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Cheapest Tonic & Mixers in the UK

Prices updated 14 November 2026 · 219 products across 7 supermarkets

The best-value tonic & mixers in the UK right now is ASDA Indian Tonic Water with a Lemon Flavour Twist Low calorie 1 Litre at Asda — £0.48/litre (£0.48).
219Products Compared
7Supermarkets
£0.48Lowest /Litre

We compare tonic & mixers across all 9 major UK supermarkets: Tesco, Asda, Sainsbury's, Morrisons, Waitrose, Aldi, M&S, Ocado and Iceland — and rank by price per unit so you can see where tonic & mixers is genuinely cheapest. Prices update daily.

1ASDA Indian Tonic Water with a Lemon Flavour Twist Low calorie 1 LitreASDA Indian Tonic Water with a Lemon Flavour Twist Low calorie 1 LitreAsdaBest value£0.48/litre£0.482ASDA Indian Tonic Water with a Lime Flavour Twist Low Calorie 1 LitreASDA Indian Tonic Water with a Lime Flavour Twist Low Calorie 1 LitreAsda£0.48/litre£0.483ASDA Low Calorie Classic Bitter Lemon 1 LitreASDA Low Calorie Classic Bitter Lemon 1 LitreAsda£0.48/litre£0.484Tesco Low Calorie Indian Tonic Water With Lemon 1LtTesco Low Calorie Indian Tonic Water With Lemon 1LtTesco£0.75/litre£0.755Tesco Low Calorie Soda Water With Lime 1LTesco Low Calorie Soda Water With Lime 1LTesco£0.75/litre£0.756Tesco Low Calorie Indian Tonic Water With Lime 1 LitreTesco Low Calorie Indian Tonic Water With Lime 1 LitreTesco£0.75/litre£0.757Tesco Low Calorie Indian Tonic Water 1LitreTesco Low Calorie Indian Tonic Water 1LitreTesco£0.75/litre£0.758T.Low Calorie Indian Tonic Water With Elderflower 1LT.Low Calorie Indian Tonic Water With Elderflower 1LTesco£0.75/litre£0.759Tesco Indian Tonic Water 1LTesco Indian Tonic Water 1LTesco£0.75/litre£0.7510Tesco Soda Water 1LitrTesco Soda Water 1LitrTesco£0.75/litre£0.7511Morrisons Diet Tonic Water with a Hint of Lime 1LMorrisons Diet Tonic Water with a Hint of Lime 1LMorrisons£0.90/litre£0.9012Morrisons Diet Indian Tonic Water 1LMorrisons Diet Indian Tonic Water 1LMorrisons£0.90/litre£0.9013Morrisons Indian Tonic Water 1LMorrisons Indian Tonic Water 1LMorrisons£0.90/litre£0.9014Morrisons Low Calorie Tonic Water with Lemon 1LMorrisons Low Calorie Tonic Water with Lemon 1LMorrisons£0.90/litre£0.9015Morrisons Indian Tonic Water With a Hint of Lemon 1LMorrisons Indian Tonic Water With a Hint of Lemon 1LMorrisons£0.90/litre£0.9016Sainsbury's Diet Indian Tonic Water with Lemon 1LSainsbury's Diet Indian Tonic Water with Lemon 1LSainsbury's£0.95/litre£0.9517Waitrose Soda WaterWaitrose Soda WaterWaitrose£0.95/litre£0.9518Waitrose Indian Tonic Water Sugar FreeWaitrose Indian Tonic Water Sugar FreeWaitrose£0.95/litre£0.9519Waitrose Indian Tonic Water with Lemon Sugar FreeWaitrose Indian Tonic Water with Lemon Sugar FreeWaitrose£0.95/litre£0.9520Sainsbury's Diet Indian Tonic Water with Lime 1LSainsbury's Diet Indian Tonic Water with Lime 1LSainsbury's£0.95/litre£0.9521Sainsbury's Diet Indian Tonic Water 1LSainsbury's Diet Indian Tonic Water 1LSainsbury's£0.95/litre£0.9522Sainsbury's Indian Tonic Water 1LSainsbury's Indian Tonic Water 1LSainsbury's£0.95/litre£0.9523Sainsbury's 1L Diet Indian Tonic Water with ElderflowerSainsbury's 1L Diet Indian Tonic Water with ElderflowerSainsbury's£0.95/litre£0.9524Sainsbury's Soda Water 1LSainsbury's Soda Water 1LSainsbury's£0.95/litre£0.95
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Cheapest Tonic & Mixers: FAQ

Where is the cheapest tonic & mixers in the UK?

Right now the best value tonic & mixers is ASDA Indian Tonic Water with a Lemon Flavour Twist Low calorie 1 Litre at Asda, £0.48 (£0.48/litre). SmartShelf ranks tonic & mixers by price per unit across 7 supermarkets, updated daily.

Which supermarket is cheapest for tonic & mixers?

We compare tonic & mixers across Tesco, Sainsbury's, Asda, Morrisons, Waitrose, Aldi, M&S, Ocado and Iceland. Today Asda has the cheapest option, but the ranking updates every day as prices change.

How does SmartShelf compare tonic & mixers prices?

We list each product's price per unit (£/kg, £/litre or per item) so you compare like for like, and we show loyalty prices such as Clubcard and Nectar where available. Free, with no sign-up.