UK startups face AI messaging test as new Message Market Fit service launches
More than two-thirds of UK startups may be struggling to communicate their value clearly to AI-powered search tools, according to new research released alongside the launch of the UK’s first AI-powered Message Market Fit service.
Positive, a London-based PR and credibility consultancy, has partnered with Fast Growth Advisors, a French-founded specialist in Message Market Fit (MMF) for B2B startups, to bring the methodology to the UK market.
The partnership aims to help startups assess how effectively their marketing messages communicate their value to customers, particularly as AI assistants become an increasingly important part of the B2B buying process.
An analysis of publicly available information from 370 funded UK startups found that 68% were difficult for AI engines to interpret, while the average message clarity score was 45.5 out of 75. No company achieved a score above 85% of the potential maximum, according to the report.
The findings suggest that unclear positioning could be a widespread issue across the UK startup ecosystem, regardless of funding stage. The analysis identified messaging challenges among companies ranging from pre-seed businesses to those that had raised Series B funding and beyond.
AI is changing how B2B buyers discover suppliers
The launch comes as businesses increasingly turn to AI tools to research potential suppliers and evaluate competing products.
According to The Answer Economy, a G2 study of 1,076 B2B software buyers published in April 2026, 51% of respondents said they started purchase research in an AI assistant more often than in a search engine. A further 53% said AI search made their research more productive, while one in three reported buying from a vendor they had not previously heard of.
These findings highlight the growing importance of clear, consistent and easily interpretable messaging. Companies that struggle to explain what they do, who they serve and how they differ from competitors risk being overlooked as buyers use AI tools to identify and compare potential suppliers.
The Message Market Fit methodology uses proprietary AI techniques to evaluate companies’ marketing claims against customer needs. The aim is to identify gaps between how businesses describe their products and services and what prospective customers are looking for.
By assessing messaging before companies commit to marketing and communications campaigns, the service is intended to help founders and communications teams make more informed decisions about positioning.
Moving beyond guesswork
Paul Maher, founder of Positive, said the approach could help businesses identify weaknesses in their messaging before investing in campaigns.
“Credibility is about consistency. Unsuccessful awareness campaigns built on unclear messaging cost the same as those that excel,” Maher said.
“The key is sharper differentiators which mirror the fast-changing requirements of buyers. Before MMF, communications professionals relied on gut feel. There was no objective gauge of Message Market Fit. Now, and for free, we can objectively audit messaging before committing to expensive marketing communications.”
Hervé Dhélin, founder of Fast Growth Advisors, said the UK was a natural next market following the company’s work in France.
“When we measured the booming French startup scene, the question we heard most, from investors and founders alike, was: ‘Is this solely a French, or a European, startup problem?’ Europe’s largest ecosystem, the UK, is the right place to find out,” Dhélin said.
The two founders previously worked together in senior roles at Mercury Interactive, which was acquired by Hewlett Packard Enterprise for $4.6 billion.
Free report offers practical recommendations
The companies have made an English-language version of the Message Market Fit report available free of charge. The report outlines the findings from the UK startup analysis and offers practical guidance on improving marketing clarity.
Businesses seeking a more detailed assessment can also commission bespoke Message Market Fit audits, which examine individual companies’ positioning, identify messaging weaknesses and recommend potential improvements.
The partnership comes as startups face increasing pressure to demonstrate differentiation in crowded markets and ensure their value propositions are understood by both human audiences and AI-powered discovery tools.
For Positive and Fast Growth Advisors, the objective is to give founders a more evidence-based way to evaluate their messaging before committing resources to marketing and communications.
As AI becomes a more prominent part of the buying journey, the ability to communicate a clear and credible value proposition could become an increasingly important factor in whether startups make it onto prospective customers’ shortlists.
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