Choosing a Specialist R&D Tax Adviser

Why does choosing the right R&D adviser matter?

R&D tax relief is one of the most valuable forms of support available to UK companies investing in innovation, but the ground has shifted under it. The rules were reformed and simplified into a single merged scheme for accounting periods beginning on or after 1 April 2024, with a separate Enhanced R&D Intensive Support (ERIS) scheme for loss-making, R&D-intensive SMEs, meaning the detail is more demanding than some businesses expect.

Merged scheme

The R&D tax relief scheme that replaced the separate SME and RDEC reliefs for accounting periods beginning on or after 1 April 2024.

Enhanced R&D Intensive Support (ERIS)

Additional relief for loss-making SMEs that spend a high proportion of their total costs on qualifying R&D.

At the same time, HMRC scrutiny rose sharply. Between 2022 and 2026 it ran a volume compliance approach that took the enquiry rate from around one in a hundred claims to roughly one in five at its peak. That approach has now ended, and from 2026 HMRC is handling R&D compliance through its Wealthy and Mid-sized Business Compliance directorate with a focus on more complex risk. Enquiry rates for smaller claims have fallen, but the expectations on evidence and record keeping have not, and any claim can still be selected for enquiry, including at random.

The practical effect is simple. A well-prepared claim from a capable adviser is more likely to be paid and to withstand a check. A weak one is more likely to be challenged, delayed, reduced or reclaimed, sometimes with penalties. The adviser you choose is now one of the biggest variables in that outcome.

What makes an adviser a genuine specialist?

The word specialist is used loosely. During the years when the relief was generous and lightly policed, a large number of firms entered the market, some with deep technical and tax expertise, some with very little. Currently, there is no single official register of good R&D advisers, so the label alone tells you little.

A genuine specialist needs to combine tax knowledge, an understanding of how HMRC applies the rules and enough technical grasp to explain your work in the context of the right R&D tax terminology. They should involve the people who actually did the work, your competent professionals, rather than writing a narrative around them. They should also be clear about who actually helps to prepare the R&D technical narrative and financial analysis within their team, and what R&D tax experience, or relevant sector knowledge, those people have.

Why is it so hard to tell good advisers apart?

This is the real problem, and it is the reason Adviser Radar exists. Most guidance on choosing an adviser gives you a sensible list of things to check: are they experienced, do they have a good reputation, are they appropriately qualified, do they over-promise. All good advice. None of it is easy to verify from the outside.

An adviser's website will tell you they are experienced. It will not tell you exactly how their claims have fared under enquiry, how the firm is governed, whether it files its own affairs on time, or whether it has a habit of promising outcomes it cannot control. Those signals exist, but they are scattered across Companies House, adviser websites, public registers, review platforms and other sources. Most businesses researching a single adviser will not have the time to assemble them. So most people choose on presentation, price or a referral, and hope.

Our view is not that any single one of these signals decides the question. It is that they are underweighted because they are hard to see, and that a claimant should be able to weigh them properly. That is the gap the Adviser Radar platform is built to close.

How should you weigh the different signals?

Not every signal will matter equally in every case. The right balance depends on your circumstances, the size and complexity of the claim, your sector and the level of support you may need if HMRC asks questions. There is no single test for choosing the right adviser. A better approach is to work through the decisions that matter most to you.

How Adviser Radar helps

Adviser Radar is a directory of UK R&D tax advisers. It is designed to help claimants compare advisers using information that is often difficult to find in one place.

• Each adviser has a profile built from public records: Companies House filing history and company status, professional body membership, adverse media coverage and information published on the adviser's own website.
• Every adviser also carries a Radar Assessment, a four-band rating drawn from those records. Payment never influences it. The aim is to put the checks you would run yourself, and some you probably wouldn't think to, in one place before you commit to an adviser.
• Adviser Radar does not sell paid ranking positions. A paid profile can improve how an adviser presents information on the platform, but it does not buy a higher ranking.
• You can start by using the adviser search.

What Adviser Radar cannot tell you

Adviser Radar is a starting point for research, not a definitive judgement, recommendation, endorsement or guarantee. It cannot tell you whether a particular adviser is right for your exact project. It cannot guarantee claim quality, HMRC outcomes or future adviser conduct. It is designed to help you make a better-informed comparison before you decide who to contact.

You should still ask direct questions, review the adviser's proposal carefully and make sure you understand who is responsible for the claim.