If an explicit no-added-sugar claim matters, Sainsbury’s Diet Ginger Beer is labelled that way; Fentimans Soda Water offers an unflavoured alternative whose listed ingredients contain neither sugar nor sweeteners. If you want tonic instead, Schweppes Slimline is sold as no sugar but contains aspartame, while the cited light tonics from Fentimans and Fever-Tree contain sugar or fructose.
Who is choosing a mixer?
Shoppers looking for no added sugar
You want the claim and ingredients to match that requirement, rather than relying on words such as “light” or “slimline”. ASA/CAP guidance distinguishes a no-added-sugars claim from other sugar and calorie descriptions.
Tonic drinkers choosing zero sugar
You want a tonic for gin or vodka and are comfortable checking which sweetener it contains. Sainsbury’s describes Schweppes Slimline Tonic as a no-sugar option for those serves and lists aspartame among its ingredients.
Bonfire Night hosts serving different preferences
Offering soda water alongside a ginger or tonic option lets guests choose a mixer style and check its ingredients. If alcohol is served, GOV.UK advises against drinking while setting off fireworks, and the Scottish Fire and Rescue Service gives the same warning for tending a bonfire.
What should you check?
Choose the sugar requirement first, then the flavour and ingredients that work for the intended drinks and guests.
| Priority | What to check | Your needs |
| No-added-sugar claim |
Look for an explicit claim and read the ingredients. ASA/CAP guidance says a no-added-sugars claim excludes added mono- or disaccharides and other foods used for sweetening; “light” alone does not establish that claim. |
I want the product’s claim to match a strict no-added-sugar choice, not just a lower-calorie description. |
| Mixer flavour |
Choose between unflavoured soda water, a ginger-flavoured drink and tonic. Fentimans Soda Water lists three ingredients and 0g sugars per 100ml; Sainsbury’s labels its Diet Ginger Beer no added sugar, while its Schweppes Slimline listing describes a no-sugar tonic for gin or vodka. |
For some drinks I want the mixer to stay in the background; for others, ginger or tonic is part of the flavour. |
| Sweeteners |
Read the named ingredients rather than assuming “no sugar” means unsweetened. Sainsbury’s lists aspartame in Schweppes Slimline Tonic and describes its Diet Ginger Beer as a drink with sweeteners. |
If guests avoid particular sweeteners, I need to check the current pack before serving it. |
| Firework duties |
Keep alcohol service separate from setting off fireworks or tending a bonfire. GOV.UK and the Scottish Fire and Rescue Service advise against drinking alcohol during those tasks. |
I need whoever is responsible for the fireworks or bonfire to remain sober. |
Mistakes to avoid
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Taking “light” to mean no added sugar
Fentimans lists sugar and 3.4g sugars per 100ml for Naturally Light Tonic, while Fever-Tree lists fructose in its Light Elderflower Tonic.
If no added sugar is the requirement, check the claim and ingredient list rather than choosing by the word “light”.
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Assuming a no-sugar drink has no sweeteners
Sainsbury’s lists aspartame in Schweppes Slimline Tonic and describes its no-added-sugar Diet Ginger Beer as containing sweeteners.
Check the ingredients for each guest’s requirements; consider an ingredient-minimal soda water when you want to avoid both sugar ingredients and sweeteners.
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Combining alcohol with firework or bonfire duties
GOV.UK advises against drinking alcohol when setting off fireworks, and the Scottish Fire and Rescue Service says not to drink while tending a bonfire.
Keep the person handling those duties separate from alcohol service.
Brand and product references
These examples show why a brand name or a “light” description cannot replace a check of the particular drink’s ingredients.
Fentimans
Its Soda Water and Naturally Light Tonic answer different mixer preferences.
- Fentimans lists carbonated water, salt and sodium bicarbonate in its Soda Water, with 0g sugars per 100ml.
- Its Naturally Light Tonic lists sugar and 3.4g sugars per 100ml.
Schweppes
Slimline Tonic is a tonic option for shoppers seeking no sugar rather than an unsweetened mixer.
- Sainsbury’s describes it as a no-sugar tonic that can be combined with gin or vodka.
- The retailer lists aspartame among its ingredients, so check suitability for the intended guests.
Sainsbury’s
Its Diet Ginger Beer is a ginger-flavoured option explicitly described as no added sugar.
- Sainsbury’s lists the drink in a 2L format and reports sugars below 0.5g per 100ml.
- It is described as containing sweeteners; check the current label for its ingredients.
Fever-Tree
Its light tonic range may appeal when flavour, rather than a strict no-added-sugar requirement, drives the choice.
- Fever-Tree states that its mixers and soft drinks do not contain artificial sweeteners.
- Its Light Elderflower Tonic lists fructose, so that brand statement does not establish a no-added-sugar choice.
Joybuy mixer options
These canned options cover a slimline tonic and a lemon-lime drink for mixing. Check the current pack if an explicit no-added-sugar claim or a particular sweetener matters to you.
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Schweppes Slimline Tonic Water, 12 × 150ml
Consider this 12-can tonic pack when you want individual serves for mixed drinks. Check the current pack for its sugar claim, sweeteners and any ingredient warnings relevant to your guests.
View on Joybuy
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7UP Zero, 24 × 330ml
For a lemon-lime mixed drink, consider whether this 24-can format suits your gathering. Check the current pack for an explicit no-added-sugar claim and for sweeteners relevant to your guests.
View on Joybuy
Common questions
Are “no added sugar”, “no sugar” and “slimline” interchangeable?
No. ASA/CAP guidance sets conditions for a no-added-sugars claim, including the absence of added sugars and other foods used for sweetening. A no-sugar tonic can still contain a sweetener: Sainsbury’s lists aspartame in Schweppes Slimline Tonic.
Which mixer can I consider if I want neither sugar ingredients nor sweeteners?
An ingredient-minimal soda water is one route. Fentimans lists carbonated water, salt and sodium bicarbonate in its Soda Water and reports 0g sugars per 100ml; check the current label against any ingredient-specific requirement.
Can Sainsbury’s no-added-sugar ginger beer be served as a mixer?
It offers a ginger-flavoured carbonated option for a mixed or non-alcoholic drink. Sainsbury’s describes it as no added sugar but containing sweeteners, so check the current ingredients if guests avoid them.
Can the person handling fireworks or a bonfire drink alcohol?
They should not drink alcohol while carrying out those duties. GOV.UK advises against drinking when setting off fireworks, and the Scottish Fire and Rescue Service says not to drink while tending a bonfire.