10 Best Tonic Water Flavours in The UK

Last updated on 16/07/2025

Advertising disclosure

SodaStream Flavours Classic Diet Tonic Mix, Fizzy Drink Maker Concentrate, Aspartame Free SodaStream Syrup, Sparkling Water Flavouring, Slimline Water for Gin & Tonic - 6x 440ml Multi Pack

Free Shipping

Why We Love It

Eco-friendly beverage solution.
Endless fizzy delights.
Natural flavour satisfaction.

Main Highlights

Flavoured drinks for every event: Simply carbonate your water using your SodaStream and then add the Diet Tonic mix
Be the change: Reduce your plastic waste and help the environment, as each 440 ml bottle makes up to 9 litres of deliciously drinkable pop
Favourite flavours on tap: Perfect for parties to create tasty tonic. Enjoy SodaStream refreshment at your fingertips
Taste test: New and improved, naturally flavoured Diet Tonic soda syrup to make a delicious GandT. Contains no aspartame
Instructions: Simply carbonate your water using SodaStream and then add the Diet Tonic flavour. Includes 6 x 440 ml bottles

Fentimans Connoisseurs Tonic Water - Botanically Brewed Water - Infused with Natural Botanicals and Quinine - Low Calorie, Gluten Free and Vegan Friendly Soft Drinks - 8 x 500ml

Free Shipping

Why We Love It

Botanically brewed for drinks.
Natural ingredients, high quality.
No artificial additives, pure.

Main Highlights

🌱 BOTANICALLY BREWED - This versatile tonic has been specially created with a delicate infusion of natural botanicals and quinine for a clean and balanced taste. The delicate flavour profile enhances and amplifies the beautiful botanicals of premium spirits, letting the spirit be the hero.
🌱 NATURAL INGREDIENTS - Our botanical brewing process often involves a method of extracting flavors from herbs, roots, and other natural ingredients, Fentimans tonic water is made with care and attention to quality.
🌱 GLUTEN FREE - Fentimans Connoisseurs Tonic Water caters to individuals with specific dietary preferences or restrictions, ensuring that those with dietary concerns can enjoy the tonic without compromise.
🌱 NO ADDITIVES - Fentimans tonic water contains no artificial flavours, preservatives, colours, or sweeteners. Reassuring those who are seeking a more natural and authentic beverage, free from synthetic additives.
🌱 PERFECT MIXER - As a premium tonic water, it is specifically designed to elevate the experience of spirits such as gin, vodka, and spritzers. An ideal companion for premium spirits.

Sophisticated citrusy flavor profile.
Long-lasting fizz enhances drinks.
Natural ingredients for guilt-free enjoyment.

Main Highlights

SOPHISTICATED & CITRUSY: Carefully balanced zesty citrus, ripe sugar beets, and carefully sourced cinchona bark extract. Crafted for discerning drinkers looking to elevate their spirit and mixer offerings, delivering a sophisticated and refreshing fizz.
LONGER LASTING FIZZ: Fizzier for longer thanks to our unique steel crown cap. The extra fizz boosts the flavour of every drink. Better Bubbles, Better Flavour, Better Drinks.
LIGHT & NATURAL: Naturally perfect ingredients with 34 calories and only 7.9g sugar per 100ml ensures the best premium drinking experience. Vegetarian / Vegan friendly / Gluten Free.
LOVED BY EXPERTS: Today Franklin & Sons continues to be recognised for its taste, quality and value at top industry awards and loved by those at home, or behind the bar.
HERITAGE YOU CAN TASTE: Only the finest ingredients used to give a natural tonic experience. First created in 1886, Franklin & Sons is one of the last remaining truly independent mixer brands.

Fever-Tree Tonic Water Variety Pack 2x12x150ml (Total 24 cans)

Free Shipping

Why We Love It

Perfect for vodka or gin.
Includes best-selling flavors.
Great for any party.

Main Highlights

Pack Contains:Fever-Tree Light Mediterranean Tonic Water (2x3x150ml)Fever-Tree Rhubarb & Raspberry Tonic Water (2x3x150ml)Fever-Tree Light Tonic Water (2x3x150ml)Fever-Tree Light Elderflower Tonic Water (2x3x150ml)
Fever-Tree Variety Pack is ideally Paired with Vodka or Gin
The perfect Fever-Tree party pack
Variety Pack contains Fever-Tree's best selling flavours

DOUBLE DUTCH Premium Double Lemon Mixer (24 x 200ml Bottles) - Low Calorie, Diet Tonic Water for Gin, Tequila, Vodka, Rum, Cocktails | Vegan Friendly Soft Drink Perfect Mixer

Free Shipping

Why We Love It

Crafted by gin enthusiasts.
Bold and unique flavor pairings.
No artificial ingredients included.

Main Highlights

𝗭𝗘𝗦𝗧𝗬 𝗗𝗢𝗨𝗕𝗟𝗘 𝗟𝗘𝗠𝗢𝗡 𝗙𝗟𝗔𝗩𝗢𝗨𝗥 - Our tonic water for gin combines twice the lemon, twice the zing – a citrus bomb of sharp juice and sweet zest, made to wake up your taste buds.
𝗟𝗢𝗪-𝗖𝗔𝗟𝗢𝗥𝗜𝗘 - 𝗢𝗡𝗟𝗬 𝗡𝗔𝗧𝗨𝗥𝗔𝗟 𝗜𝗡𝗚𝗥𝗘𝗗𝗜𝗘𝗡𝗧𝗦 - Just the good stuff: no artificial sweeteners, low in calories, and bursting with natural flavour. Each one of our diet tonic bottles contains just 19 kcal per 100ml.
𝗣𝗘𝗥𝗙𝗘𝗖𝗧 𝗠𝗜𝗫𝗘𝗗 𝗢𝗥 𝗢𝗡 𝗜𝗧𝗦 𝗢𝗪𝗡 - Expertly balanced to complement your favourite spirit, elevate cocktails, or deliver peak refreshment all on its own – straight from the can, no extras needed - okay, a little ice never hurt.
𝗗𝗢𝗨𝗕𝗟𝗘 𝗗𝗨𝗧𝗖𝗛 𝗧𝗪𝗜𝗡 & 𝗧𝗢𝗡𝗜𝗖𝗦 - Born in the Netherlands – the home of gin – our twin founders, Joyce and Raissa knew a great drink is only as good as its mixer. So they set out to create bold, unexpected flavour pairings that don’t just complement your drink – they define it!
𝗪𝗘'𝗥𝗘 𝗔 𝗣𝗥𝗢𝗨𝗗 𝗕𝗖𝗢𝗥𝗣 - As a certified B Corp, we’re committed to doing business for good – from partnering with ClimatePartner on carbon reduction to sourcing responsibly and supporting social impact initiatives.

Fever-Tree Indian Tonic Water 8 x 150 ml (Pack of 3 Total 24 Cans)

Free Shipping

Why We Love It

Value for money.
Excellent product quality.
Great hydration solution.

Main Highlights

WATER
Value for money
Good product with excellent quality

THE LONDON ESSENCE CO.

The London Essence, Co. Blood Orange & Elderflower Tonic, Premium Cocktail Mixer, 200ml, Pack of 24 bottles, No Artificial Colours Preservatives or flavours, Low Calorie

14% OffFree Shipping

Why We Love It

Exquisite taste and aroma.
Low in calories.
No artificial sweeteners.

Main Highlights

EXQUISITE TASTE & AROMA - Bitter and tangy orange notes are balanced by rich blood orange oils and a hint of elderflower distillate for a floral and honeyed finish
DISTILLED BOTANICAL ESSENCE - Rich and tangy blood orange oils and a bitter orange tincture are artfully blended to build the base to which London Essence Co. add a floral essence distillate derived from elderflowers
LOW IN CALORIES - With less than 20 calories per 100ml, be prepared to indulge in a delicately light and sophisticated mixer perfect for any diet
NO ARTIFICIAL SWEETENERS - As with the rest of The London Essence Co. collection, The London Essence Co. tonic water is sweetened naturally with fructose
ACCENTUATES THE FINEST SPIRITS - Pairs perfectly with juniper gins, grape or rye based vodkas, and reposado tequilas

THE LONDON ESSENCE CO.

The London Essence, Co. Original Indian Tonic, Premium Cocktail Mixer, 150ml, Pack of 24 cans, No Artificial Colours Preservatives or flavours, Low Calorie

Free Shipping

Why We Love It

Exquisite taste and aroma.
Low in calories.
No artificial sweeteners.

Main Highlights

EXQUISITE TASTE & AROMA - Lemon peel extract, and cold pressed lime oils, combine with aromatic calamansi to deliver a unique citrus note, layered with a hint of chinotto and a distilled juniper essence to deliver a pleasantly bitter tonic finish
DISTILLED BOTANICAL ESSENCE - Juniper berries are steeped prior to distillation to create our unique essence, and are combined with a variety of citrus notes, including aromatic calamansi, for an almost tropical edge
LOW IN CALORIES - With each expression at under 20 calories per 100ml and low in sugar at under 4g per 100ml, be prepared for a delicately light and sophisticated mixer
NO ARTIFICIAL SWEETENERS - As with the rest of The London Essence Co. collection, the London Essence Co. tonic water is sweetened naturally with fructose
ACCENTUATES THE FINEST SPIRITS - Simply pair with your preferred premium gin or try with a dark rum for a contemporary paring

Fever-Tree Refreshingly Light Indian Tonic Water, 150ml, 8 Count (Pack of 3) (Total 24 cans)

6% OffFree Shipping

Why We Love It

50% fewer calories tonic.
Finest naturally sourced ingredients.
Pairs perfectly with gins.

Main Highlights

THIS PACK CONTAINS 24x150ml cans of Fever-Tree Refreshingly Light Indian Tonic Water. Each can contains 15 kcal per 100ml & 50% fewer calories than our Premium Indian Tonic Water.
FEVER-TREE REFRESHINGLY LIGHT INDIAN TONIC WATER is made using the finest naturally sourced ingredients and contains no artificial sweeteners or colours. It is a blend of subtle botanical flavours with spring water and the highest-quality quinine which gives it the distinctively clean, crisp character of Indian Tonic Water, but lower in calories.
FEVER-TREE REFRESHINGLY LIGHT TONIC WATER pairs perfectly all with classic London Dry gins.
FEVER-TREE began in 2003 when Charles and Tim set out to put quality back into mixers using only the highest quality ingredients. This mindset led them on an 18-month adventure from the archives of the British Library to the Democratic Republic of Congo in pursuit of the best naturally sourced ingredients, because after all…
IF ¾ OF YOUR DRINK IS THE MIXER, MIX WITH THE BEST

DOUBLE DUTCH Premium Cucumber and Watermelon Tonic Water (24 x 150ml Cans) - Low Calorie, Diet Tonic Water for Gin and Cocktails | Gluten Free, Vegan Friendly Soft Drink Perfect Mixer

Free Shipping

Why We Love It

Flavourful and versatile mixers.
No artificial ingredients used.
Perfect for summer cocktails.

Main Highlights

𝗙𝗥𝗘𝗦𝗛 𝗖𝗨𝗖𝗨𝗠𝗕𝗘𝗥 & 𝗪𝗔𝗧𝗘𝗥𝗠𝗘𝗟𝗢𝗡 𝗙𝗟𝗔𝗩𝗢𝗨𝗥 - Our tonic water for gin delivers a mouthwatering mix of garden-fresh cucumber and sweet, ripe watermelon – light, lively, and utterly sip-worthy.
𝗟𝗢𝗪-𝗖𝗔𝗟𝗢𝗥𝗜𝗘 - 𝗢𝗡𝗟𝗬 𝗡𝗔𝗧𝗨𝗥𝗔𝗟 𝗜𝗡𝗚𝗥𝗘𝗗𝗜𝗘𝗡𝗧𝗦 - Just the good stuff: no artificial sweeteners, low in calories, and bursting with natural flavour. Each one of our diet tonic bottles contains just 19 kcal per 100ml.
𝗣𝗘𝗥𝗙𝗘𝗖𝗧 𝗠𝗜𝗫𝗘𝗗 𝗢𝗥 𝗢𝗡 𝗜𝗧𝗦 𝗢𝗪𝗡- Expertly balanced to complement your favourite spirit, elevate cocktails, or deliver peak refreshment all on its own – straight from the can, no extras needed - okay, a little ice never hurt.
𝗗𝗢𝗨𝗕𝗟𝗘 𝗗𝗨𝗧𝗖𝗛 𝗧𝗪𝗜𝗡 & 𝗧𝗢𝗡𝗜𝗖𝗦 - Born in the Netherlands – the home of gin – our twin founders, Joyce and Raissa knew a great drink is only as good as its mixer. So they set out to create bold, unexpected flavour pairings that don’t just complement your drink – they define it!
𝗪𝗘'𝗥𝗘 𝗔 𝗣𝗥𝗢𝗨𝗗 𝗕𝗖𝗢𝗥𝗣 - As a certified B Corp, we’re committed to doing business for good – from partnering with ClimatePartner on carbon reduction to sourcing responsibly and supporting social impact initiatives.

8.7

Excellent

We scanned 832 products

We reviewed these offers relevant to the Tonic Water Flavours within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like sodastream, Fentimans, Franklin & Sons, FEVER-TREE, Double Dutch, THE LONDON ESSENCE CO., all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Tonic Water Flavours in the market, we considered we took a deep dive into 4161 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is SodaStream Flavours Classic Diet Tonic Mix, Fizzy Drink Maker Concentrate, Aspartame Free SodaStream Syrup, Sparkling Water Flavouring, Slimline Water for Gin & Tonic - 6x 440ml Multi Pack. We love many things about this product by sodastream. What sets it apart from the competition is Eco-friendly beverage solution, Endless fizzy delights, Natural flavour satisfaction.
The best value product for most shoppers and where user satisfaction is continuously the highest is Fentimans Connoisseurs Tonic Water - Botanically Brewed Water - Infused with Natural Botanicals and Quinine - Low Calorie, Gluten Free and Vegan Friendly Soft Drinks - 8 x 500ml by Fentimans based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Tonic Water Flavours and the best cost-to-value ratio is The London Essence, Co. Blood Orange & Elderflower Tonic, Premium Cocktail Mixer, 200ml, Pack of 24 bottles, No Artificial Colours Preservatives or flavours, Low Calorieat THE LONDON ESSENCE CO. with a 14% discount.
Our list of the best Tonic Water Flavours is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Tonic Water Flavours in The UK

Related Deals You Might Like for Tonic Water Flavours

by Amazon Light Tonic Water with Lime Flavor,1L, Low-Calorie,

DOUBLE DUTCH Skinny Tonic Water (6 x 150ml Cans) - Low Calorie, Diet Tonic Water for Gin and Cocktails |Gluten Free and Vegan Friendly Soft Drink Perfect Mixer

The London Essence, Co. Original Indian Tonic, Premium Cocktail Mixer, 150ml, Pack of 10 cans, No Artificial Colours Preservatives or flavours, Low Calorie

by Amazon Light Indian Tonic Water, 1L, Low-Calorie

by Amazon Indian Tonic Water, 1L

Kofi Ti Indian Tonic Syrup for Soda Stream, Craft Natural Quinine Concentrate, Perfect for Tonic Water, Gin & Tonic, Cocktails & Drinks, SodaStream Flavours, 230 ml, 15 Servings

Britvic Low Calorie Indian Tonic Water, 24 x 150ml Can

We scanned 832 products

We concluded that: