When Competitors Overclaim: How to Respond Without Getting Drawn Into a Fight

Established companies with strong sustainability credentials are facing a particular kind of competitive pressure. Newer entrants, often disruptor brands or well-funded startups, are making bold and sometimes unsubstantiated environmental or social claims. These claims can be persuasive.

They are often optimistic, simple and confident, and they are winning market share from companies whose communications are, in fact, more careful and more defensible.

This creates a difficult problem. The established company committed to responsible marketing and communications, knows its own claims are better supported. But saying so directly, by naming a competitor or implying their claims are weak, carries real risk. It can look defensive. It can look like point-scoring. It can invite scrutiny of the company’s own record in return. Most communications and legal teams will, understandably, advise against it.

So what can a company actually do?

The temptation to call it out

The instinct to respond directly is understandable. When a competitor’s claims are clearly thin, stretched or unverifiable, and those claims are winning customers, it is frustrating to stay silent.

Some companies do respond publicly, through comparison content, veiled references or direct rebuttal.

This approach carries two problems. It rarely lands well with audiences, who tend to read competitor criticism as self-interested regardless of how accurate it is. It draws attention to the competitor’s claims rather than the company’s own strengths.

A better route: prove your own standard, publicly

Rather than pointing at a competitor’s weaker claims, a company can demonstrate the strength of its own. This means having sustainability communications independently reviewed before publication, and making that review visible to the audience.

This is the thinking behind truMRK. Every piece of content that goes through the platform is assessed against three dimensions: whether the claims are substantiated, whether the language aligns with current regulatory guidance, and whether the context is complete rather than selectively presented. The result is a badge and a Transparency Report attached to the communication itself.

The effect is not to say “our competitor is wrong.” It is to say “here is how our claims were checked, and here is the evidence.”

The comparison is left for the audience to draw. This is a stronger position than direct criticism, because it does not depend on anyone believing the company’s word against a rival’s. It depends on process and evidence that the audience can inspect for themselves.

Why this matters more as competitors get bolder

Startups and disruptor brands often move faster than the regulatory environment.

The UK’s Green Claims Code, the CMA’s ongoing enforcement activity and the EU’s EmpCo are all narrowing the room for loosely supported claims.

But enforcement takes time, and in the interim, optimistic claims can still win attention and market share.

Companies that wait for regulation to catch up are ceding ground in the meantime. Companies that instead build a visible, third-party-verified standard into their own communications are doing two things at once.

They are protecting themselves against the regulatory risk that comes with overclaiming. And they are giving audiences, journalists and procurement teams a clear, positive reason to trust them over competitors whose claims have not been through the same process.

The credibility gap becomes the differentiator

The companies with the most defensible sustainability records are often the quietest about how defensible those records are.

That is a missed opportunity. Verification is not simply a compliance safeguard. It is proof that can be shown.

A company does not need to name a competitor or criticise their claims to make this point. It needs only to show its own working. In a market where confident claims are increasingly common and increasingly scrutinised, being able to demonstrate that a claim has been checked, and checked well, is becoming a genuine point of difference.

That is the opportunity truMRK is built around: helping companies with strong sustainability credentials get recognised for having them, by making the verification behind their communications visible rather than assumed.