Small Diet Coke Price at McDonald's (2026)
A Small Diet Coke costs £1.99 at McDonald's in United Kingdom (updated August 2026).
A Small Diet Coke® at McDonald's costs £1.99 in the United Kingdom as of August 2026. That's about 2% below the average McDonald's Saver Menu® item — the 2nd-cheapest of 6 we track. It has 1 calories. It's available at around 41 McDonald's locations across the United Kingdom. Prices are sourced from delivery platforms and refreshed regularly. Browse the latest McDonald's Saver Menu® prices and find the cheapest pick on MenuPriceToday.
How this compares in Saver Menu®
6 items tracked| This item | £1.99 |
| Saver Menu® median | £2.04 |
| Cheapest — Small Coca-Cola® Zero Sugar | £1.99 |
| Most expensive — Regular White Coffee | £2.09 |
| vs Saver Menu® median | −2% |
Nutrition
0%
Daily Value
Ingredients⌄
Diet Coke Ingredients: Carbonated Water, Colour (Caramel), Sweeteners (Aspartame*, Acesulfame K), Flavourings (including Caffeine), Phosphoric Acid, Citric Acid, Preservative (Sodium Benzoate), Acidity Regulator (Sodium Citrate), Anti-foaming Agent (Dimethyl Polysiloxane). *contains a source of Phenylalanine. We produce our food in kitchens where allergens are handled by our people, and where equipment and utensils are used for multiple menu items, including those containing allergens. Although your meal is prepared with care, we cannot guarantee it will be allergen free, even after ingredient
% DV = % of daily value based on a 2,000 kcal diet. Nutrition data from Mcdonalds's official information. For informational purposes only.
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Ingredients
Diet Coke Ingredients: Carbonated Water, Colour (Caramel), Sweeteners (Aspartame*, Acesulfame K), Flavourings (including Caffeine), Phosphoric Acid, Citric Acid, Preservative (Sodium Benzoate), Acidity Regulator (Sodium Citrate), Anti-foaming Agent (Dimethyl Polysiloxane). *contains a source of Phenylalanine. We produce our food in kitchens where allergens are handled by our people, and where equipment and utensils are used for multiple menu items, including those containing allergens. Although your meal is prepared with care, we cannot guarantee it will be allergen free, even after ingredient