Why Sustainability and Responsible Communication Aren’t the Same Thing.

Why communication standards matter as much as, if not more than, sustainability performance itself.

In the public imagination, sustainability and responsible communication are often fused into one seamless virtue. A company with a gleaming net zero pledge, a biodegradable packaging line, or a glossy CSR report is assumed not only to be a leader in environmental performance but also a beacon of truth in how it speaks. Conversely, an organisation lagging on climate targets or struggling to decarbonise is quickly judged as a poor communicator, untrustworthy by default.

But the reality is more complicated, and far more revealing of the cultural blind spots in how we judge corporate integrity.

Sustainability ≠ Honesty

A business can operate on the cutting edge of sustainability and still be deeply irresponsible in its communications. In fact, the pressure to live up to its own halo can incentivise obfuscation. The more a brand markets itself as “sustainable,” the greater the reputational risk if the claim falters.

This is precisely why the UK Competition and Markets Authority forced undertakings from ASOS, Boohoo and George at Asda in 2024: these retailers had invested in “conscious” or “responsible” lines, but their claims were too vague, too broad, too easy to misinterpret. They weren’t being penalised for failing to act on sustainability, but for the language they chose to wrap it in.

The same dynamic played out in aviation, when Virgin Atlantic proudly trumpeted the “100% sustainable” credentials of a transatlantic flight fuelled partly by biofuels. The Advertising Standards Authority banned the ad, not because the airline wasn’t pursuing decarbonisation, but because the phrasing implied a level of environmental perfection that science simply couldn’t support. Here, innovation was real. But communication was misleading.

These aren’t isolated lapses. In a global survey, nearly six in ten executives admitted their companies had overstated sustainability efforts. The most climate-progressive firms may well be at greatest risk, precisely because the temptation to exaggerate is highest where there are reputations to defend.

Unsustainable ≠ Irresponsible

Equally, being less sustainable does not automatically make a communicator dishonest. Many carbon-intensive industries – from cement to aviation – face barriers to rapid decarbonisation that no amount of rhetoric can sweep away. Yet some are now speaking with unusual candour about their limits.

Consider those oil and gas firms facing lawsuits not for inaction per se, but for communications that overreached. Santos in Australia was sued for promoting a “net zero plan” that leaned on unproven technologies and implied compatibility with gas expansion. By contrast, companies that admit openly that their models remain misaligned with Paris goals, and that fundamental trade-offs persist, can paradoxically build more trust than peers with bolder, vaguer slogans.

Trust, after all, is built not on performance alone but on the willingness to narrate imperfection. When an airline acknowledges that sustainable aviation fuels remain scarce, or a retailer admits that recycled fibres still represent a fraction of its overall volume, it signals a kind of integrity that consumers, and regulators, are increasingly primed to reward.

The Charter’s Principle: Integrity Before Image

For signatories of The Anti-Greenwash Charter, this distinction matters. Our mission is not to crown the “greenest” operator, but to demand honesty in the way every operator communicates. Communication is an ethical act in its own right, separate from operational performance.

Responsible communication means:

• Accuracy over aspiration: framing sustainability claims in verifiable, evidence-based language.

• Transparency over perfection: admitting limits, trade-offs, and ongoing challenges.

• Context over slogans: placing claims in proportion to overall impact, not cherry-picking the best statistic.

These principles apply equally to a retailer with a recycled capsule line and to a heavy industrial player locked into long-term emissions trajectories.

Why This Distinction Matters

If we continue to conflate sustainability with responsible communication, we risk two dangers. First, we allow high-performing companies to overstate their case and escape scrutiny. The CMA’s recent actions show just how tempting and routine that overstatement can be. Second, we delegitimise candid organisations whose very honesty may be their greatest act of responsibility.

RepRisk data suggests greenwashing incidents may be declining in number globally, but those that remain are more severe, more systemic, and more damaging. That is not just a quirk of corporate PR; it is the logical outcome of confusing sustainability with honesty, and rewarding only the appearance of perfection.

The lesson is stark: trust is not built on how sustainable you are. It is built on how truthful you are. And in an age of mounting climate urgency, truth may be the most sustainable currency of all.

Sustainability Communications with Confidence

If your organisation wants to protect its reputation, reduce greenwashing risk, and communicate sustainability with confidence, we’d love you to join us.

📢 Become a signatory of The Anti-Greenwash Charter.
Shape the future of responsible communication and show stakeholders what honest, trusted sustainability leadership looks like.

Join the Charter →

Why I Left the Agency World to Build Trust in Sustainability.

After nearly a decade running an agency, I realised the marketing tools I’d relied on weren’t enough to tackle the growing trust crisis in sustainability. So I stepped away, and started something new.

For most of my career, I worked in marketing. I ran an agency called Gusto, and we helped purpose-led brands shape their narratives, build campaigns, and communicate sustainability in ways that felt bold, clear, and creative. I believed in the work we were doing. I still do.

But over time, I started to feel uncomfortable.

Not because clients weren’t committed. They were. But because the space we were working in, sustainability communications, was getting noisier, riskier, and more fragile by the day. The pressure to simplify complex issues, to lead with impact, to wrap everything in a perfect story… it didn’t always line up with what was actually true.

And when you work in comms, you see that tension up close.

We’d be helping a brand do something genuinely positive, and yet the messaging still felt vulnerable. Were we overstating it? Was the claim going to stand up? Had we crossed an invisible line between confidence and compliance? The truth is, even the most well-intentioned campaigns felt like they were walking a tightrope.

It became increasingly clear to me that trust – in sustainability claims, in brands, in our role as communicators – was breaking down. And we didn’t have the tools to fix it.

The Brief That Changed Everything

The idea for The Anti-Greenwash Charter started with a client project at Gusto. The company was preparing for B Corp certification and wanted help ensuring their sustainability communications were solid – not just from a storytelling perspective, but from a credibility one. They weren’t asking for creative. They were asking for structure. A way to communicate honestly, with confidence, without falling foul of the UK’s new Green Claims Code.

That question stuck with me.

So we tried something new. We helped them develop a Green Claims Policy – a short, transparent document that laid out how their sustainability messaging worked: who was involved, what checks were in place, how evidence was reviewed, and how uncertainty was handled. It wasn’t flashy, but it worked. Internally, it aligned teams. Externally, it gave people something real to trust.

It was the kind of thing I hadn’t seen before, but knew more organisations needed.

Choosing to Step Away

That one policy changed my direction. I realised I didn’t just want to keep creating campaigns. I wanted to help build a new standard – one where sustainability communications weren’t just compliant, but credible. Where communicators weren’t left guessing. Where organisations could lead with integrity, even when their story was still evolving.

So in early 2022, I began to step away from agency life and started The Anti-Greenwash Charter.

The goal was simple: to give people a clear, independent way to approach sustainability communications with honesty and rigour. Since then, the Charter has grown into a not-for-profit initiative supporting organisations with structured reviews, guidance, and a set of principles that take the pressure off guesswork and greenwash alike.

What I’ve Learned

I didn’t leave Gusto because I stopped believing in communication. I left because I wanted it to mean more.

Marketing is still a powerful tool. But when it comes to sustainability, we need more than compelling messages – we need systems that back up those messages with truth. Without that, trust erodes. And when trust erodes, we lose the very progress we’re trying to communicate.

Since launching the Charter, I’ve also been inspired to found truMRK, a service that independently verifies sustainability reports – checking that claims are not only clear, but evidence-based and aligned with regulation. I also continue to host a podcast, The Responsible Edge, where I speak to people across sectors who are trying to lead responsibly in a world that doesn’t always make that easy.

All of this is driven by the same mission: to rebuild trust in how we talk about sustainability. To shift the culture of comms from performance to principle. To support the people – especially in marketing and ESG – who are so often caught in the middle, trying to do the right thing with imperfect tools.

This Work Isn’t About Perfection

If there’s one thing I’ve learned, it’s that responsible communication isn’t about having all the answers. It’s about being transparent about the process. Being willing to say “this is what we know, this is what we’re working on, and this is how we’re making decisions.”

That’s what the Charter helps organisations do. It’s not a badge or a shortcut. It’s a commitment to getting it right – or at least, being honest when we’re not there yet.

And I think that’s what people want. Not perfection. Not green gloss. Just clarity, honesty, and a bit more courage in the way we tell our stories.

Sustainability Communications with Confidence

If your organisation wants to protect its reputation, reduce greenwashing risk, and communicate sustainability with confidence, we’d love you to join us.

📢 Become a signatory of The Anti-Greenwash Charter.
Shape the future of responsible communication and show stakeholders what honest, trusted sustainability leadership looks like.

Join the Charter →

The Anti-Greenwash Charter: From One Brief to a Shared Commitment.

How a simple client challenge became a growing, global movement for progressive sustainability communication

Sustainability is one of the most important conversations of our time, but also one of the hardest to get right. For years, organisations have struggled with how to talk about their environmental and social impact without overselling, oversimplifying, or retreating into silence out of fear of getting it wrong.

On one side is greenwashing, the exaggeration or distortion of progress. On the other is greenhushing, the choice to stay silent, even when meaningful work is happening.

It’s in this space, between overstatement and understatement, that The Anti-Greenwash Charter was born.

But it didn’t begin as a campaign or a grand industry initiative. It started with a single client brief.

A Real Client, a Real Problem

Back in 2021, a client of our agency partner, Gusto, was preparing for B Corp certification. They wanted their sustainability messaging to reflect the rigour of their internal efforts. They were looking for clarity and confidence, not just compliance.

At the same time, the UK’s Competition and Markets Authority had launched its Green Claims Code, putting brands on notice: misleading or vague environmental claims were no longer just bad practice, they were a legal risk.

That combination of pressure and principle led to a new idea.

“We were seeing the same tension everywhere,” says Charlie Martin, founder and CEO of The Anti-Greenwash Charter. “Organisations genuinely trying to do the right thing were afraid to speak up. Others, less careful, were making bold claims without the substance to back them. We needed a way through the noise.”

So the team asked: what if organisations published how they approach sustainability communications? Not just what they say, but how they decide what’s fair to say?

A Straightforward but Powerful Idea

The result was the first Green Claims Policy, a public statement setting out how an organisation manages its sustainability communications: how claims are checked, who’s involved, what standards are used, and where there’s still work to do.

It wasn’t flashy. But it was grounded. Honest. And incredibly useful.

“We weren’t giving people a script,” Charlie explains. “We were helping them show their working. That’s what builds trust, not the slogan, but the system behind it.”

For that first B Corp client, the policy became a cornerstone, internally and externally. It helped align teams, meet legal guidance, and communicate with confidence.

Soon, others followed.

From One Policy to a Charter

Word of the idea spread – first quietly, then more widely. More organisations wanted to develop Green Claims Policies. More teams wanted guidance. What had started as a single solution became a conversation. A community. And then, a shared commitment.

The Anti-Greenwash Charter was shaped by that energy. It’s now a growing alliance of organisations who want to raise the bar for sustainability communications -brands, agencies, campaigners and consultants committed to saying what they mean, and meaning what they say.

“It wasn’t a top-down initiative,” says Charlie. “It came from people in the work – marketers, sustainability leads, legal teams – who were all trying to do this better. We just gave it a name, and a framework.”

Why It Matters Now

The stakes are only getting higher. Public trust is fragile. Regulatory pressure is increasing. And the climate crisis is unfolding in real time.

In this context, the old playbook – smooth the edges, tell the best version of the story, avoid saying too much – doesn’t hold up.

But going quiet isn’t the answer either.

“Greenhushing is becoming as dangerous as greenwashing,” says Charlie. “If responsible organisations feel they can’t talk about their progress, we lose momentum. And that’s bad for everyone.”

The Charter offers a different path. One built on transparency, process, and shared responsibility. It doesn’t ask for perfection – it asks for accountability.

It helps organisations speak honestly, even when the story is still in progress.

What Comes Next

Since launching, The Anti-Greenwash Charter has helped a number of organisations publish Green Claims Policies, align teams, and rethink how sustainability is communicated. It continues to grow with input from legal experts, regulators, campaigners and the people doing the daily work of marketing and messaging.

“What makes this powerful is how practical it is,” says Charlie. “We’re not just pointing out the problems – we’re building tools to help fix them. And we’re doing it together.”

The Charter isn’t a badge. It’s a collective mindset. A commitment to open, accurate, and meaningful communication about sustainability.

It started with one client asking one honest question.

And it’s becoming a shared answer, shaped by those ready to lead with clarity and care.

Sustainability Communications with Confidence

If your organisation wants to protect its reputation, reduce greenwashing risk, and communicate sustainability with confidence, we’d love you to join us.

📢 Become a signatory of The Anti-Greenwash Charter.
Shape the future of responsible communication and show stakeholders what honest, trusted sustainability leadership looks like.

Join the Charter →

The High Cost of Irresponsible Corporate Communication.

How one misplaced claim can cost you trust, investment, and the future of your brand

Corporate communication isn’t just about shaping perception anymore. It’s about managing risk. In the climate decade, the wrong message—or even the right message delivered badly—can trigger a chain reaction that derails strategy, saps resources, and shatters trust.

Here’s what can go wrong when the care isn’t there.

1. Regulatory Trouble You Can’t PR Your Way Out Of

Regulators have shifted from guiding businesses to investigating them. In the UK, the Competition and Markets Authority has already cracked down on misleading environmental claims under the Green Claims Code. In Australia, airlines have faced lawsuits over “carbon neutral” ads based on offsets that didn’t hold up to scrutiny.

Once you’re under investigation:

• Legal costs mount long before any verdict.

• Investor confidence drops as uncertainty rises.

• The story leaves your hands—and gets told by headlines.

2. Viral Backlash That Outruns the Facts

Social media doesn’t wait for nuance. It doesn’t care about your carefully crafted statement from Legal.

H&M’s “Conscious” collection is a cautionary tale: when the brand’s sustainability scorecards were called into question in 2022, the online conversation moved faster than their official response. By the time clarifications came, the damage was already baked into public opinion.

Backlash travels further than correction—every time.

3. The Talent Drain

Employees, especially younger ones, are watching how their companies communicate. When messaging feels dishonest or misaligned with reality, they don’t just roll their eyes—they leave.

A 2023 Deloitte survey found nearly half of Gen Z employees would consider quitting if their employer was found guilty of greenwashing. Losing top talent mid-strategy is more than an HR headache—it’s a competitive handicap.

4. Lost Customers—And They Don’t Come Back

A customer who feels misled rarely returns. Look at Volkswagen’s “Dieselgate”: a decade on, they’ve spent billions on rebuilding trust and still haven’t fully recovered their pre-scandal brand reputation.

In a crowded marketplace, trust is the moat. Once it’s breached, loyalty leaks fast.

5. Internal Paralysis

When comms teams are firefighting, they’re not building.

• Campaigns get delayed or scrapped.

• Executives become risk-averse, slowing decision-making.

• Progress on real sustainability initiatives stalls because everyone’s focused on fixing perception instead of performance.

It’s not just a distraction—it’s a drain on momentum at the very moment you need it most.

6. The Industry-Wide Fallout

The harm doesn’t stop with you. A single high-profile greenwashing scandal makes it harder for other companies—especially those doing the right thing—to be believed. It feeds the public narrative that “all brands lie,” turning consumer cynicism into an industry-wide headwind.

What Responsible Looks Like

Responsible corporate communication isn’t about being perfect—it’s about being clear, specific, and willing to show your work:

• Make claims you can prove—and keep the proof public.

• Avoid vague phrases like “eco-friendly” without context.

• Admit limitations and next steps, not just successes.

• Use independent verification before you publish.

Because in the climate decade, your words aren’t just decoration on your brand—they’re structural. And if they crack, everything built on them is at risk.

Sustainability Communications with Confidence

If your organisation wants to protect its reputation, reduce greenwashing risk, and communicate sustainability with confidence, we’d love you to join us.

📢 Become a signatory of The Anti-Greenwash Charter.
Shape the future of responsible communication and show stakeholders what honest, trusted sustainability leadership looks like.

Join the Charter →

The Regulation That Was Meant to Save Us From Lies.

Why corporate greenwashing is still thriving — and what we do when the rules go silent

For a brief moment, it looked like the era of vague, feel-good climate claims was about to end.

The EU had proposed a sweeping Green Claims Directive — a law that would have required companies to back up environmental claims with hard evidence. No more “eco-friendly” without substance. No more “climate neutral” based on offset smoke and mirrors. Green would finally mean something.

And then, in mid-2025, the European Commission quietly withdrew it.

Too complex. Too burdensome. Too politically inconvenient.

And so the silence returns — not just from brands, but from the regulators meant to hold them accountable.

The Invisible Cost of Inaction

The global marketplace is awash in sustainability promises. From carbon-neutral airlines to biodegradable trainers to ESG-branded investments, the climate narrative is a cornerstone of modern brand identity.

But as the number of claims rises, so does the uncertainty around their credibility. And now, in the absence of clear regulatory guardrails, trust has become a free-floating asset — untethered from truth.

This isn’t a fringe issue. Greenwashing doesn’t just mislead customers — it erodes climate ambition. It rewards opacity over action. It penalises those who disclose transparently while emboldening those who posture.

“Every unverified claim is a tax on integrity,” says Charlie Martin, CEO of The Anti-Greenwash Charter. “It confuses the market and delays the work we actually need to do.”

Why the Regulatory Landscape Is So Uneven

While some markets are tightening their grip — the UK’s Green Claims Code, for example, gives the CMA power to investigate misleading environmental messaging — enforcement is patchy. Guidance exists, but there’s still no unified legal standard for sustainability communications across most sectors.

In the U.S., the Federal Trade Commission is updating its Green Guides — but progress is slow. In Australia, companies like Etihad and Lufthansa have faced legal action for “green gloss” ads, but these are still edge cases, not industry norms.

And in the EU? The withdrawal of the Green Claims Directive has left a void.

The message to business is confusing: Be bold about sustainability — but tread carefully. Be transparent — but don’t say too much.

It’s no wonder that greenhushing is on the rise.

We Built a Market Where It’s Safer to Say Nothing Than to Say Something Wrong

This is the most insidious form of failure: not the absence of rules, but the abundance of fear.

Fear that saying the wrong thing will trigger reputational ruin. Fear that minor missteps will be framed as moral failure. Fear that brands who try to communicate honestly will be punished while others skate by on platitudes.

So they go quiet.

They scrub climate language from ads. Pull social media campaigns. Pause their reporting.

And in the vacuum left behind, the loudest voices are often the least credible.

What We Need Now: Independent Guardrails, Voluntary Courage

If regulation can’t (or won’t) keep up, what fills the gap?

Increasingly, it’s independent frameworks and verification systems. Tools like green claims policies, sector-led charters, and third-party reviewers are stepping in — not to replace regulation, but to make progress possible in its absence.

One such tool, truMRK, offers organisations a way to review their sustainability reports before publication. Not to validate performance — but to assess how claims are communicated. Whether the evidence is sound. Whether the language aligns with guidance from the CMA, ASA/CAP, ISO, and GRI.

It’s not flashy. But it’s credible. And that’s the point.

Corporate Integrity Is Now Voluntary — And That’s Both a Risk and a Responsibility

In a better world, honesty wouldn’t need to be optional. But in this one, it is.

The responsibility now falls on business leaders, marketing teams, and sustainability professionals to hold the line. To speak with care — and to back it up. To build trust without waiting for regulators to show them how.

Because the ESG backlash is growing. The legislation is stalling. And the public is watching.

If climate progress is to mean anything, it has to be believable. And that means building a culture — and a system — where the truth has a place to stand.

Sustainability Communications with Confidence

If your organisation wants to protect its reputation, reduce greenwashing risk, and communicate sustainability with confidence, we’d love you to join us.

📢 Become a signatory of The Anti-Greenwash Charter.
Shape the future of responsible communication and show stakeholders what honest, trusted sustainability leadership looks like.

Join the Charter →

The Most Dangerous Kind of Silence: Why Greenhushing Puts Climate Progress at Risk.

There’s a form of climate delay that doesn’t come from denial. It comes from fear.

Not the fear of change, or cost, or commitment—but the fear of saying the wrong thing. And so many organisations, particularly in the built environment, are choosing to say nothing at all.

This is greenhushing—and it’s not just common. It’s becoming default.

In the latest episode of the Futurebuild Podcast, Charlie Martin, CEO and founder of The Anti-Greenwash Charter, names the problem plainly. Greenwashing may still grab headlines, but it’s greenhushing—silence, self-censorship, the retreat from visibility—that is quickly emerging as the greater threat.

And in an era when trust, transparency, and rapid climate progress are non-negotiable, it’s also a threat we can’t afford to ignore.

The Paradox: Progress Is Happening—But Fewer Are Talking About It

Drawing on insights from the first annual Green Claims Pulse Survey, a collaboration between Futurebuild, The Carbon Literacy Project, and Hattrick, Charlie outlines a stark contradiction: many organisations are more active on sustainability than ever, but less willing to talk about it.

• More than a third of built environment professionals said their organisations have pulled back from communicating sustainability progress.

• Two-thirds reported increased fear around greenwashing allegations over the past year.

“We’re seeing organisations doing good work, but feeling unsafe sharing it,” Charlie explains. “They’re afraid that if they get one word wrong, they’ll be accused of greenwashing.”

It’s a shift from spin to silence. And while that may feel safer, it risks something bigger: credibility, momentum, and public trust.

Marketing as a Catalyst—Not Just a Mouthpiece

But this isn’t a takedown of communications. It’s a call to elevate it.

In the podcast, Charlie argues for a reimagining of marketing’s role—not as a promoter of sustainability, but as a catalyst for it. When used with care and honesty, marketing becomes a bridge between intention and impact. Between ambition and accountability.

And it starts, he says, with radical transparency.

Not because transparency is fashionable—but because it’s functional. It’s the only thing that builds lasting trust.

“We don’t need perfection,” Charlie says. “We need brands to show their work. To be honest about what they’ve done, what’s still messy, and what they’re trying to get right.”

The Built Environment Is Being Watched—But Not Heard

The construction and built environment sector accounts for around 40% of the UK’s carbon footprint. Its decarbonisation isn’t a nice-to-have—it’s central to national climate targets.

And yet, according to the Green Claims Pulse Survey, only 18% of the public over 45 believe the industry is building a sustainable future. Gen Z is slightly more optimistic—but deeply sceptical of vague or performative claims.

The gap isn’t just in action. It’s in communication. The sector has the data, the pilots, the partnerships—but not always the confidence or frameworks to tell its story with integrity.

That’s where Charlie and the Anti-Greenwash Charter see an opportunity.

Radical Transparency Is the New Leadership

The Charter’s mission isn’t to police or shame brands—it’s to equip them. To create a culture where marketers, sustainability teams, and leadership have the tools, language and backing to communicate responsibly.

That includes encouraging brands to:

• Create internal green claims policies

• Align with trusted guidance like the CMA’s Green Claims Code

• Invite third-party review of sustainability communications

• Publish with confidence—not caution

These aren’t just box-ticking exercises. They’re credibility infrastructures.

And beyond that, the podcast hints at the rise of new mechanisms—like truMRK, a mark of communication integrity that provides an independent review of sustainability reports, checking not performance data, but how claims are communicated, and whether the language stands up to scrutiny.

In a regulatory grey zone, tools like these are helping bridge the gap between silence and substance.

Final Word: The Risk Isn’t Talking—It’s Disappearing

Greenhushing isn’t a scandal. It’s a warning. One that says: the pressure to communicate has become so intense, many would rather opt out than get it wrong.

But opting out has consequences too. It leaves the floor open for the loudest voices—not always the most honest ones. It weakens culture change. And it slows collective momentum when we can least afford delay.

If the built environment is going to meet the moment, it needs to find its voice again—not louder, but braver. Not perfect, but clear.

Because in the end, the climate doesn’t care how beautiful your brand story sounds. But people do. And people are how movements build.

Sustainability Communications with Confidence

If your organisation wants to protect its reputation, reduce greenwashing risk, and communicate sustainability with confidence, we’d love you to join us.

📢 Become a signatory of The Anti-Greenwash Charter.
Shape the future of responsible communication and show stakeholders what honest, trusted sustainability leadership looks like.

Join the Charter →