UK ecommerce is under more regulatory pressure than ever when it comes to environmental claims. The Competition and Markets Authority has new direct fining powers, the Green Claims Code is being actively enforced, and consumers are paying closer attention to which brands actually walk the talk.
The good news: if you are running a genuine sustainability program, 2026 is the year that works in your favour. Vague greenwashing is being weeded out, and authentic environmental action is getting more visible. Tree planting programs, where every order triggers a real, tracked tree planted in a verified project, are one of the clearest and most defensible impact claims a UK brand can make.
This guide covers what UK brands need to know about the regulatory landscape, how to communicate sustainability compliantly, and how to build a tree planting program that serves both the planet and your bottom line.
Why UK Brands Face a Higher Bar in 2026
The UK regulatory environment shifted significantly when the Digital Markets, Competition and Consumers Act came into force in April 2025. Before that change, the CMA had to take businesses to court to enforce consumer protection law. Now, they can issue fines directly.
The maximum penalty is 10% of global annual turnover. For a brand doing £10 million in revenue, that is a potential £1 million fine. For a brand doing £50 million, it could be £5 million .
The enforcement target has been broad. ASOS, Boohoo, and George at Asda all signed legal undertakings in March 2024 after a CMA investigation into their sustainability claims.
Brands that can point to specific, verifiable, third-party-verified environmental actions are in a much stronger position.
The Green Claims Code: What It Actually Requires
The UK Green Claims Code sets out six principles for environmental marketing. Every environmental claim your brand makes must satisfy all six:
1. Claims must be truthful and accurate. No exaggeration, no rounding up. If your product is made with 30% recycled materials, say 30%. Do not say “made with recycled materials” as if it is the whole product.
2. Claims must be clear and unambiguous. Vague terms like “eco,” “green,” “conscious,” and “responsible” are now considered difficult to substantiate. Replace them with specific, measurable language.
3. Claims must not omit important information. If your packaging is recycled but the product inside is not, you cannot lead with a headline about sustainable packaging without disclosing the full picture.
4. Comparisons must be fair and meaningful. If you say your product is “greener than before,” you need to specify greener in what way, by how much, and compared to what baseline.
5. Claims must consider the full life cycle. A product is not “eco-friendly” because it ships in a recycled box. The claim has to hold across extraction, manufacturing, shipping, use, and disposal.
6. Claims must be substantiated. Evidence must exist before the claim is made, not collected afterward. Independent verification is strongly preferred over self-assessment.
The practical implication for UK ecommerce brands is clear: you need claims that are specific, evidence-backed, and narrow enough to be accurate. “We plant one tree for every order placed” is exactly this kind of claim. It is specific (one tree), it is tied to a discrete action (an order), it can be independently verified, and it does not overstate. Compare that to “we’re an eco-friendly brand,” which means nothing under the Code.
Why Tree Planting Works as a Sustainability Claim in the UK
Tree planting programs pass the Green Claims Code test because the claim is inherently specific. You are not claiming your entire business is sustainable. You are saying a specific, countable thing happens when a customer buys from you.
When that tree planting is done through a verified organization, and tracked with GPS coordinates and survival monitoring, the substantiation is solid. The trees exist. The location is on record. The organization verifying the planting has independent credentials. You have something to point to.
The conversion data backs this up more broadly. Merchants using tree planting programs as a checkout signal see measurable lifts in conversion rate and average order value. Sustainability, when it is credible and visible, functions as a trust signal.
How to Set Up a Compliant Tree Planting Program
Choose a verified partner
The verification question is now a compliance question, not just a credibility question. Under the January 2026 supply chain guidance, you are responsible for the accuracy of claims that pass through your supply chain. If your tree planting partner’s projects are not credible, your claim that “every order plants a tree” is not credible, and you bear the liability.
GoodAPI plants trees through Veritree, a verified reforestation organization with global projects across Africa, Asia, and Latin America. Every tree planted through GoodAPI is geolocated, tracked, and supported through its critical first years of growth. This gives you documentation you can actually use: specific project locations, verified planting data, and survival monitoring. That is the kind of evidence the CMA’s Green Claims Code requires.
Set up automation through your store
For Shopify merchants, GoodAPI connects directly to your store. You configure a trigger (one tree per order is the most common), and the app handles the rest automatically. There is no manual process, no bulk purchasing, no reconciliation at the end of the month.
The app is available at apps.shopify.com/tree-planting and connects in a few minutes.
For stores on other platforms, GoodAPI also offers a REST API, which you can use to trigger tree planting from any checkout flow, CRM action, or custom event.
Make the claim correctly on your site
How you communicate the program matters as much as the program itself. Some guidance for staying on the right side of the Green Claims Code:
Be specific about the trigger. “We plant one tree for every order” is better than “every purchase supports reforestation.” The first is a specific claim with a clear scope. The second implies something broader.
Name your partner. Saying trees are planted through Veritree, a verified organization with GPS-tracked projects, is far more substantiatable than “we plant trees in certified projects.” Naming the partner gives the claim specificity and allows consumers to verify it.
Show the impact counter. GoodAPI provides a live impact widget that shows how many trees your store has planted. A running total that customers can see is direct, real-time evidence that the program is active and the claim is accurate.
Link to your verification. A simple page on your site, or a direct link to your GoodAPI impact page, gives the CMA exactly what it wants: accessible substantiation, close to the claim.
Communicating Sustainability Without Greenwashing
The brands most exposed under the Green Claims Code are the ones that lead with sustainability as a brand identity but cannot back the specific claims that identity implies.
The safest approach is to lead with facts, not adjectives. Some rewrites to consider:
Sustainability as a UK Market Differentiator
There is a competitive opportunity here, not just a compliance obligation.
UK shoppers are actively searching for sustainable ecommerce options, and they click when they find credible answers. That is a commercial signal worth acting on.
The brands currently serving those queries are, by and large, the ones with specific, verifiable sustainability programs. As enforcement removes the vague claimants from the landscape, the brands with real programs get more of the search real estate, more of the consumer trust, and more of the conversion.
Building a genuine tree planting program now, before further regulatory tightening, is both the right thing to do and the commercially smart positioning. UK consumers have shown they will pay a meaningful premium for brands they trust.
Getting Started
If you are a UK brand on Shopify, GoodAPI is the fastest path to a verifiable, compliant tree planting program. Setup takes a few minutes, planting starts immediately, and you get live impact data you can use in your marketing.
Install the GoodAPI app at apps.shopify.com/tree-planting and start planting trees with your first order.
For brands on other platforms, or for developers building custom integrations, the GoodAPI REST API gives you full programmatic control over when and how trees are triggered, with the same Veritree-verified planting behind every tree.
The regulatory environment is moving toward more accountability, not less. Getting ahead of it with a program that genuinely holds up under scrutiny is the most defensible position you can be in.
For more on building sustainable ecommerce programs, see our guides on carbon offset API vs tree planting API, avoiding greenwashing in ecommerce, and verified tree planting for businesses.