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Head of Enquiry Defence
As Head of Enquiry Defence, Rhianon works with innovative companies to prove their eligibility for R&D Tax Relief to HMRC. Drawing on her deep enquiry-handling experience (and enthusiasm for debate), Rhianon looks to solve her clients’ investigations as quickly and favourably as possible, while strengthening their relationship with the tax authority.
Director
Kweku has been working with innovative sustainability-focused SMEs for over 10 years. His work involves overseeing all of GrantTree’s commercial engagements, service development, and the management of strategic partnerships, including VCs, accelerators, government bodies, financial institutions, and investors.
Protecting Your Claim and Your Reputation
Facing an HMRC enquiry? Looking for expert help to protect your claim size, minimise disruption, and expedite your investigation?
Our Enquiry Defence team can help. Learn more about our Enquiry Defence service.
Unrivalled experience
15 years’ filing and defending R&D tax claims
A respected name in R&D Tax Relief
We’ve built significant trust capital with HMRC
Harnessing HMRC expertise
Supported by our network of former inspectors
Complimentary for all R&D tax clients
Our experts will defend clients at no extra cost
Leading innovators trust us with their R&D Tax claim
Our Latest R&D Tax Enquiry Insights
Read our latest insights about R&D enquiries and HMRC’s compliance crackdown.
HMRC R&D Enquiries: A Complete Guide
The key things you need to know about enquiries, including how to protect your funding, and how to avoid them in the future.
20% of R&D Tax Claims Face HMRC Enquiry
A new government report revealed unprecedented increase in the number of HMRC investigations. Here's how it affects you.
HMRC Boosts R&D Enquiry Capacity
The involvement of new tax units has dramatically increased HMRC’s capacity to launch enquiries into R&D Tax claims.
Enquiries Are Rising Again. Here’s Why.
We’ve entered a new era of R&D Tax Relief compliance, one in which enquiries are becoming a lot more common.
What is an Enquiry Letter?
The first stage of an R&D Tax Credits compliance check or ‘enquiry’ is an initial letter from HMRC. Here’s what it looks like.
Four Expert Tips for Avoiding an HMRC Enquiry
Wondering how to avoid an enquiry in the future? Check out these expert tips.
What Our Clients Say
GrantTree’s R&D Tax Relief service is first-rate. It is efficient and compliance-focused, but, at the same, looks to optimise any claim through a detailed understanding of our technical projects.
GrantTree identified a range of costs we didn’t realise were eligible while making sure every number and letter in our submission was fully compliant with the latest legislation.
GrantTree's technical and financial specialists have been a real asset, working closely with our team to file consecutive successful, high-value R&D claims without delay.
The quality of the team’s work never fails to impress. I would strongly recommend GrantTree to any company looking for elite-level R&D Tax advice delivered through an effortless service.
GrantTree has been an invaluable companion during this time of dramatic change for the R&D Tax Relief scheme, giving me and my team complete peace of mind during the claim process.
GrantTree makes claiming R&D Tax Relief easy. The team is extremely proactive, whether it’s ensuring we’re claiming our entitlement or making sure we understand the changes to the scheme.
From data collection to submission, GrantTree’s process was exceptional. Our funding was paid out extremely quickly, which clearly reflects how well GrantTree understood and prepared our claim.
GrantTree has consistently been able to capture the information we provide and distil it into something HMRC understands. I don’t think another agency could do a better job.
GrantTree’s service was fast and responsive. They identified costs that we missed and increased our claim size. We’re happy customers and recommend working with them.
We’ve worked with GrantTree for a few years now. They take the pain and complexity out of claiming R&D tax credits so we can focus on developing our product.
Being an environmental engineering company, we are very specialised; GrantTree used their extensive expertise to identify qualifying work and maximise what we could claim back.
GrantTree made the whole process of applying for R&D Tax Credits completely painless. Their extensive experience is invaluable in navigating the complex rules.
GrantTree has been a joy to work with! They really care about our product and what we do. Would highly recommend!
We were using a standard accounting firm, but they didn't understand our vision. Virtual reality is quite a new technology and not everybody gets it.
GrantTree was the perfect tax credits partner. They really understood our technology and R&D, which helped us claim for every penny possible.
Grant Tree's approach to R&D Tax claims is a breath of fresh air. They take the weight off your shoulders, and do all the work of preparing the claim.
The money they have successfully claimed for us has played an important part in funding the growth of the business in a range of ways.
GrantTree has been great in helping us get R&D Tax Credits. Having never done this before, we were astounded by how easy and clear they made the entire process.
GrantTree helped us understand the concept and provided us with lots of guidance. I would be more than happy to recommend GrantTree to anyone.
The team were second to none in making the process as easy as possible and exceedingly helpful along every step. We look forward to working with them next year.
Without GrantTree, we would not have filed at all, and even if we had filed, we would not have maximised our claim in the way they managed.
We were previously working with another specialist when GrantTree approached us and were able to save us more than £10k in forecasted fees.
The value we have gained from GrantTree is significant to our business and helps us to invest appropriately in R&D. I would highly recommend the service to any company.
