Syns in Morrisons Fish Cakes: Complete Slimming World Guide

Updated on 
9 March, 2026

Do Morrison's Fish Cakes Have A Lot Of Syns?

If you fancy an easy weeknight dinner you might be tempted to have some Morrison's fish cakes for a quick meal, but since these cakes are breaded and have flavourings, you will need to make sure you are tracking their syns on the slimming world plan.

Morrison's fish cakes have 2 syns per fish cake making them a great low syn meal to have for an easy dinner which is high in protein. 

Down below we've composed a small guide which will discuss why Morrison's fish cakes are low in syns, which fish is syn free on slimming world and some low syn alternatives, we've also included a slimming world friendly fish cake recipe if you feel like getting creative in the kitchen.

Why Are Morrison's Fish Cakes Low In Syns?

Morrison's fish cakes are low in syns thanks to their mainly high fish content with the cod, haddock and salmon all being syn free.

The two syns for these fish cakes comes from the cheese centre and the breaded outer crust, but their low syn values mean you could have up to four of the fish cakes until you reach your daily slimming world allowance!

Low Syn Fish Cake Alternatives

Although not as low in syns as Morrison's fish cakes, you can still find some other fishcakes on the market which have under your daily syn allowance.

We've listed a few below to help you out.

  • Tesco Finest 2 Cod & Parsley Fishcakes 290G - 11 syns per fishcake.
  • Youngs 4 Omega 3 Fish Cakes 200G - 4 syns per fish cake.
  • Tesco 2 Smoked Haddock Fishcakes 270G - 10.5 syns per fish cake.
  • Tesco Finest 2 Salmon & Hollandaise Fishcakes 290G - 15 syns per fishcake.
  • M&S 2 Thai Style Fishcakes Frozen - 11 syns per fishcake.
  • M&S 2 Smoked Haddock Fishcakes Melt in the Middle - 12 syns per fishcake.
  • M&S 2 Cod Fillet Fishcakes - 11 syns per fishcake.
  • Tesco Finest 2 Cod & Chorizo Fishcakes 290G - 13 syns per fish cake.
  • Tesco Finest 2 Smoked Haddock Fishcakes 290G - 13 syns per fish cake.
  • Tesco Finest 2 Salmon Spinach & Lemon Fishcakes 290G - 15 syns a fish cake.
  • Tesco Finest 2 Thai Prawn Fishcakes 290G - 10 syns per fishcake.
  • Tesco Finest 2 Cod Sweet Potato & Chilli Fishcakes 290G - 10 syns per fishcake.
  • Tesco 2 Cod Fishcakes With Lemon & Herb 270G - 10 syns per fishcake.

Our SW Friendly Fish Cake Recipe

For people who feel like saving even more syns, why not try making your own slimming world fish cakes at home?

We've listed the recipe details down below which makes SYN FREE fish cakes!

Ingredients

  • Two big potatoes.
  • Cooking spray.
  • One onion.
  • Two small garlic cloves.
  • 150g of cod.
  • 150g of haddock fillet.
  • 70g of peas frozen.
  • 3 tsp of mint and a tablespoon of parsley,
  • Lemon juice.
  • 2 tbsp fat-free natural Greek yoghurt

Method

  1. First of all steam your onions, potatoes and garlic until tender for about 10 minutes then mash the potatoes up in a separate bowl.
  2. Steam your fish for around 10 minutes until it starts to flake, cooking the peas in the meantime.
  3. Add mint and lemon juice to your peas once cooked and mash.
  4. Heat your oven to around gas mark 7 and chop your onion and garlic and add them to your potatoes with your yoghurt, parsley and some seasoning with your flaked fish too.
  5. Make four even bowls and squish your mashed pea mixture into each one to hide it.
  6. Bake for around 20 minutes on the tray until cooked through.

Last Words

Overall, Morrison's fish cakes only have two syns in for each one making them a great low syn snack or easy dinner which won't stall your weight loss, we recommend serving these with a salad or slimming world chips. You could also try making your slimming world chips at home to save even more syns.

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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