Every quotation on this page is reproduced word for word, exactly as the client gave it. We do not polish testimonials, for the same reason we do not polish claims: the record should say what actually happened.
We specialise in R&D-intensive and deep tech companies across sectors including life sciences, AI, robotics and medtech, and we work just as carefully with clients in engineering and manufacturing, and with the accountants who refer them. The awards and partnerships that sit alongside these testimonials are on our about page.
Life sciences and biotech
“We’ve worked with LimestoneGrey for several years and their professionalism, speed and clear approach make them a pleasure to work with. They quickly understand the complexities of our R&D and ensure the claims process is straightforward, fair and accurate.”
Sandy, Jellagen Limited
AI and machine learning
“Working with LimestoneGrey has been a genuinely positive experience. Their communication is clear and proactive and they are always on hand to answer queries and provide reassurance throughout the process. We have complete trust in their expertise and feel confident that our claims are being handled professionally.”
Dr Varghese, Laennec AI Limited
Robotics
“We have been very happy with the service provided by LimestoneGrey. In particular, their attention to detail has been exceptional, making the entire process smooth and reassuring for us.”
Marcus, Neurabotics Limited
Medtech
“Having LimestoneGrey’s expertise to guide us through each step made a huge difference. The process was explained clearly and handled with professionalism, ensuring everything met the required legislative standards. We’ve built a genuine partnership with LimestoneGrey and value their ongoing advice and shared commitment to innovation.”
Med-Tech client
Engineering and manufacturing
“We had excellent advice and support from LimestoneGrey in handling the submission of the claim and guiding us through the process.”
Trefor Jenkins, Director at Midtec Products
Across our client base
“After finding out about LimestoneGrey at a Welsh Start Up Convention, we were very interested in their services around R&D tax credits.
As a business, it’s very difficult to get top level consultants that you can rely on but LimestoneGrey has proven to be efficient, understanding and professional in their approach.”
Tony, Enviro365 Limited
“I cannot praise the team at LimestoneGrey highly enough. Their knowledge on R&D tax credits is exceptional and their ability to breakdown the complexity of the relief has been very welcomed.”
Robert, Dirt Driver Limited
Referral partners
Accountants and other professionals refer clients to us because R&D tax relief is all we do, so there is no conflict with their own services. More on how we work with accountants.
“In working with LimestoneGrey we’ve not only been able to refer clients to a reputable agency for a very important topic, but it’s also allowed us to become more educated on the topic as a result.
Our business is grounded in some strong values and we work with a very credible client base. LimestoneGrey matches our values and credibility expectations, it’s wonderful to have a relationship with such a professional and friendly associate!”
Jamie, Cennen Solutions Limited
If you would like to know what working with us feels like at first hand, get in touch or read how we work. We will give you a straight view on eligibility and value, and the fee is agreed before any work starts.
Written by Lisa James. Last reviewed July 2026.
