Low-calorie frozen meals: checking fat and saturates

Who is choosing a frozen ready meal?

Shoppers keeping fat intake low

If you rely on freezer meals, compare total fat and saturates per 100g as well as calories for the meal you will eat. Calorie-controlled wording alone does not tell you whether a dish is low in fat.

Shoppers comparing single-meal portions

A stated calorie total is useful only when you know whether it covers the whole pack or one serving. Use the per-100g panel to compare meals of different sizes, then check the portion you intend to eat.

Shoppers interested in protein

If protein is another consideration, check its amount per serving without treating a protein claim as evidence of low fat. Total fat, saturates and salt still need their own label checks.

What should you check on the label?

Start with the fat figures if a low-fat meal is the requirement, then check what the entire portion contributes and how it must be prepared.

Priority	What to check	Your needs
Fat and saturates	Compare both per 100g. NHS food-label guidance defines low total fat as 3g or less per 100g and low saturates as 1.5g or less per 100g. Check the whole portion as well.	I want a meal that meets my low-fat requirement, not just one described as calorie controlled.
Calories and portion	Check whether the calorie figure applies to a serving or the entire pack. Use per-100g figures when comparing packs of different weights.	If the pack is my whole meal, I need its whole-pack figure rather than a smaller suggested serving.
Salt	Read salt per serving and per 100g alongside fat and calories. As a product-specific example, Waitrose lists 1.60g salt per serving for the Birds Eye Get Real Protein Mexican Style Chicken Burrito Bowl.	A lower-fat choice still needs to fit the amount of salt I want in that meal.
Protein and ingredients	Compare protein per serving if it matters to you, then read the ingredients and nutrition panel. A protein claim does not establish low fat or low salt.	I may prefer a meal with a stated protein amount, but I do not want that claim to replace the fat checks.
Pack instructions	Read the current pack for allergens, frozen storage directions and the cooking method. Follow its instructions and check that the food is piping hot before serving.	Before cooking, I need instructions that suit my kitchen and allergen information for the pack I have.

Common mistakes when choosing frozen meals

Choosing solely by an “under 500 calories” label

A calorie-based category does not tell you whether an individual meal is low in total fat or saturates.

Use the category to narrow your options, then compare fat and saturates per 100g and check the figures for the whole portion.
Treating “high protein” as a low-fat claim

Protein, fat and salt are different label measures. Waitrose lists 1.60g salt per serving for the Birds Eye Get Real Protein Mexican Style Chicken Burrito Bowl, despite its low per-100g fat figures.

Compare protein only after checking the meal’s total fat, saturates and salt.
Comparing packs of different sizes by totals alone

A larger pack can have a higher total simply because it contains more food; pack totals alone do not show how the meals compare per 100g.

Use per-100g values for comparison, then check the contribution from the portion you will eat.
Relying on an older online listing

Ingredients and nutrition information can change. Iceland advises shoppers to read the physical label rather than rely solely on its online product information.

Check the current pack for nutrition, allergens, storage and cooking instructions before use.

Which retailer ranges are useful starting points?

These retailer categories can help narrow a search, but a range name does not replace the nutrition panel on a particular frozen meal.

Tesco

Tesco Groceries has a frozen “Under 500cal Meals” category that includes Tesco Calorie Controlled dishes.

A calorie-based category offers a starting point for comparing frozen meals.
Check each dish’s total fat and saturates; the category name does not establish that it is low fat.

M&S

M&S describes its Count On Us dishes as calorie controlled and separately lists frozen ready meals.

Count On Us provides a calorie-controlled range to consider.
Confirm that the particular dish is frozen, then check its fat and saturates on the product label.

Waitrose

Waitrose lists frozen ready meals and provides per-100g and per-serving nutrition for its Birds Eye Get Real Protein Mexican Style Chicken Burrito Bowl.

That bowl is listed at 373kcal per serving, with 1.1g fat and 0.2g saturates per 100g.
Its listed salt is 1.60g per serving. Waitrose’s broader Healthy Options labelling does not replace checking an individual frozen meal.

Iceland

Iceland lists an exclusive Slimming World ready-meal range and describes an Iceland-exclusive MyProtein meal range.

The named ranges provide categories in which to look for individual frozen meals.
Check fat and saturates per 100g on the specific pack; a range description does not establish that every dish is low fat.

Sainsbury's

Sainsbury's lists frozen ready meals across several meal types, including a diet and free-from category.

The category helps shoppers browse different types of frozen meal.
A category label does not establish the calories or fat content of an individual dish.

A Joybuy frozen meal option

This chicken tikka option is relevant to shoppers comparing frozen ready meals for a lower-fat eating pattern. Use its current pack label to make the final nutrition and allergen checks.

Myprotein Chicken Tikka 350g

A 350g chicken tikka option for a frozen ready-meal comparison. Check the current pack’s calories, total fat, saturates, salt and allergen information before deciding whether it meets your requirements.

View on Joybuy

Frozen ready meal questions

Does “under 500 calories” mean a frozen meal is low fat?

No. The calorie figure does not establish the meal’s fat content. Check total fat and saturates per 100g: NHS food-label guidance defines low total fat as 3g or less and low saturates as 1.5g or less per 100g.

Should I compare nutrition per serving or per 100g?

Use both. Per-100g figures let you compare meals of different sizes, while serving or whole-pack figures show what the portion you intend to eat contains. Check whether the stated serving is the whole pack.

Is low saturated fat enough to identify a low-fat meal?

No. Check total fat separately, then compare calories and salt for the portion. In its May 2025 review of 1,511 chilled and frozen ready meals from 11 retailers, Action on Salt & Sugar reported that 56% of the meals assessed were high in salt and 42% were high in saturated fat; those findings do not determine the figures for any particular pack.

What should I check before cooking a frozen ready meal?

Read the current pack’s allergen, storage and cooking information. Follow its directions for cooking from frozen or defrosting, as applicable, and check that the food is piping hot before serving.