Reward Your


Claim up to 33p for every £1 spent on R&D activities.

The R&D tax credit specialists

Who We Are

LimestoneGrey is a leading independent firm of Chartered Tax Advisers specialising in research and development (R&D) tax credit claims – this is all we do.

We are no ordinary tax consultancy.  We provide a refreshingly unique approach to R&D tax relief claims which makes the claim process straightforward and stress free.

Each claim is handled by a chartered tax professional, providing you with peace of mind that you are in safe hands. This is one of the reasons why we are trusted by so many companies and accountancy practices across the UK. Contact our offices in Cardiff or Bristol today to discover how we can help you.

“We cannot praise the team highly enough for their professionalism, diligence and customer care and would certainly recommend them as the best choice to make a successful claim.”

Engineering Design Company, South Wales.

“Many thanks for your help at the end of last year.  We especially appreciate your dedication to ensure the claims made the deadline, at what was a very busy time for us.  I certainly agree that R&D claims are worthwhile and we will certainly want to make another claim.”

Engineering Company, West Wales.

“The team made the R&D Tax Credit simple and understandable and was clear about the process every step of the way.  They helped us get a successful outcome.”

Software Company, West Wales.

We have been working with LimestoneGrey since they started. Their knowledge on R&D claims is exceptional and we have no hesitation in referring our clients to them.

Advantage Accountancy & Advisory Ltd, Cardiff

Having experienced the preparation and submission of several R&D submissions in the past, I knew how onerous and time-consuming the process could be. I was only too pleased to meet with the team and be reassured that he would simplify the process and could provide advice and direction as to how the submission should be put together. We were happy with the size of the claim as it was larger than we anticipated, and due to the quality of the submission HMRC quickly processed the claim.

Fintech Company, Cardiff

We have experience and expertise in working with a range of companies, whatever the size or sector. No two claims are ever the same. We tailor our service to meet the needs of each client, guiding you through every stage of the process.


Large Companies

Accountants & Advisers

Contact Us


Low fees


Contingent on success


100% success record


Chartered tax advisers


No fixed term contract

Find Us


15 Neptune Court, Vanguard Way, Cardiff, CF24 5PJ


One Temple Quay, 5th Floor, Temple Back East, Bristol, BS1 6DZ

0330 223 4 223

LimestoneGrey is a trade mark of LimestoneGrey Limited.  All rights reserved.

© 2019 LimestoneGrey Limited.


Company registration no. 10714268 | VAT registration no. 270 2858 01.


LimestoneGrey Limited is a firm of Chartered Tax Advisers.