Prices updated daily — 24 October 2026
Product type overview
tonic water sits within Soft Drinks, part of Drinks. On this page you compare 138 products from 9 UK supermarkets: Aldi, ASDA, Co-op, Iceland, Morrisons, Ocado, Sainsbury's, Tesco and Waitrose. The lowest unit price for tonic water is £0.48/l at ASDA. In total, 7 variants of tonic water are compared (different pack sizes and compositions). All prices are normalised to the same unit (per kilogram, per litre or per piece) so that packs of different sizes can be compared fairly — a larger pack is not automatically the best value. The ranking below shows, per variant, which supermarket currently has the sharpest price, including own-label products alongside national brands. Prices refresh daily from the retailers' own public price lists, so you never see stale offers when planning your weekly shop. Allsupers uses no affiliate links or paid placement; the ranking is purely price-based and updated from public data.
Cheapest tonic water
Compare 138 products across 9 supermarkets
tonic water — compare prices across 9 supermarkets
ASDA
ASDA Indian Tonic Water with a Lemon Flavour Twist Low calorie 1 Litre
1 litre
£0.48/litre
at 1 supermarket
ASDA
ASDA Indian Tonic Water with a Lime Flavour Twist Low Calorie 1 Litre
1 litre
£0.48/litre
at 1 supermarket
ASDA
ASDA Indian Tonic Water with a Lemon Flavour Twist 1 Litre
1 litre
£0.48/litre
at 1 supermarket
ASDA
ASDA Low Calorie Indian Tonic Water 1 Litre
1 litre
£0.48/litre
at 1 supermarket
ASDA
ASDA Indian Tonic Water 1 Litre
1 litre
£0.48/litre
at 1 supermarket
TESCO
Tesco Low Calorie Indian Tonic Water 1Litre
1 litre
£0.49/litre
at 1 supermarket
TESCO
Tesco Indian Tonic Water 1L
1 litre
£0.49/litre
at 1 supermarket
VIVE
Indian Tonic Water
1 litre
£0.49/litre
at 1 supermarket
VIVE
Low Calorie Indian Tonic Water
1 litre
£0.49/litre
at 1 supermarket
Co-op
Co-op Low Calorie Indian Tonic Water 1ltr
1 litre
£0.49/litre
at 1 supermarket
TESCO
Tesco Low Calorie Indian Tonic Water With Lemon 1Lt
1 litre
£0.55/litre
at 1 supermarket
TESCO
T.Low Calorie Indian Tonic Water With Elderflower 1L
1 litre
£0.55/litre
at 1 supermarket
TESCO
Tesco Low Calorie Indian Tonic Water With Lime 1 Litre
1 litre
£0.55/litre
at 1 supermarket
Morrisons
Morrisons Diet Indian Tonic Water 1L
1 litre
£0.90/litre
at 1 supermarket
Morrisons
Morrisons Indian Tonic Water
1 litre
£0.90/litre
at 1 supermarket
Morrisons
Morrisons Diet Tonic Water with a Hint of Lime
1 litre
£0.90/litre
at 1 supermarket
Morrisons
Morrisons Low Calorie Tonic Water with Lemon
1 litre
£0.90/litre
at 1 supermarket
Morrisons
Morrisons Indian Tonic Water With a Hint of Lemon
1 litre
£0.90/litre
at 1 supermarket
Waitrose Ltd
Waitrose Indian Tonic Water Sugar Free
1 litre
£0.95/litre
at 1 supermarket
Waitrose Ltd
Waitrose Indian Tonic Water
1 litre
£0.95/litre
at 1 supermarket
Waitrose Ltd
Waitrose Indian Tonic Water with Lemon Sugar Free
1 litre
£0.95/litre
at 1 supermarket
Waitrose Ltd
Waitrose Sugar Free Mediterranean Tonic Water
1 litre
£0.95/litre
at 1 supermarket
Sainsbury's
Sainsbury's Diet Indian Tonic Water 1L
1 litre
£0.95/litre
at 1 supermarket
Sainsbury's
Sainsbury's Indian Tonic Water 1L
1 litre
£0.95/litre
at 1 supermarket
Sainsbury's
Sainsbury's Diet Indian Tonic Water with Lemon 1L
1 litre
£0.95/litre
at 1 supermarket
Sainsbury's
Sainsbury's Diet Indian Tonic Water with Lime 1L
1 litre
£0.95/litre
at 1 supermarket
Sainsbury's
Sainsbury's 1L Diet Indian Tonic Water with Elderflower
1 litre
£0.95/litre
at 1 supermarket
M&S
M&S Diet Indian Tonic Water
1 litre
£0.95/litre
at 1 supermarket
M&S
M&S Indian Tonic Water
1 litre
£0.95/litre
at 1 supermarket
M&S
M&S Diet Indian Tonic Water with Lemon
1 litre
£0.95/litre
at 1 supermarket
Schweppes
Schweppes Indian Tonic Water 1L Bottle
1 litre
£1.00/litre
at 6 supermarkets
Schweppes
Schweppes Slimline Elderflower Tonic Water 1L Bottle
1 litre
£1.00/litre
at 6 supermarkets
Schweppes
Schweppes Slimline Tonic Water 1L Bottle
1 litre
£1.00/litre
at 8 supermarkets
Schweppes
Schweppes Slimline Grapefruit Tonic Water 1L Bottle
1 litre
£1.00/litre
at 1 supermarket
Schweppes
Schweppes Slimline Tonic Water 1L
1 litre
£1.50/litre
at 1 supermarket
Schweppes
Schweppes Indian Tonic Water
1 litre
£1.50/litre
at 1 supermarket
Unbranded
Schweppe Slimline Tonic With Grapefruit 1L
1 litre
£1.55/litre
at 1 supermarket
RIDGE VALLEY
Light Mediterranean Tonic Water 8 Pack
1.2 litre
£1.66/litre
at 1 supermarket
RIDGE VALLEY
Premium Indian Tonic Water 8 Pack
1.2 litre
£1.66/litre
at 1 supermarket
ASDA
ASDA Low Calorie Indian Tonic Water 6 x 250ml
1.5 litre
£1.71/litre
at 1 supermarket
TESCO
Tesco Low Calorie Indian Tonic Water 6 x 250ml
1.5 litre
£1.73/litre
at 1 supermarket
Schweppes
Schweppes Tonic Water
1 litre
£1.78/litre
at 1 supermarket
Sainsbury's
Sainsbury's 6 x 250ml Indian Tonic Water
1.5 litre
£1.83/litre
at 1 supermarket
Sainsbury's
Sainsbury's 6 x 250ml Diet Indian Tonic Water
1.5 litre
£1.83/litre
at 1 supermarket
Eden Bay
Eden Bay Premium Mediterranean Tonic Water 8 x 150ml
1.2 litre
£1.88/litre
at 1 supermarket
Eden Bay
Eden Bay Premium Indian Tonic Water 8 x 150ml
1.2 litre
£1.88/litre
at 1 supermarket
Eden Bay
Eden Bay Premium Light Tonic Water 8 x 150ml
1.2 litre
£1.88/litre
at 1 supermarket
SCHWEPPES
Schweppes Slimline Tonic Water With Lemon Zest 1L
1 litre
£1.90/litre
at 4 supermarkets
Schweppes
Schweppes Tonic Water 1L
1 litre
£1.90/litre
at 1 supermarket
Waitrose Ltd
Waitrose Sugar Free Indian Tonic Water Cans
1.5 litre
£2.20/litre
at 1 supermarket