Figures from Sainsbury’s product page, collected by Boone. Free sugar calculated by Boone. Last checked 17 October 2026. Data checks are led by Murray Dare.
Sainsbury’s gives salt as less than 0.5g per 100g, so Boone uses 0.5g, the upper bound.
Colours use the Food Standards Agency front-of-pack thresholds per 100g. RI is the adult reference intake.
One bar (20.7g) of KitKat Dark 2 Finger. Figures from the retailer’s pack panel; portion figures calculated by Boone. How
Sugar in milk and whole or dried fruit is not free sugar. NHS →
The NHS free sugar limit is 19g a day at age 4 to 6, 24g at 7 to 10 and 30g from 11. There is no limit for under 4s: they should avoid free sugar.
#3 of 40 Nestlé chocolate for least free sugar per portion.
The 2018 model indicates this portion is less healthy: it scores 18, at or above the line of 4.
Higher is less healthy; 4 or more would be classed as less healthy under this model. How the score works →
#2 of 40 Nestlé chocolate for this score (lower is better).
18 ingredients; 3 are additives or industrial ingredients (orange).
Nestlé adds vitamins and minerals to this product. They are counted as one ingredient and are not a marker of ultra-processing.
Group 4 because the ingredient list includes the industrial ingredients below. Added vitamins and minerals are not counted. How NOVA works →
Per 100g as sold, and per portion.
| Per | 100g | One bar (20.7g) |
|---|---|---|
| Energy | 502 kcal | 104 kcal |
| Fat | 25.8g | 5.3g |
| of which saturates | 14.2g | 2.9g |
| Carbohydrate | 58.6g | 12.1g |
| of which sugars | 44.6g | 9.2g |
| Free sugar (Boone) | 44.6g | 9.2g |
| Fibre | 5.5g | 1.1g |
| Protein | 5.6g | 1.2g |
| Salt | 0.5g | 0.1g |
104 kcal in one bar (20.7g). Per 100g it is 502 kcal.
One bar (20.7g) has 9.2g of sugar, and Boone calculates 9.2g of it is free sugar, about 2.3 teaspoons. That is 49% of the 19g daily limit for a child aged 4 to 6 and 31% of the 30g adult limit.
One bar (20.7g) gives 1.1g of fibre and 49% of a 4 to 6 year old’s free sugar limit. Nestlé Blue Riband has 9.1g of free sugar per portion.
Yes, NOVA group 4. The ingredient list includes emulsifiers, modified starches and sugars, flavourings.
18 on the UK Nutrient Profiling Model 2018, calculated by Boone per 100g. Scores run from -20 to 40; 4 or more would be classed as less healthy.
Source. Sainsbury’s product page, nutrition panel and ingredient list, per 100g as sold.
Collected. Copied by Boone from the Sainsbury’s product page. Nestlé’s own page does not give full per 100g figures for this product. Data checks are led by Murray Dare.
Calculated by Boone. Free sugar, portion figures, traffic lights and the nutrient profile score. Labelled where they appear.
Limits. NHS free sugar and salt limits by age; UK reference intakes for adults.
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