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Is saccharin allowed in the UK?

3 min read

Saccharin, the first commercially produced low-calorie sweetener, has been in use in the UK since sugar shortages during World War I. Today, it remains a permitted food additive, but its usage is subject to stringent regulations to ensure consumer safety.

Quick Summary

Saccharin is legally permitted in the UK and regulated by the Food Standards Agency, with strict controls on use and maximum levels based on recent safety assessments.

Key Points

  • Legally Permitted: Saccharin, known as E954, is a legally approved food additive in the UK.

  • Strictly Regulated: The Food Standards Agency (FSA) monitors and enforces strict maximum permitted levels for saccharin use in specific foods.

  • Safety Reaffirmed: A 2024 EFSA re-evaluation confirmed saccharin's safety and increased the Acceptable Daily Intake (ADI) based on new scientific consensus.

  • Not for Young Children: UK health experts advise against giving drinks with artificial sweeteners to younger children.

  • Historical Scare Invalidated: Concerns from 1970s rat studies that linked saccharin to cancer were later found to be irrelevant to human health.

  • Found in Diet Products: Saccharin is used in many diet drinks, tabletop sweeteners like Hermesetas, and jams.

  • Post-Brexit Continuation: The UK has maintained the regulatory framework for saccharin from its time as an EU member.

In This Article

The Legal Status of Saccharin in the UK

Saccharin, identified as E954 on ingredient lists, is a legally approved artificial sweetener for use in the United Kingdom. Following the UK's departure from the European Union, the country retained much of the pre-existing EU food additive legislation, including Regulation (EC) No 1333/2008, which governs the use of additives like saccharin. This means that the rules for where and how much saccharin can be added to food and drink are well-established and enforced by UK authorities.

The Role of Regulatory Bodies

The Food Standards Agency (FSA) is the primary body responsible for ensuring the safety and legal compliance of food additives in the UK. It continuously reviews the safety of permitted substances, basing its decisions on expert scientific advice and the latest research. This was demonstrated in late 2024 when the European Food Safety Authority (EFSA)—a body whose scientific opinions are highly influential in the UK—re-evaluated saccharin. The EFSA concluded that saccharin is safe and increased the Acceptable Daily Intake (ADI) for adults, a determination that reinforces the UK's confidence in its continued use.

Usage and Product Availability

Saccharin is not a general-purpose sweetener and is limited to specific food categories and maximum levels. Its stability makes it suitable for a range of products, and it is commonly found in:

  • Tabletop sweeteners (like Hermesetas)
  • Diet soft drinks and sugar-free beverages
  • Jams, jellies, and tinned fruits
  • Certain confectionery and chewing gums
  • Some baked goods and dessert toppings

It is important to note that specific regulations govern which products can contain saccharin and in what quantities. For instance, in both the UK and the EU, its use in cakes and bakery goods is forbidden.

Comparison of Common Sweeteners in the UK

Sweeteners are often blended to reduce overall sweetness while balancing taste profiles. Here is a comparison of saccharin with other popular alternatives used in the UK.

Feature Saccharin (E954) Aspartame (E951) Sucralose (E955)
Sweetness vs. Sugar ~300-400x ~200x ~600x
Calories Zero Low Zero
Heat Stability Very high Low High
Common Aftertaste Often described as slightly bitter or metallic Not typically Not typically
Common Use Cases Tabletop, diet drinks, jams Diet drinks, desserts Baking, drinks, processed foods

The Saccharin Safety Debate: Past vs. Present

Saccharin has a controversial history, primarily stemming from a study in the 1970s that linked it to bladder tumours in male rats. This led to mandatory warning labels on saccharin products in some countries. However, subsequent, more comprehensive research revealed that the mechanism causing these tumours in rats is not relevant to human biology. As a result, the International Agency for Research on Cancer (IARC) reclassified saccharin, and warning label requirements were removed.

More recently, concerns have shifted to the potential impact of sweeteners on gut bacteria and weight management. Preliminary studies have suggested some links, but research in this area is ongoing and not yet conclusive. In April 2025, the UK Scientific Advisory Committee on Nutrition (SACN) specifically advised against giving drinks containing artificial sweeteners, including saccharin, to young children, encouraging them to get used to plain water instead.

Ensuring Public Health in the UK

The UK's regulatory approach to saccharin is cautious and evidence-based. The FSA's continuous oversight and review of sweeteners demonstrate a commitment to public safety. In fact, UK health experts recently called for industry data on the quantities of sweeteners used in products to improve monitoring of population exposure. This shows a proactive stance on managing public health concerns related to food additives.

Conclusion

Yes, saccharin is and remains allowed for use in the UK as a food additive. Its journey from wartime sugar substitute to a standard food additive was marked by scientific controversy, but modern regulatory bodies, including the UK's FSA and Europe's EFSA, now consider it safe for consumption within specified limits. While its use is restricted to certain food types and consumption by young children is not recommended, it offers a safe, low-calorie alternative to sugar for many adults. Ongoing monitoring and data collection ensure that regulations stay current with the latest scientific understanding. For more information, you can visit the official Food Standards Agency website.

Frequently Asked Questions

Saccharin is identified by the E-number E954 on food labels in the UK and the rest of Europe.

Yes, saccharin is considered safe for human consumption within legally permitted levels, according to assessments by the UK Food Standards Agency and the EFSA.

In the 1970s, high-dose rat studies linked saccharin to bladder tumours. However, further research showed the mechanism was specific to rats and not relevant to humans, leading to the removal of warning labels.

The Scientific Advisory Committee on Nutrition (SACN) in the UK has recently advised against giving drinks containing sweeteners, including saccharin, to young children.

No, saccharin's use is limited to specific food and drink categories with set maximum levels, based on food additive regulations. For example, it cannot be used in cakes.

Yes, in late 2024, the EFSA increased the ADI for saccharin to 9 mg per kg of body weight per day after reviewing new scientific data.

The UK retained EU food additive regulations, including rules for saccharin. The Food Standards Agency (FSA) now oversees ongoing safety assessments in the UK.

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.