina bifida
Spina bifida develops when the spinal cord and the surrounding bones do not form properly. The condition can cause problems with movement, muscle strength, bladder control and bowel function. Its effects range from mild to severe.
Anencephaly
Anencephaly is a serious birth defect in which major parts of the baby’s brain and skull fail to develop. The condition is usually fatal before or shortly after birth.
Encephalocele
Encephalocele occurs when brain tissue and the membranes covering it protrude through an opening in the skull. The effects depend on the size and location of the defect.
These conditions can have serious consequences for affected babies and their families. However, many neural tube defects can be prevented by improving folic acid intake before conception and during early pregnancy.
How Many Pregnancies Could Benefit From the New Rule?
Government estimates suggest that around 1,000 pregnancies affected by neural tube defects are diagnosed every year in the UK.
The actual number may be higher because some affected pregnancies end in miscarriage before diagnosis. Some milder cases of spina bifida may also remain undetected.
The new fortification policy is expected to prevent approximately 200 cases of neural tube defects every year, representing around 20% of the estimated annual UK total.
This is an important public health benefit because it could reduce the number of pregnancies affected by serious brain and spinal conditions.
The Government’s estimate comes from its announcement on mandatory folic acid fortification of flour, published on 14 November 2024.
Why Are Supplements Alone Not Enough?
The UK already recommends that women take folic acid before pregnancy and during its early stages. However, this advice does not always reach women at the right time.
According to the Government’s consultation on flour fortification:
- Around half of pregnancies in the UK are estimated to be unplanned.
- Only one-fifth of women reported taking folic acid before pregnancy.
- This increased to three-fifths after pregnancy was confirmed.
The timing is particularly important. Neural tube development takes place during the first four weeks of pregnancy. Some women may not know they are pregnant during this period.
Mandatory fortification aims to provide a background intake of folic acid through everyday food. It reduces dependence on women knowing about pregnancy early enough to start taking supplements.
The Government’s consultation document on adding folic acid to flour explains the public health reasons behind the policy.
What Is the Difference Between Folate and Folic Acid?
Folate and folic acid are two forms of vitamin B9. Both are important for normal cell development and other essential functions in the body.
However, they differ in their sources and stability.
Folate occurs naturally in foods. Good dietary sources include:
- Spinach and other green leafy vegetables
- Broccoli and Brussels sprouts
- Peas and beans
- Chickpeas and lentils
- Other vegetables and legumes
Folic acid is the synthetic form of vitamin B9. It is commonly used in supplements and fortified foods.
One important reason for using folic acid in flour is its stability. Natural food folates are more sensitive to heat and food processing. Folic acid is more stable and can remain active during cooking and baking.
This makes it suitable for fortifying flour used in everyday food production.
The US Centers for Disease Control and Prevention (CDC) explains the difference between natural folate and synthetic folic acid in its clinical overview of folic acid.
Which Foods Could Contain Added Folic Acid?
The new law applies to flour rather than individual food categories. Therefore, products made using non-wholemeal common wheat flour may contain added folic acid.
These products may include:
- White bread and other products made with covered wheat flour
- Cakes and biscuits
- Pastries and croissants
- Certain pasta products, depending on the flour used
- Some stuffing and gravy mixes
- Other baked goods made with fortified flour
Not every product in these categories will automatically contain added folic acid.
For example, many traditional pasta products use durum wheat rather than common wheat. The new requirement applies specifically to non-wholemeal common wheat flour, so consumers should not assume that all pasta products will be affected.
Imported finished food products containing multiple ingredients, including flour, are also not covered by this particular fortification requirement.
The exact composition of a product will depend on its ingredients and manufacturing process.
Which Flour Types Are Exempt From Mandatory Folic Acid Fortification?
The regulations do not require every type of flour to contain added folic acid.
The main exemptions include:
Wholemeal flour
Wholemeal flour is made using the entire edible grain, including the bran, germ and endosperm. It is not subject to mandatory folic acid fortification.
Flour produced by small mills
Small mills are exempt if they meet both of the following conditions:
- Their maximum annual flour production capacity does not exceed 500 metric tonnes.
- They have produced less than 500 metric tonnes of flour in each of the previous three calendar years.
This exemption applies to qualifying small mills in the UK and other countries.
Flour used for specific products
Flour produced for making communion wafers, matzos, gluten or starch is also exempt from the mandatory fortification requirement.
These exemptions allow certain alternative flour products to remain outside the new requirement.
Consumers who prefer flour without mandatory folic acid fortification can choose wholemeal flour. However, they should check individual product ingredients when making dietary decisions.
Will Imported Flour and Finished Foods Follow the Same Rules?
The regulations distinguish between imported flour and imported finished food products.
Non-wholemeal common wheat flour imported into the UK is generally subject to the same fortification requirements as flour produced domestically.
However, imported products containing multiple ingredients, including flour, are not covered by this particular requirement when they enter the UK as finished foods.
This means a packaged bakery product imported from another country will not automatically have to follow the same flour fortification rules simply because it contains wheat flour.
The distinction is important for food manufacturers, importers and consumers. The regulation focuses on the flour entering the UK supply chain rather than imposing an identical requirement on every finished food product.
What Happens to Existing Flour Stocks After 13 December 2026?
The Government has introduced transitional arrangements to help flour producers and food businesses prepare for the change.
Flour that complies with the previous requirements can remain on the market after 13 December 2026 if it was labelled or placed on the market before that date.
This means businesses will not necessarily have to remove all existing flour stocks immediately when the new rules take effect.
The transition period also gives manufacturers time to update their production processes, supply arrangements and product labels.
How Will Consumers Identify Folic Acid in Food Products?
Food manufacturers must declare added vitamins and minerals in the ingredients list.
When fortified flour is used in a finished product, the added nutrients must also be declared.
For example, a product label may list fortified wheat flour as:
Wheat Flour (Wheat Flour, Calcium Carbonate, Folic Acid, Iron, Niacin, Thiamin).
Consumers can check the ingredients list to identify whether a product contains flour with added folic acid.
This is particularly useful for people who need to monitor their dietary intake or follow specific food requirements.
Will Fortified Foods Replace Folic Acid Supplements During Pregnancy?
No. Mandatory flour fortification will not replace the existing NHS recommendation to take folic acid supplements before and during early pregnancy.
The NHS advises women who are trying to conceive to take 400 micrograms of folic acid every day, ideally starting three months before pregnancy.
They should continue taking the supplement until the end of the first 12 weeks of pregnancy.
This recommendation will remain in place after the new flour regulations come into effect.
The reason is simple. Although fortified foods can improve overall folic acid intake, it can be difficult to obtain the recommended amount from food alone.
Some women may also require a higher dose of folic acid because of their medical history or other risk factors.
The NHS advises that women who have previously had a pregnancy affected by a neural tube defect, have certain medical conditions or take specific medicines may need 5 milligrams of folic acid daily. This higher dose should be prescribed by a GP or healthcare professional.
Women planning a pregnancy should speak to their healthcare professional about the appropriate supplement and dosage.
The NHS provides further information in its guidance on pregnancy vitamins and supplements.
What the New UK Flour Law Means for Public Health
The mandatory addition of folic acid to non-wholemeal wheat flour is an important preventive public health measure.
It aims to improve folic acid intake across the UK population, particularly among women who may become pregnant without planning to do so.
The policy also addresses the limitations of relying solely on individual supplement use. Neural tube defects develop very early in pregnancy, making it difficult for some women to receive enough folic acid through supplements before the critical developmental period.
From 13 December 2026, fortified flour will provide an additional dietary source of folic acid through commonly consumed foods.
The change is expected to prevent around 200 neural tube defect cases annually. However, it will not eliminate every case or replace the need for pregnancy supplements.
For consumers, the biggest change will happen during food production rather than through a major change in everyday eating habits. Checking product labels, eating a balanced diet and following NHS pregnancy advice will remain important.
