Pigs in blankets Sandwich

M&S Food

29198764

Processing

4

Ultra-processed

Group 4 of 4 on the NOVA scale

Additives listed

7

2 we grade moderate or higher

3 of them not yet assessed here

Fat per 100g

16.32g

Medium

UK FSA front of pack threshold

Three separate readings, kept apart on purpose. This is not a score, and none of it says this product is harmful.

This label lists 2 antioxidants, 2 emulsifiers, 2 preservatives and 1 raising agent.

E250 Sodium nitrite
Preservative and colour fixer, cured meats
Higher concern strong evidence

What it is. A curing salt that keeps cured and processed meats pink and stops the growth of the bacteria behind botulism.

Why it is used. Used in bacon, ham, salami and hot dogs for preservation, safety and colour.

What the evidence says. The concern is not the additive in isolation but processed meat as a whole, which the WHO's cancer agency IARC classes as Group 1, meaning there is sufficient evidence it causes colorectal cancer. Nitrite can form nitrosamines during curing and cooking, and those are the likely culprit. Risk rises with how much processed meat you eat over time.

Regulatory status UK Permitted with limits or a warning EU Permitted with limits or a warning US Permitted with limits or a warning

Permitted with strict maximum levels. The EU cut the allowed limits further from 2023 to reduce nitrosamine formation.

Assessed against IARC, EFSA, UK FSA. Full entry for E250

E251 Sodium nitrate
Preservative, cured meats and some cheeses
Higher concern strong evidence

What it is. A curing agent that slowly converts to nitrite in the product, giving a longer acting preservative effect.

Why it is used. Used in dry cured meats and a few traditional cheeses.

What the evidence says. Sits under the same processed meat evidence as nitrite, since it ends up as nitrite in the food. Same practical takeaway: the issue is regular processed meat intake, not a trace in one meal.

Regulatory status UK Permitted with limits or a warning EU Permitted with limits or a warning US Permitted with limits or a warning

Permitted with maximum levels, tightened in the EU alongside nitrite.

Assessed against IARC, EFSA, UK FSA. Full entry for E251

E471 Mono- and diglycerides of fatty acids
Emulsifier
Low limited evidence

What it is. Fat derived emulsifiers, closely related to ordinary dietary fats.

Why it is used. One of the most used additives in food: bread, margarine, ice cream, cakes and sauces.

What the evidence says. The body handles these much as it handles other fats, and EFSA's re-evaluation raised no safety concern at the levels used. They sit in the same broad emulsifier and gut microbiome research question as the others, which remains unsettled.

Regulatory status UK Permitted EU Permitted US Permitted

Permitted without a numerical limit. The fat source is not always stated, which matters for some diets rather than for safety.

Assessed against EFSA. Full entry for E471

E300 Ascorbic acid (vitamin C)
Antioxidant
No real concern strong evidence

What it is. Vitamin C, added to protect colour and flavour and sometimes to fortify.

Why it is used. Stops browning in juices and cut fruit, protects fats, and boosts vitamin content.

What the evidence says. Beneficial and harmless at the levels used. Included here as a reminder that an E number is just a code, and plenty of them are ordinary nutrients.

Regulatory status UK Permitted EU Permitted US Permitted

Permitted freely, no concern.

Assessed against EFSA, JECFA. Full entry for E300

Also on the label, not assessed here yet

  • E301 Sodium ascorbate antioxidant
  • E472E Mono- and diacetyltartaric acid esters (DATEM) emulsifier
  • E503 Ammonium carbonates raising agent

Names and jobs come from the register of additives permitted in Great Britain, which we have not finished transcribing: a code shown without a name is a gap in our coverage, not a finding that it is unapproved. Naming one is not grading it either. Full detail appears only where we have an assessment against a named authority, so all of this describes our coverage rather than these additives. Most are common and low concern.

British Pork Sausage (29%) (Pork (7.3%), Wheatflour* , Pea Protein Isolate, Dextrose, Wheat Starch, Salt, Ground Spices (White Pepper, Coriander, Mace ,Nutmeg), Dried Onions, Black Pepper Extract, Yeast Extract, Dried Sage , Raising Agent: E503) , Wheatflour*, Water, Red Onion and Ruby Port Chutney (7%) (Red Onions, Sugar, Red Wine Vinegar, Ruby Port ,Muscovado Sugar, Concentrated Lemon Juice, Ground Spices (Nutmeg, Cloves, Allspice. Cinnamon), Coarse Black Pepper, Ground Bay Leaves), Smoked British Bacon (7%) (Pork Belly (made with 185g of Raw Pork per 100g of Cooked Bacon), Curing Salt (Salt, Preservative: Sodium Nitrate, Sodium Nitrite), Sugar, Natural Flavouring, Antioxidant: E301), Rapeseed Oil, Onions, Malted Wheatflakes,Pasteurised Egg,Brown Sugar , Wheat Bran,Butter (Milk) , Balsamic Vinegar, Sugar, Salt, Vinegar, Yeast (Yeast ,Vitamin D Yeast) , Malted Barley Flour, Palm Oil, Cornflour, Dried Yeast, Concentrated Mushrooms, Emulsifier: E471, E472e, Concentrated Lemon Juice, Malted Wheatflour, Dried Fermented Wheatflour, Wheat Gluten, Reduced Sodium Salt, Sage, Concentrated Tomatoes, Dried Mustard, Ground Spices (White Pepper ,Allspice,Turmeric), Concentrated Carrot Juice , Mushroom Extract , Seaweed Extract ,Dried Mushrooms , Concentrated Onion Juice,Dried Onions, Flour Treatment Agent: Ascorbic Acid, Vegetable Oil (Sunflower/Rapeseed), Natural Flavouring, Tomato Purée, Palm Fat. *Fortified with Calcium, Iron, Vitamin B3 and B1.

As printed on the pack, in the producer's own order: ingredients are listed by weight, so what comes first is most of what is in it. E numbers link to their assessment where we have one.

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