Who is this choice for?

Travellers drawn to a glass bottle

If the presentation matters to you, the key question is when you will buy or drink it: before security, after security, or at an airport with different liquids rules.

Shoppers comparing regular and sugar-free drinks

A can may meet your needs without the glass presentation. Compare the named variant’s nutrition information rather than assuming every drink from the same brand has the same sugar content.

Passengers checking caffeine warnings

If caffeine content or a pack warning affects your choice, read the label of the specific drink. Sugar-free does not, by itself, mean caffeine-free.

What should you check before buying?

Start with where the drink will pass through security, then decide whether the glass format, sugar information or caffeine warning changes your choice.

Glass bottle

Consider it: When you want glass presentation and have a suitable plan for buying or drinking the bottle.

Trade-off: The listed 250ml Red Bull glass bottle exceeds the limit at most UK airport security checkpoints.

Regular can

Consider it: When glass is not essential and a standard can suits your plans after security.

Trade-off: A 250ml can does not get around a 100ml liquids limit; Tesco also lists sugars in regular Red Bull.

Sugar-free can

Consider it: When avoiding sugar matters more to you than having a glass bottle.

Trade-off: Check caffeine separately: Tesco’s Red Bull Zero listing carries a high-caffeine warning.

Priority What to check Your needs
Security and timing Check the rules at your departure airport and any transfer checkpoint. GOV.UK says containers over 100ml cannot pass security at most UK airports, even partly full; Heathrow says it permits containers up to 2 litres at Terminals 2–5. I plan to carry the drink through security, so its container size needs to fit the rules at the airport I will use.
Glass or can Crystal Cash & Carry lists Red Bull Glass in a 250ml bottle. Confirm whether the particular terminal retailer carries the format you want; a can is a different product, not a glass-bottle substitute. Glass presentation matters to me, but I can choose a can if I do not need that format for this part of the journey.
Sugar information Compare the exact variants’ nutrition panels. Tesco lists 11g sugars per 100ml for regular Red Bull and 0g per 100ml for Red Bull Zero; do not apply those figures to a differently named variant without checking its label. If I am choosing on sugar content, I want to compare the drinks I might actually buy, not rely on the colour of the can.
Caffeine and warnings Read the caffeine amount and pack warning for the specific drink. Tesco lists Red Bull Zero as a high-caffeine drink and says it is not recommended for children or pregnant or breast-feeding women. I need to know whether the drink contains caffeine, even if its name says it has no sugar.

What can catch you out?

  • Assuming every UK airport has the same liquids rule

    A 250ml bottle or can is above the 100ml container limit GOV.UK says applies at most UK airports. Heathrow states a different limit for its terminals; that does not establish the rule at another airport.

    Check your departure and transfer airports before buying a drink that you intend to take through security.

  • Assuming a glass-bottle listing means you can buy one at the terminal

    Crystal Cash & Carry lists a 250ml Red Bull glass bottle, but a trade listing does not establish what a particular airport food outlet stocks.

    If glass is important, check the specific terminal retailer before relying on a post-security purchase.

  • Reading sugar-free as caffeine-free

    Tesco lists Red Bull Zero with 0g sugars per 100ml and a high-caffeine warning. Sugar and caffeine answer different questions about the drink.

    Check both lines on the exact product label, including any warning, before deciding between variants.

  • Treating an announced age rule as already UK-wide

    GOV.UK announced that England’s ban on sales of high-caffeine energy drinks to under-16s will take effect in April 2027. That future England-specific date should not be described as a current rule across the UK.

    For a purchase involving a child, check the product warning, the retailer’s current policy and the rules applying where and when the purchase takes place.

Relevant brand references

These references distinguish documented drink formats; they do not indicate what an airport retailer stocks.

Red Bull

Crystal Cash & Carry lists Red Bull Glass as a 250ml glass bottle. Tesco separately lists regular Red Bull and Red Bull Zero in 250ml formats.

  • The listed glass product gives shoppers a specific bottle format to ask a retailer about.
  • The 250ml bottle exceeds the 100ml container limit at most UK airports; the Tesco can listings do not establish glass-bottle availability.

Monster Energy

Monster Energy Britain lists Original, Zero Sugar, Ultra and Juiced ranges on its product page.

  • The brand lists several ranges, including zero-sugar choices, for comparing named variants.
  • Those range names do not establish that a particular Monster drink comes in a glass bottle.

Lucozade

Lucozade states that Alert contains 32mg caffeine per 100ml, or 160mg in a 500ml can.

  • Lucozade publishes a caffeine amount for the stated Alert can size.
  • The stated Alert format is a can, not a glass-bottle option for this decision.

Joybuy can options

These Joybuy products are regular and sugar-free Red Bull can packs to consider when glass is not essential. Each can is 250ml, so check airport liquids rules if you intend to carry one through security from landside.

Red Bull Energy Drink 250ml 12-pack cans

Red Bull Energy Drink 250ml 12 Pack

A regular can option if glass is not essential and you are choosing a drink for use after security. The pack contains twelve 250ml cans, not glass bottles; check the label for sugar content and caffeine warnings.

View on Joybuy
Red Bull Sugarfree Energy Drink 250ml 4-pack cans

Red Bull Sugarfree Energy Drink 250ml 4 Pack

A sugar-free variant to compare if you prefer a can and sugar content matters to your choice. The pack contains four 250ml cans, not glass bottles; check this variant’s nutrition information and caffeine warning rather than using figures for Red Bull Zero.

View on Joybuy

Questions about airport travel and energy drinks

Can I take a 250ml glass-bottle energy drink through UK airport security?

At most UK airports, not from landside through security: GOV.UK says containers over 100ml are not permitted even when partly full. Heathrow says containers up to 2 litres are permitted at Terminals 2–5, so check the rules for the airport you will actually use.

Does buying an energy drink after security settle the travel question?

Buying it after security avoids taking it through that departure checkpoint from landside. If you plan to carry it onto a flight or through another airport, check the airline’s requirements and any transfer-airport security rules before buying.

Is a sugar-free energy drink caffeine-free?

Not necessarily. Tesco lists Red Bull Zero with 0g sugars per 100ml and a high-caffeine warning; read the caffeine information on the exact variant you are considering.

What caffeine information matters during pregnancy?

Milton Keynes University Hospital NHS Foundation Trust advises limiting total daily caffeine intake during pregnancy to 200mg. Check the drink’s own caffeine amount and warning alongside other sources of caffeine; Tesco’s Red Bull Zero listing says it is not recommended for pregnant or breast-feeding women.

Is England’s under-16 energy-drink sales ban in force?

No. GOV.UK announced that England’s ban on sales of high-caffeine energy drinks to under-16s will take effect in April 2027. For a purchase before then, check the retailer’s current policy and the product warning rather than treating that future England rule as an existing UK-wide ban.