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Syns in Tesco Sandwiches: Complete Slimming World Guide - She Cooks She Eats - The Healthier Eating Choice

Syns in Tesco Sandwiches: Complete Slimming World Guide

Updated on 
9 March, 2026

Are Tesco Sandwiches High In Syns? - Our SW Unofficial Syn Guide

If you're grabbing a Tesco meal deal, you want to try and choose the most syn-friendly options so that they can fit in your 15 syn daily allowance, sandwiches can often contain a lot of syns due to the bread and fillings.

How Many Syns In Tesco Sandwiches?

Tesco sandwiches have varying syn values according to the fillings inside, on average you can expect them to have around 15-16 syns, making them very high in syns.

In our syn guide below we will discuss why Tesco sandwiches are so high in syns, some syn values of them and low syn supermarket alternatives for easy lunches.

Why Are Tesco Sandwiches So High In Syns?

At 15-16 syns per sandwich, Tesco sandwiches are very high in syns, this is due to the white bread, which is synned on the SW plan at about 5-6 syns a slice plus non-syn friendly fillings like butter and mayonnaise.

Lots of Tesco sandwiches contain oil and high amounts of fat which increases their syn content, for example, a Tesco Prawn Mayonnaise Sandwich has around 8g of fat in per pack.

As a syn friendly alternative, we recommend making your own sandwiches at home for on-the-go, by using wholemeal bread, you can free up syns since you can use wholemeal bread as your healthy extra B.

You can also choose syn friendly fillings such as chicken coronation, made with fat free Greek yoghurt and spices or opt for light mayo instead of full-fat mayo.

Syn Values Of Tesco Sandwiches

As we mentioned above, Tesco sandwiches can be very high in syns, having between 15-16 syns pack, however, syns vary according to the fillings.

To help you compare syns, we've listed their varying syn values below.

  • Tesco Ham No Mayonnaise - 11 syns.
  •  Tesco Chicken Salad Sandwich - 18.5 syns.
  •  Tesco Smoked Ham & Cheddar Meal Deal - 12.5 syns.
  •  Tesco Egg & Cress - 10 syns.
  •  Tesco Tuna & Sweetcorn - 9.5 syns.
  •  Tesco Tuna & Cucumber Sandwich - 9 syns.
  •  Tesco Prawn Mayonnaise Sandwich on Malted Bread - 16 syns.
  •  Tesco Cheese & Onion - 18.5 syns.
  •  Tesco Chicken, Bacon & Stuffing Sandwich - 12 syns.
  •  Tesco Chicken Triple Sandwich - 10 syns.
  •  Tesco The Chicken Club Sandwich - 10 syns.
  •  Tesco Chicken, Bacon & Lettuce Meal Deal - 11.5 syns.
  •  Tesco Free Range Egg Mayonnaise Meal Deal- 11.5 syns.
  •  Tesco BLT - 10.5 syns.
  •  Tesco Chicken Salad - 8 syns.

Low Syn Alternatives To Tesco Sandwiches

Since Tesco sandwiches are so high in syns, you might be wondering if there are any other more syn-friendly sandwiches as an alternative to grab on the go when you don't have time to make lunch.

We've listed a few syn-friendly alternatives below.

  • Sainsbury's On the go Chicken Salad - 9.5 syns.
  •  Sainsbury's On the Go Meal Deal Main Tuna Mayo on Oatmeal Bread - 10.5 syns.
  •  Sainsbury's On the Go Chicken & Bacon - 12 syns.
  •  Asda Chicken Salad with Chicken Breast Sandwich - 8.5 syns.
  •  Asda Prawn Mayonnaise Sandwich - 10 syns.
  •  Asda Egg & Cress Sandwich - 9.5 syns.
  •  Asda Tuna & Sweetcorn - 9 syns.
  •  Sainsbury's On the Go Prawn Mayo on Oatmeal Bread - 9 syns.
  •  Sainsbury's On the Go BLT on Malted Bread - 10.5 syns.
  •  M&S Food Smoked Ham & Mustard Mayonnaise Sandwich - 10.5 syns.
  •  M&S Food Tuna & Sweetcorn Sandwich - 10 syns.
  •  M&S Food Free Range Egg Tomato & Salad Cream Sandwich - 9 syns.
  •  M&S Turkey Feast Sandwich on Soft Malted Bread - 24 syns.
  •  M&S Food BLT Sandwich - 11 syns.
  •  Sainsbury's On the Go Cheese & Red Onion on Oatmeal Bread - 14.5 syns.
  •  Sainsbury's On the Go Lighter Tuna & Cucumber with Black Pepper Mayo - 17.5 syns.
  •  Aldi Eat & Go Egg & Cress Sandwich with Mayonnaise - 17.5 syns.
  •  Aldi Eat & Go Roast Chicken Salad Mayo Sandwich - 17.5 syns.
  •  Asda Cheddar Cheese Sandwich - 15 syns.

Last Words

To conclude, Tesco sandwiches are high in syns, having between 15-16 syns a pack, this is your whole daily syn allowance in just one meal! These sandwiches are high in syns due to their non-syn friendly fillings and pieces of bread which are around 5-6 syns a slice.

In order to save syns, we recommend opting for wholemeal bread which can be used as your healthy extra B on the plan and choosing low syn fillings such as tuna mayo which can be made syn free on the plan.

Frequently Asked Questions

How are syn values calculated?

Syn values are calculated using a formula based on calories, saturated fat and sugar content per serving. They’re not the same as calories — a product can be low in calories but higher in syns if it’s high in sugar or fat. Always check the official Slimming World app for the most accurate and up-to-date syn values.

Do syn values change?

Yes. When manufacturers reformulate their products, the syn value can go up or down. This is why we recommend double-checking with the Slimming World app or your consultant, especially if a product’s packaging has changed recently.

How many syns should I have per day?

Most Slimming World members work with 5 to 15 syns per day. Your consultant will advise on the right amount for you. The key is to use your syns on the things you enjoy most — whether that’s a chocolate bar, a glass of wine, or a packet of crisps.

Jennifer
Jennifer is a certified nutritionist and weight loss coach with a Master's in Nutrition from Cambridge. With over 10 years experience, she shares healthy recipes and science-backed slimming tips on SheCooksSheEats to help people reach their wellness goals. Jennifer stays up-to-date by regularly attending conferences and continuing her nutrition education. She aims to provide research-backed advice to inspire balanced, happy living.
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