At a glance

The facts, side by side, stated honestly

Swipe sideways on mobile. Milliways rows sourced from uk.milliways.co, the pack label on Open Food Facts, Companies House and the January 2026 funding announcement, as captured on August 27, 2026; stores and labels change, so check the current pack before buying.

Part 1

What Milliways is, and why the story deserves its credit first

Most gum startups are a founder, a white-label formula and a Shopify theme. Milliways is not that, and a review that pretends otherwise would be dishonest before it started. The company behind the brand, Milliways Food Limited, was incorporated in London in May 2018, three years before the gum launched in January 2021, which is roughly how long it takes to build a chewing gum from actual tree sap rather than order one from a catalogue. Its two directors are an unusual pairing: Tom Raviv, the founder, came out of Deloitte; Leon Amram previously owned Intergum, the Turkish gum manufacturer that was sold to Mondelez. One of them knows spreadsheets, the other has run gum production at industrial scale. For a category where most challenger brands have never seen the inside of a gum factory, that second name matters more than any marketing page.

The money believed the story too. Milliways has raised 10 million dollars in total, the latest a 3 million dollar round announced in January 2026, with investors including Mehmet Yüksek, the former CEO of Perfetti Van Melle North America, which is to say a man who ran Mentos and Airheads for the American market and presumably knows exactly what a gum brand's numbers should look like before he writes a cheque. The same announcement carries the company's own scale claims, and they should be read as exactly that, the company's own: "third largest and fastest-growing gum brand in the UK", 539% sales growth in twelve months, presence in over 10,000 stores globally, over 2,000 of them US retail stores including Sprouts, Meijer, Hy-Vee, Raley's and Fred Meyer. None of those figures is independently audited anywhere we could find, and growth percentages from small bases are the oldest trick in the press-release drawer. But the retail placements are checkable facts, and the UK ones are visible to anyone with a supermarket loyalty card: Tesco stocks it, and M&S Foodhalls have carried it since October 2025.

So the setup is real. This is a properly financed, properly distributed, properly manufactured plastic-free gum, and it occupies a genuine gap: most people have no idea conventional chewing gum is built on synthetic polymers, and the brand that tells them first earns real goodwill. What the rest of this review examines is not whether Milliways is legitimate, it plainly is, but what happens when its specific printed claims are read at the same slow speed we read every gum label on this blog: the certified claim, the teeth claim, the counting of the ingredients, and the independent science that no plastic-free gum brand, this one included, seems keen to bring up.

Part 2

The formula: eight substances, marketed as seven

Here is the full Mighty Mint pack label, as recorded on Open Food Facts: "sweeteners: xylitol, steviol glycosides extract from the stevia plant, natural chicle base, stabiliser: vegetable glycerol, natural flavouring, thickener: gum arabic, anticaking agent: magnesium stearate, glazing agent: carnauba wax". Read as a gum label, it is short, comprehensible and genuinely plant-leaning, and every substance on it has an obvious job: two sweeteners, the chew, a softener, the taste, a texturiser, a flow agent for the factory, and a polish for the finished pieces.

The counting deserves one dry paragraph. The marketing says "just 7 plant-based ingredients". The label names eight substances. The arithmetic resolves easily enough: the two sweeteners, xylitol and steviol glycosides, are grouped under one "sweeteners" heading, and if you count the group as a single ingredient you get seven. This is a counting choice, not a deception, and plenty of brands make it. But a brand whose entire identity is built on honest labels should probably not need a footnote to make its headline number true, and a buyer who reads "7 ingredients" and then counts eight on the pack has learned something small and real about how the marketing rounds things. We note it gently and move on.

The base is the whole point of the product. Chicle is the milky sap of the sapodilla tree, tapped, per the brand's FAQ, in Mexico, and it is what all chewing gum was made of before the 1950s, when synthetic polymer bases replaced it because they were cheaper, more consistent and infinitely scalable. A chicle gum in 2026 is therefore not an innovation so much as a revival with better branding, and there is nothing wrong with that: the sap is a renewable forest product, the harvest supports the trees standing rather than felled, and a spat-out piece of chicle is organic matter rather than a polymer wad. The honest trade-off is mechanical, and it will reappear in the Trustpilot section: tree sap chews softer than engineered polymer, and flavour systems hold differently in it. Milliways did not choose chicle to win a chew-feel contest. It chose it so the label could say what it says.

The sweetener line is solid, with one familiar silence. Xylitol leads the list, backed by steviol glycosides from stevia, and the nutrition panel shows 72 g of polyols per 100 g of gum, which is typical for a sugar-free gum. What the label does not do, and the site does not do either, is break out how much of that polyol content is xylitol specifically, so the xylitol in one 1.9 g piece is not calculable from anything Milliways publishes. On the xylitol shelf this silence is practically the uniform: it is the same gap our PUR gum review found on a brand whose entire pitch is the xylitol, and it matters more for Milliways than it first appears, because in Part 4 the homepage will rest a tooth-decay claim on precisely this unquantified ingredient.

And what is not in the formula: any dental active. No hydroxyapatite, no fluoride, no calcium phosphate system, no mineral of any kind intended for the tooth surface. That is not a criticism; it is a category description. Milliways is a fresh-breath and sustainability gum, and judged as one, its label is tidy. The friction only starts where the marketing reaches into a category the formula does not participate in, which is exactly where this review goes after the claim the brand is actually famous for.

Part 3

The plastic-free claim, read at walking pace

The homepage claim is absolute: "Zero plastic from our gum to our packaging." The M&S listing raises it: "certified biodegradable and plastic-free". Those are two different kinds of sentence. The first is a description a brand can make about itself; the second invokes an external authority, and an external authority has a name. We looked for that name. It is not on the homepage, not in the FAQ, not on the packs as recorded on Open Food Facts, not in the funding announcement. The only third-party appearance we found is a listing on ethy.co.uk, a UK claims-verification platform, whose own methodology for verifying claims is not disclosed on its site. So the precise, fair statement is this: Milliways claims certification, no certifying body is named anywhere we could find, and the one independent listing that exists comes from a platform whose checking process is itself unpublished. For a brand this well funded, naming the certifier would cost a sentence. It is an odd sentence to withhold.

To be clear about what this does not mean: nothing above suggests the gum secretly contains plastic. The chicle base is real, the cardboard packaging is real, and the underlying story is one of the more substantiated in the category. The point is narrower and it is the point this whole blog exists to make: "certified" is a checkable word, and a claim that borrows the authority of certification while omitting the certificate asks for trust it has not documented. The same page pattern, a bold claim with the load-bearing detail missing, will repeat twice more in this review, and three repetitions is a habit, not an accident.

The science Milliways quotes, and the difference it flattens

The study behind the brand's favourite number is real and worth knowing precisely. In 2025, researchers at Queen's University Belfast published, in the Journal of Hazardous Materials, a finding that more than 250,000 micro and nanoplastic particles were measurable in saliva after one hour of chewing a single piece of conventional gum. That is a genuinely startling result about conventional synthetic-base gum, and it is the best argument Milliways has. The brand's marketing compresses it to "plastic gum can leach up to 250,000 microplastic particles per piece". Compare the two sentences slowly: the study measured particles accumulating in saliva across an hour of chewing; the marketing turns that into a per-piece leaching figure, which sounds like a property of the gum rather than a measurement of a mouth over time. The number is real, the study is real, and the paraphrase quietly strips the conditions off it. Subtle, and the direction of the subtlety always favours the brand. Milliways citing this research is fair game; buyers should just know what the research actually measured.

The study nobody's marketing quotes

Here is the complication, and this review would be marketing rather than journalism if it left it out. In March 2025, a UCLA pilot study presented at the American Chemical Society Spring Meeting measured microplastics released into saliva from chewing gum directly, around 100 microplastics per gram of gum, and found something the plastic-free category would rather not discuss: the natural, plant-based gums in the test released similar amounts to the synthetic ones, with the same polymer types detected in both. The caveats matter and we state them plainly: it was a pilot study, it has not been peer reviewed, and it did not test Milliways specifically. It is a preliminary result, not a verdict. But it is the only independent head-to-head measurement of natural versus synthetic gum bases we are aware of, and its provisional answer is that the clean split every plastic-free gum brand sells, polymer bad, plant good, may be blurrier at the laboratory bench than it is on the shelf. Possible explanations range from contamination in processing to coatings to the measurement itself picking up non-base particles, and none of them are settled.

What should a fair reader do with that? Not conclude that Milliways is equivalent to conventional gum; the study is too preliminary and too general for that, and the non-plastic case for chicle, a renewable tree sap against a synthetic polymer, stands on more legs than particle counts alone: sourcing, packaging, what the spat-out wad is made of. But a buyer paying a premium specifically to get microplastics out of their saliva should know that the one direct measurement so far says the difference may be smaller than the marketing implies, and that the honest posture for every brand in this category, ours included when we write about anything, is to cite the studies with their caveats attached rather than shorn off. Milliways quotes the Belfast study without its conditions and does not mention the UCLA pilot at all. That, more than any single claim, is the pattern to grade.

Part 4

The teeth sentence: one claim, zero numbers

The Milliways homepage makes exactly one dental claim: "Keeps teeth healthy, prevents tooth decay", attributed to the xylitol in the gum. Start with what is defensible about it. Chewing any sugar-free gum after meals raises saliva flow, and saliva is the mouth's own repair fluid: it dilutes and neutralises the acid that plaque bacteria produce, and carries dissolved minerals back toward the enamel surface. Xylitol adds a mechanism on top: the cavity-linked bacteria cannot ferment it into acid the way they ferment sugar. A xylitol-sweetened gum pointing at tooth health is therefore not inventing a connection. The connection exists, and it is why sugar-free gum in general has a place in dental advice.

Now hold the sentence against the label. The research behind xylitol's dental reputation is dose dependent: the studies that built it exposed mouths to specific daily amounts of xylitol, repeated through the day, and the benefit tracks the exposure. So the first question any decay-prevention claim must answer is: how much xylitol does one piece deliver? Milliways does not say. Not on the pack, where xylitol hides inside an aggregate 72 g of polyols per 100 g, not in the FAQ, not anywhere on the site. The second question is: which study supports the claim for this product or this dose? The site cites none. What remains is a sentence shaped like science with no numbers under it, and a buyer has no way to know whether their three pieces a week or thirty pieces a week resembles anything the research studied. We are not calling the sentence false. Xylitol's evidence base is real, and Milliways may sit anywhere within it. We are saying the sentence is unverifiable from everything the company publishes, which for a claim about preventing a disease is the problem entire. If you want to see how the honest version of this reasoning runs across the whole shelf, our guide to which chewing gum is actually healthy applies the same two questions to every brand it covers.

The deeper issue is category confusion, and it is worth naming because it is how buyers get quietly mis-sold. Milliways is a fresh-breath and sustainability gum. Its formula contains no dental active: no mineral system for the enamel, no fluoride, nothing whose job is the tooth surface. That puts it in the same functional category as any well-made sugar-free gum, plus the genuine sustainability difference of its base, and there is no shame in that category; it is where most gum belongs. The homepage sentence, though, borrows the language of a different category, oral care, where products carry actives, doses and evidence. A shopper who reads "prevents tooth decay" and buys Milliways as their dental step has bought a gum that delivers the sugar-free baseline and nothing beyond it, at a premium price justified by an environmental feature, not a dental one. The undosed-xylitol pattern is everywhere on this shelf, our Xylichew review found a brand naming a daily gram target while withholding the per-piece figure, but Milliways is the only brand we have reviewed doing it while its actual product story lives in a different aisle altogether. The gum is not pretending. The homepage is.

Part 5

What buyers say, what it costs, and where to find it

For a brand claiming top-three UK status, Milliways has a strikingly thin public review footprint: its Trustpilot page holds just 16 reviews at the time of writing, and that smallness is the first honest thing to say about it. Sixteen self-selected reviews are weather, not climate; unhappy customers review more readily than happy ones everywhere on Trustpilot, and a brand selling through supermarkets collects most of its customers where no review prompt follows. So read what follows as a small, skewed sample read for its pattern, not its average.

The average, for the record, is poor: 2.7 out of 5, with 63 percent of reviews at one star. The pattern inside it is what makes the sample useful, because the complaints are not scattered. They converge on one thing, the chew itself. A reviewer named Paul, writing in August 2026, says the gum "keeps its consistency for about three minutes". Another, Peace, in May 2024: "flavour lasts 10 seconds at most, also it's so unchewy". Different years, same physics. This is exactly what Part 2 predicted from the label: chicle is a soft tree sap, synthetic polymer is an engineered chewing machine, and a buyer raised on the latter will feel the difference in the first minute. The genuine fans exist in the same sample, "Obsessed with Milliways!" writes RG in November 2024, and the split is instructive: the people who bought a planet-friendly gum are happy, and the people who bought a gum are not. Milliways' real product is the label; the chew is the fee.

We flag one more small thing because this is a disclosure review: the 16 reviews sit on the domain milliwaysfood.com, and none of this footprint appears on the brand's own pages, which is normal, and fine, and exactly why checking a brand's Trustpilot before believing its homepage is a habit worth having in every category.

The price arithmetic

The pack maths can be done, because piece counts are printed. In the UK, the brand's own store sells a 12-pack of 10-piece packs for 12 pounds: 120 pieces, so about 10p per piece, which for a chicle-base gum with this ingredient list is genuinely reasonable, cheaper per piece than most of the boutique gum shelf. In the US, a single 10-piece pack is 2.49 dollars, about 25 cents a piece, and the 30-piece pack at 5.99 brings it to about 20 cents, the usual single-pack premium in reverse. Each 10-piece pack weighs 19 g, call it 1.9 g per piece, ordinary for pellet gum. Two practical notes for the habit chewer: the softness complaints above mean a piece's useful life may be short, which quietly raises the real cost per satisfying chew; and we found no subscription programme on either store, so the 12-pack is the brand's only bulk lever. For a company this focused on retail shelves, that is consistent: Milliways is built to be picked up at a till, not delivered monthly.

Where it actually is

Five flavours: Peppermint, Spearmint, Mighty Mint, Watermelon, Bubblemint. In the UK, Tesco and M&S Foodhalls carry it, the M&S listing running since October 2025, and it is listed on Amazon UK; the brand's own store at uk.milliways.co sells the 12-packs. In the US, the company's January 2026 announcement claims over 2,000 retail stores, naming Sprouts, Meijer, Hy-Vee, Raley's and Fred Meyer, chains concentrated in exactly the natural-grocery territory where a plastic-free gum makes intuitive sense. The distribution tells you who the brand thinks its buyer is: someone in a supermarket queue choosing between Milliways and Extra, not someone researching gum on the internet. Which, given that you are reading a 5,000-word review of it, makes you the exception the brand never planned for.

The rest of the green ledger

Beyond the base, the sustainability file reads like this. Packaging: cardboard, recyclable, and genuinely plastic-free as far as anything published shows. Degradation: the FAQ says a chewed piece "biodegrades like a piece of fruit or veg", a vivid sentence with no timeframe attached, and fruit and veg themselves range from days to months, so the image does the work a number should. Impact accounting: the brand says it has "saved over 150 million pieces of plastic", a self-reported figure with no methodology published, presumably one conventional piece avoided per Milliways piece sold, but presumably is our word, not theirs, because theirs do not say. The honest summary of the ledger: the physical product choices are real and checkable, and every quantified green claim around them is self-reported and unaudited. That is better than the category average, and it is still short of what a brand this funded could publish tomorrow.

Part 6

Who Milliways is for, and who is shopping in the wrong aisle

Good fit: the buyer whose reason is the plastic. If what bothers you about gum is the synthetic polymer in your mouth and the wad that outlives you on the pavement, Milliways is one of the most credible ways to act on that in a UK supermarket: a real chicle base, cardboard packs, real distribution, and a per-piece price that does not punish the principle. Take the chew for what the reviews say it is, softer and shorter-lived than the polymer gum you grew up with, and treat that as the cost of the choice rather than a defect. Buyers in this group are optimising for the columns Milliways actually wins, and nothing in this review argues with them; the UCLA pilot is worth knowing as an open question, not a veto.

Read sceptically if the teeth sentence is what sold you. A buyer who arrives at Milliways through "prevents tooth decay" is buying the one sentence on the site that nothing published can support at the product level: no dose, no citation, no active ingredient. The gum still delivers the sugar-free baseline that any dentist would rather see than a sugared gum, and chewing it after meals is a perfectly good habit. But as a dental decision, it is a fresh-breath gum wearing an oral-care sentence, and if dental benefit is the actual goal, the sensible starting point is our breakdown of what dentists actually recommend in a gum, which walks through what the baseline does and where actives begin.

Step across the aisle if you are chewing for your enamel. Anyone chewing specifically for enamel support or remineralisation is shopping in a category Milliways does not enter: gums built around a mineral active, with the dose as the whole point. The standard this review applied to Milliways applies there with more force, not less, because mineral-category prices deserve mineral-category proof: what active, what particle size, how many milligrams per piece, and where is the certificate. Our round-up of remineralizing chewing gum, tested and compared holds every candidate in that category, ours included, to exactly those questions, and brands that answer them in print exist. Any brand that will not answer has told you something useful too.

The verdict in one line. Milliways is the most credible plastic-free gum story we have reviewed and a perfectly honest purchase for the buyer who wants exactly that; it is not an oral-care product, its boldest claims are the ones with no numbers under them, and the right way to buy it is for its label, with the homepage's dental sentence left on the homepage.

Questions, answered

The things people actually ask