The Competition and Markets Authority (CMA) is often viewed as a watchdog. whose job includes identifying any form of misleading environmental claims and punishing offenders. Nevertheless, while its growing power performs such an important role, it does even more: it changes the way companies address sustainability issues.

On the face of it, stricter regulation is obvious good news as it increases requirements, prevents vagueness, and protects consumers. However, there is another outcome that cannot be ignored.

From Greenwashing to Greenhushing

With growing pressure, more organizations find themselves being less risky – not only with their communication, but even with communicating in the first place.

This has given birth to a new phenomenon of “greenhushing”:

Organizations are making real sustainable efforts
However, they do not publicize them

Such lack of communication is not caused by inactivity. It is caused by doubts and fear.

Fearing legal troubles and reputational risks, organizations ask themselves:

If these questions remain unanswered, it’s best not to make any claims at all.

  • Can we say that?
  • Is our claim too general?
  • Have we provided enough evidence?

A Shift from Storytelling to Proof

The CMA has effectively raised the bar for sustainability communication.

In the past, companies could rely on broad, persuasive language:

  • “eco-friendly”
  • “sustainable”
  • “good for the planet”

Today, these claims are increasingly seen as high – risk unless they are:

  • Specific
  • Measurable
  • Fully substantiated

This marks a fundamental shift:

Sustainability communication is moving from storytelling to evidence-based claims.

The Real Challenge: Translation, Not Intention

Most companies are not trying to mislead consumers. The real issue is not intent-it is translation.

Businesses often have:

  • Internal sustainability data
  • Operational improvements
  • Measurable progress

But they struggle to convert this into messaging that is:

  • Clear to customers
  • Accurate in meaning
  • Defensible under regulatory scrutiny

This creates a gap between what companies are doing and what they feel safe saying.

What This Means for the Future

The CMA is not just enforcing rules-it is redefining the language of sustainability.

The companies that will succeed in this new environment are not those making the boldest claims, but those that can:

  • Translate complex data into clear statements
  • Support every claim with credible evidence
  • Communicate with precision rather than exaggeration

In other words, the competitive advantage is shifting from visibility to credibility.

Final Insight

The biggest impact of the CMA is not that it is stopping greenwashing-it is that it is forcing companies to rethink how they communicate sustainability altogether.

For many, this creates hesitation.
For others, it creates an opportunity.

Those who can translate sustainability data into clear, compliant, and credible claims will not just adapt-they will lead.