Heinz
on Slimming World
Heinz is one of the most SW-friendly big brands in the UK, mostly because they happen to make several products that are either Free outright or very low in syns. The headline product is the No Added Sugar Tomato Ketchup, which is completely Free on plan and tastes remarkably close to the regular version. If you haven't made the switch yet, this is the single easiest win in your whole kitchen.
Plain Heinz Baked Beanz are also Free, which makes them one of the most convenient high-protein Free foods available. Beans on toast using your HexB bread is a genuinely filling, nutritious meal that takes five minutes and costs almost nothing — it's not fancy, but it works, and sometimes that's exactly what you need.
The soups are where it gets more nuanced. The classic Tomato Soup is a comfortable 2.5 syns per 200g, which is low enough to be a practical lunch option paired with HexB bread. The Weight Watchers range (still sold under the Heinz umbrella in many shops) offers some of the lowest-syn hot lunches available, worth knowing about for busy days. Where Heinz catches people out is the condiment range — regular ketchup, salad cream, and especially mayonnaise all carry syns that add up quickly if you're heavy-handed with them.
Free Products
| Product | Portion | Syns | Kcal | Notes | Buy |
|---|---|---|---|---|---|
| Heinz No Added Sugar Tomato Ketchup (15g serving) | 1 tbsp (15g) | FREE | 4 | The single best Heinz swap — tastes nearly identical to regular ketchup but completely Free | Amazon |
| Heinz Baked Beanz in Tomato Sauce (200g) | 200g (half tin) | FREE | 164 | Plain baked beans are free — a protein and fibre win | — |
Heinz No Added Sugar Tomato Ketchup (15g serving)
FREE1 tbsp (15g)
4 kcal
The single best Heinz swap — tastes nearly identical to regular ketchup but completely Free
View on Amazon →Heinz Baked Beanz in Tomato Sauce (200g)
FREE200g (half tin)
164 kcal
Plain baked beans are free — a protein and fibre win
Condiments (Synned)
| Product | Portion | Syns | Kcal | Notes |
|---|---|---|---|---|
| Heinz Tomato Ketchup (15g serving) | 1 tbsp (15g) | 1 syn | 18 | 1 syn per tbsp — switch to No Added Sugar and spend those syns elsewhere |
| Heinz HP Sauce (15g serving) | 1 tbsp (15g) | 1 syn | 19 | — |
| Heinz Salad Cream (15ml serving) | 1 tbsp (15ml) | 1.5 syns | 28 | — |
| Heinz Seriously Good Mayonnaise (15g serving) | 1 tbsp (15g) | 5 syns | 103 | — |
| Heinz Lighter than Light Mayonnaise (15g serving) | 1 tbsp (15g) | 1 syn | 24 | — |
Heinz Tomato Ketchup (15g serving)
1 syn1 tbsp (15g)
18 kcal
1 syn per tbsp — switch to No Added Sugar and spend those syns elsewhere
Heinz HP Sauce (15g serving)
1 syn1 tbsp (15g)
19 kcal
Heinz Salad Cream (15ml serving)
1.5 syns1 tbsp (15ml)
28 kcal
Heinz Seriously Good Mayonnaise (15g serving)
5 syns1 tbsp (15g)
103 kcal
Heinz Lighter than Light Mayonnaise (15g serving)
1 syn1 tbsp (15g)
24 kcal
Soups
| Product | Portion | Syns | Kcal | Notes |
|---|---|---|---|---|
| Heinz Classic Tomato Soup (200g) | 200g (half tin) | 2.5 syns | 90 | Warming, low-syn option — pair with HexB bread for a proper lunch |
| Heinz Cream of Chicken Soup (200g) | 200g (half tin) | 3.5 syns | 104 | — |
| Heinz Weight Watchers Vegetable Soup (295g) | 295g (full tin) | 1.5 syns | 68 | One of the lowest-syn hot lunches you can have |
| Heinz Weight Watchers Tomato Soup (295g) | 295g (full tin) | 2 syns | 74 | — |
Heinz Classic Tomato Soup (200g)
2.5 syns200g (half tin)
90 kcal
Warming, low-syn option — pair with HexB bread for a proper lunch
Heinz Cream of Chicken Soup (200g)
3.5 syns200g (half tin)
104 kcal
Heinz Weight Watchers Vegetable Soup (295g)
1.5 syns295g (full tin)
68 kcal
One of the lowest-syn hot lunches you can have
Heinz Weight Watchers Tomato Soup (295g)
2 syns295g (full tin)
74 kcal
Shop on Amazon
Products mentioned in this guide, available on Amazon UK.
Heinz No Added Sugar Tomato Ketchup (15g serving)
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Frequently asked questions
Is Heinz ketchup free on Slimming World?
Regular Heinz Tomato Ketchup is not Free — it's 1 syn per 15g tablespoon. However, the Heinz No Added Sugar Tomato Ketchup is completely Free on Slimming World at just 4 calories per serving. If you use ketchup regularly with your meals, switching to the No Added Sugar version is one of the easiest syn savings you can make. The taste difference is minimal and most people can't tell them apart in a blind test.
Are Heinz baked beans Free on Slimming World?
Yes — plain Heinz Baked Beanz in Tomato Sauce are Free on Slimming World. They're a great source of protein and fibre and one of the quickest Free meals you can make. A half tin (200g) on two slices of wholemeal toast using your Healthy Extra B is a filling, balanced meal that takes about five minutes to prepare. Just make sure you're using the plain variety — any version with added sausages or cheese-sauce variants will have syn values.
How many syns is Heinz mayonnaise?
Heinz Seriously Good Mayonnaise is 5 syns per 15g tablespoon, making it one of the most syn-dense condiments you can add to a meal. If you love mayo, switch to the Heinz Lighter than Light version, which is just 1 syn for the same portion size. You still get that creamy texture and flavour without the heavy syn spend. This single swap can save you 4 syns per tablespoon, which adds up significantly if you use mayo daily.
What is the lowest syn Heinz soup?
The Heinz Weight Watchers Vegetable Soup is one of the lowest-syn soups available at 1.5 syns for a full 295g tin. The Weight Watchers Tomato Soup is also excellent at 2 syns for a full tin. These are genuinely useful hot lunch options, especially in winter. Pair either one with your Healthy Extra B bread allowance for a complete, filling meal under 3 syns total. The classic Tomato Soup is 2.5 syns per 200g if you prefer that to the lighter range.
Is Heinz salad cream lower in syns than mayonnaise?
Yes — Heinz Salad Cream is significantly lower in syns than mayonnaise at 1.5 syns per 15ml, compared to 5 syns for the same amount of Heinz Seriously Good Mayonnaise. Salad cream has a tangier, lighter flavour profile that works well with salads and sandwiches. It's not an identical swap but if you enjoy the flavour, it's a good syn-saving alternative. The Lighter than Light Mayo at 1 syn per tablespoon is also worth considering if you specifically need the creamier texture.
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Syn values are based on publicly available nutritional data and community-verified figures. Always confirm with the official Slimming World app, as values can change. Updated 2026-04-26.