R&D Tax Credit Companies in the UK: Guide to Providers
AC
Acumon Chartered Accountants·18 min read
Research and Development (R&D) tax relief has become an important source of funding for businesses investing in innovation across the UK. Whether developing new products, improving manufacturing processes, advancing software, or overcoming technical challenges, many organisations rely on specialist advisors to help identify qualifying activities and prepare robust claims.
The UK market includes a broad mix of R&D tax credit service providers. Some are specialist consultancies focused solely on innovation incentives, while others are full-service accountancy and advisory firms that combine R&D tax expertise with wider tax, audit, and business advisory services. The right choice often depends on factors such as the complexity of your projects, your industry, the level of technical support required, and the type of ongoing advice your business may need.
This guide highlights a selection of R&D tax credit service providers operating across the UK. Rather than ranking firms, its purpose is to provide practical context, outlining the services they offer, the organisations they typically support, and the areas where they bring particular expertise. Whether you're making your first claim or reviewing your current advisor, understanding the differences between providers can help you make a more informed decision.
Acumon
Acumon is a UK firm of chartered accountants and advisors providing R&D tax credit services to companies across the UK.
The firm works with organisations ranging from growing owner-managed businesses through to larger corporate groups operating across the UK. R&D tax credit services are designed to support tax compliance, corporation tax planning and the preparation of R&D tax relief claims where businesses undertake qualifying activities.
Acumon provides R&D tax credit services alongside corporation tax advice, tax compliance, business advisory and financial reporting support. Services are delivered through a structured approach designed to support accurate tax reporting, compliance and effective financial management.
Acumon holds a Public Interest Entity (PIE) audit licence, enabling the firm to support organisations subject to enhanced regulatory oversight in the United Kingdom. In addition to its UK statutory audit registration, the firm also maintains audit licences in the Cayman Islands, British Virgin Islands (BVI), Jersey and Isle of Man, supporting clients with international structures and cross-border reporting requirements.
Businesses undertaking qualifying research and development activities may be entitled to claim R&D tax relief as part of their corporation tax obligations. Professional support can help businesses prepare accurate information, maintain appropriate documentation and meet HMRC reporting requirements.
Acumon works with business owners, finance teams and management teams to support R&D tax claims while helping organisations strengthen tax compliance, financial reporting and governance arrangements.
R&D Tax Credit Capabilities
Acumon provides R&D tax credit services across a wide range of organisations.
These include:
owner-managed businesses and growing companies
UK companies and corporate groups
technology businesses and innovative companies
manufacturing businesses and engineering companies
companies undertaking qualifying R&D activities
businesses requiring corporation tax support
R&D tax credit engagements are typically led by experienced professionals with direct involvement throughout the engagement.
Regulatory Licences and Registrations
Acumon holds several audit registrations that enable it to support organisations operating across multiple jurisdictions.
These include:
UK statutory audit registration
Public Interest Entity (PIE) audit licence
Jersey audit licence
Isle of Man audit licence
Cayman Islands audit licence
British Virgin Islands audit licence
These registrations allow the firm to support organisations operating across both the UK and key international financial centres.
Core Services
In addition to R&D tax credit services, Acumon provides a range of services that support tax compliance and business planning.
These include:
R&D tax credit services
corporation tax advice
statutory external audit
group and subsidiary audits
Public Interest Entity (PIE) audits
tax compliance and business advisory
charity and not-for-profit audit
internal audit and governance reviews
risk management and compliance support
R&D tax credit work is often delivered alongside discussions with management regarding corporation tax, financial reporting and business planning.
Many businesses seek R&D tax credit support when preparing corporation tax returns, undertaking qualifying development activities or reviewing available tax reliefs.
Acumon works with businesses that are:
maintaining tax compliance
preparing R&D tax relief claims
strengthening financial reporting
supporting business growth
enhancing financial controls
Early engagement can help ensure that R&D tax credit claims are supported by appropriate documentation and remain aligned with corporation tax reporting requirements.
Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Phone: 020 8567 3451
S&W
S&W include R&D tax credit services within a wider tax and business advisory offering for companies carrying out qualifying research and development activities in the UK. Their approach combines technical and financial knowledge, with specialists from areas such as engineering, science, software and tax working together during the claims process. This allows them to assess projects from both a commercial and technical perspective while considering the latest HMRC guidance and legislative changes.
Across the claim process, they focus on identifying eligible activities, reviewing qualifying expenditure and preparing supporting documentation. Their work extends beyond submitting claims, with attention given to project tracking, risk management and the use of technology to collect and organise information. R&D tax advice is also connected to broader discussions around innovation, governance and future investment, making it part of a wider business planning process.
Key Highlights
R&D tax specialists with technical and tax expertise
Experience across engineering, software, science and manufacturing projects
Support with both SME and RDEC claims
Real-time project and expenditure tracking
Technology-enabled approach to claim preparation
Focus on compliance with current HMRC requirements
R&D advisory integrated with wider tax and business services
Services
R&D tax credit claims
Eligibility assessments
Technical and financial claim preparation
Real-time project tracking
Training and contract reviews
R&D expenditure reviews
Innovation funding and reinvestment advice
Research and Development Allowances (RDAs)
Contact Information
Website: www.swgroup.com
Twitter: x.com/S_W_Group
LinkedIn: www.linkedin.com/company/swgroupuk
Address: 45 Gresham Street, London EC2V 7BG
Phone: +44(0)204 617 55 00
Ayming
Ayming focuses on R&D tax credit services for businesses investing in innovation across a wide range of industries. Their process brings together tax specialists and sector experts who review technical activities alongside financial information to determine which projects and costs may qualify under the current UK R&D tax relief rules. Particular attention is given to producing claims that are supported by clear evidence and documentation.
As HMRC requirements have become more detailed, they place significant emphasis on preparing claims that follow current compliance standards. The process covers eligibility reviews, technical interviews, cost analysis and submission support, with continued assistance if additional questions arise after a claim has been filed. Their work is designed to create a structured record of qualifying activity that businesses can build on for future claims.
Key Highlights
Focus on UK R&D tax credit claims
Technical and financial specialists involved throughout the process
Evidence-led claim preparation
Support for the merged RDEC and ERIS schemes
Assistance with HMRC enquiries following submission
Project-level technical interviews and cost analysis
Process designed around current HMRC documentation requirements
Streets Innovation focuses on R&D tax relief and innovation funding for UK businesses carrying out qualifying research and development activities. Their services cover the full claims process, beginning with an initial eligibility review and continuing through scheme selection, claim preparation and submission. Alongside R&D tax relief, they advise on related areas such as Patent Box and grant funding, allowing businesses to consider different forms of support for innovation.
Beyond preparing new claims, they offer reviews of existing submissions for companies that have claimed previously or want an independent assessment of their position. This includes checking compliance with current legislation, reviewing potential risks and identifying areas where supporting evidence or technical explanations could be strengthened before or after submission.
Key Highlights
Focus on R&D tax relief and innovation incentives
Guidance on the merged RDEC and ERIS schemes
Support throughout the full R&D claim process
Technical and compliance reviews for existing claims
Address: St Chad’s Road, Netherstowe, Lichfield, Staffordshire, WS13 6TJ
Phone: 01543 395 550
Bracey's Accountants
Bracey's Accountants include R&D tax credits as part of their wider tax and accounting services for UK companies. Their approach centres on understanding how a business operates before deciding whether projects meet HMRC's definition of qualifying research and development. This helps shape the technical report and supporting information submitted alongside a corporation tax return.
The claims process is broken into manageable stages, making it easier for businesses to gather the information needed without interrupting day-to-day operations. Attention is given to identifying qualifying expenditure, preparing technical documentation and ensuring claims reflect the activities carried out during the accounting period. They also review claims for businesses looking for an alternative opinion or additional support.
Address: 18-20 High Street, Stevenage, Hertfordshire, SG1 3EJ
Phone: 01438 601363
PwC
PwC includes R&D tax credits within a broader innovation incentives practice that covers tax, capital investment and intellectual property. Their R&D advisory services are designed to help businesses understand changes to UK legislation, assess the impact on existing claims and develop processes for identifying qualifying activities across different parts of the organisation. The scope often extends beyond a single claim, taking into account how R&D incentives fit into wider tax and investment planning.
With recent changes to the UK's R&D tax relief rules, they place particular emphasis on compliance, documentation and the practical implications of the merged RDEC scheme and ERIS. Their work may include reviewing subcontracted activities, overseas expenditure and available incentives linked to innovation, while technology tools support the collection of project information and evidence throughout the claims process.
Key Highlights
R&D tax advisory within a wider innovation incentives practice
Guidance on the merged RDEC and ERIS schemes
Support with evolving UK R&D tax legislation
Technology-enabled claim preparation
Consideration of wider innovation incentives
Industry specialists across multiple sectors
Focus on documentation and compliance requirements
Services
R&D tax credit advisory
R&D claim preparation
RDEC and ERIS guidance
Patent Box advisory
Capital allowances advice
Innovation incentive reviews
R&D process optimisation
Technology-enabled evidence collection
Contact Information
Website: www.pwc.co.uk
Facebook: www.facebook.com/PwCUK
LinkedIn: www.linkedin.com/company/pwc-uk
Instagram: www.instagram.com/pwc_uk
Address: 1 Embankment Place, London, WC2N 6RH, United Kingdom
Phone: +44 (0)20 7583 5000
Source Advisors
Source Advisors specialise in R&D tax relief and innovation incentives, working directly with businesses as well as accountancy firms that outsource specialist R&D work. Their services cover the preparation of R&D tax claims alongside related areas such as Patent Box, intellectual property and international tax planning. Viewing innovation as an ongoing process allows them to connect tax relief with wider commercial and IP considerations.
As well as supporting new claims, they carry out reviews of existing submissions and provide assistance where HMRC enquiries arise. Their offering includes technical assessments, compliance-focused documentation and advice for accounting practices looking for specialist support on complex R&D matters. This combination of tax and intellectual property expertise reflects a broader approach to innovation incentives beyond individual tax claims.
Key Highlights
Specialist focus on R&D tax relief and innovation incentives
Support for businesses and accountancy firms
Compliance-led claim preparation
HMRC enquiry review services
Patent Box and intellectual property advisory
International tax planning for innovation activities
Lexmore Tax Advisory focuses on helping UK businesses prepare R&D tax relief claims under the current legislation. Their process follows each stage of a claim, beginning with an eligibility assessment and continuing through project analysis, cost reviews, technical reporting and submission. Guidance is based on the latest R&D tax relief rules, including the merged RDEC scheme and the Enhanced R&D Intensive Support (ERIS) scheme for eligible companies.
Alongside preparing claims, they support businesses with compliance and ongoing communication after submission. Their work includes reviewing qualifying expenditure, documenting technical uncertainties and explaining how projects meet HMRC's definition of research and development. Related tax incentives, including Patent Box and capital allowances, are available for businesses looking at innovation from a wider tax planning perspective.
Key Highlights
Focus on UK R&D tax relief and compliance
Support for the merged RDEC and ERIS schemes
Structured claim process from assessment to submission
Technical and financial review of qualifying projects
BDO includes R&D tax incentives within a broader innovation and tax advisory practice, helping businesses identify projects that may qualify for UK government support. Their approach looks beyond traditional research environments, recognising that improvements to products, services, internal processes or business operations may also fall within the scope of R&D tax relief. Alongside claim preparation, they consider other innovation incentives that could be relevant depending on the nature of the project.
One part of their approach is reviewing both completed and ongoing activities to identify qualifying expenditure and ensure claims reflect current legislation. Their team brings together specialists from technical and financial backgrounds, allowing claims to be assessed from more than one perspective. Support extends to HMRC enquiries, Patent Box and innovation grants, giving businesses access to related tax reliefs where appropriate.
Key Highlights
R&D tax incentives as part of wider innovation advisory
Technical and financial specialists involved in claims
Support across different industries
Guidance on current HMRC legislation
Assistance with R&D tax enquiries
Patent Box advisory
Innovation grant support
Services
R&D tax credit claims
R&D eligibility reviews
HMRC enquiry support
Patent Box advisory
Innovation grant guidance
R&D tax claim reviews
Intellectual property tax incentives
Research and Development Credits and Allowances advice
Clearcut Accounting offers R&D tax credit services for businesses developing new products, services or processes, as well as those improving existing ones. Their process begins with assessing whether a company's activities meet HMRC's definition of qualifying research and development before reviewing the costs connected to those projects. The guidance reflects the current UK R&D tax relief framework, including recent legislative changes and documentation requirements.
Throughout the claim, attention is given to both the technical and financial aspects of the submission. They prepare supporting reports, review qualifying expenditure and manage communication with HMRC where required. Businesses with previous R&D activity can request a review of earlier claims to identify projects or costs that may not have been included under the rules that applied at the time.
Key Highlights
R&D tax relief advice for UK businesses
Eligibility assessments before claims are prepared
FI Group specialise in R&D tax credits and innovation funding, supporting businesses that invest in scientific or technological development. Their services cover the full claims process, from assessing project eligibility through to preparing technical evidence and cost documentation for submission with a corporation tax return. They work across a wide range of sectors, with consultants who have experience in disciplines such as engineering, software, manufacturing and life sciences.
For businesses already managing an HMRC enquiry, they review the original claim, examine supporting evidence and prepare responses that align with current compliance requirements. Their offering extends beyond UK claims, coordinating R&D incentives across multiple countries for organisations with international operations. This gives businesses a consistent approach to innovation funding while meeting local tax rules in each jurisdiction.
Key Highlights
Specialist focus on R&D tax credits and innovation funding
Sector specialists across technical and scientific industries
Address: 9-10 St Andrew Square, Edinburgh EH2 2AF, United Kingdom
Phone: +442030483991
Gorilla Accounting
Gorilla Accounting includes R&D tax relief within their wider accounting and corporation tax services for limited companies. Their approach starts with identifying whether a project meets HMRC's definition of qualifying research and development before reviewing the expenditure linked to those activities. The guidance is designed for businesses across different sectors, reflecting the fact that qualifying R&D is not limited to technology or laboratory-based work.
From the early assessment through to submission, the claim is prepared alongside the company's corporation tax return, with technical justification forming part of the supporting documentation. Qualifying costs are reviewed in line with HMRC guidance, and businesses considering Advance Assurance can receive assistance with that process where appropriate. Ongoing accounting support means R&D tax advice can be incorporated into wider tax planning throughout the year.
Key Highlights
R&D tax relief for UK limited companies
Initial project eligibility assessments
Technical justification prepared using HMRC guidance
Corporation tax and R&D claim support
Assistance with Advance Assurance applications
Qualifying expenditure reviews
R&D advisory linked with ongoing accounting services
Address: Belmont Suite, Paragon Business Park, Chorley New Road, Horwich, Bolton BL6 6HG
Phone: 0330 107 9674
Frazier & Deeter
Frazier & Deeter position R&D tax credits as part of their wider tax incentive and relief services, supporting businesses that invest in research and development. Their approach covers the complete claims process, from assessing qualifying activities to preparing and submitting claims under the current UK rules. The service is designed to help businesses understand how R&D tax relief fits into their wider tax position while meeting HMRC requirements.
Where claims are subject to HMRC enquiries, they communicate directly with the tax authority and prepare supporting information to address questions raised during the review process. They also advise on R&D intensity planning for businesses that may qualify for enhanced tax incentives, helping companies understand how changes in expenditure can affect eligibility under the current regime.
Address: Level 32, Leaf A, Tower 42, 25 Old Broad Street, London, EC2N 1HQUnited Kingdom
Phone: +44 (0) 203 318 3976
Kreston Reeves
Kreston Reeves incorporated R&D tax relief into a broader tax advisory service for businesses investing in innovation across different industries. Their advisers review projects that seek advances in science or technology, identify qualifying expenditure and prepare claims that align with HMRC requirements. Experience across sectors such as manufacturing, engineering, construction, agriculture and creative industries reflects the wide range of businesses that may qualify for relief.
Every claim is developed with supporting information that explains both the technical activities and the associated costs. Alongside claim preparation, they advise on related tax matters including Patent Box, grants and international tax considerations where these are connected to innovation projects. R&D tax advice is delivered in line with the Professional Conduct in Relation to Taxation (PCRT), providing a structured approach to compliance.
Key Highlights
R&D tax relief across a broad range of industries
Guidance on SME and RDEC schemes
Support throughout the claims process
Advice aligned with PCRT standards
Patent Box and grant funding advisory
International tax support for innovative businesses
Compliance-focused claim preparation
Services
R&D tax credit claims
Eligibility assessments
Qualifying expenditure reviews
Technical claim documentation
Patent Box advisory
Grant funding guidance
International tax support for R&D activities
HMRC compliance assistance
Contact Information
Website: www.krestonreeves.com
Twitter: x.com/KrestonReeves
LinkedIn: www.linkedin.com/company/kreston-reeves
Address: 2nd Floor, 168 Shoreditch High Street, London, E1 6RA
Phone: +44 (0)330 124 1399
Leyton
Leyton specialises in R&D tax credits and innovation funding, supporting companies that invest in scientific and technological development across a wide range of industries. Their consultancy combines technical, engineering and tax expertise to assess qualifying projects, identify eligible expenditure and prepare claims that reflect current HMRC requirements. Alongside R&D tax relief, they advise on related incentives such as Innovation Funding, Patent Box and Capital Allowances where these are relevant to a business's innovation activities.
Claims are developed through a structured process that includes reviewing technical uncertainties, documenting project evidence and checking compliance before submission. Businesses that already claim R&D tax relief can request an independent review to identify qualifying costs that may have been missed or to strengthen future submissions. Where HMRC opens an enquiry, they assist with preparing responses and supporting documentation throughout the review.
Key Highlights
Specialist focus on R&D tax credits and innovation funding
Choosing an R&D tax credit advisor is not simply about finding a firm that can prepare a claim. Businesses often look at the provider's experience with similar projects, their understanding of HMRC requirements, the level of technical expertise available, and whether R&D advice fits alongside other tax or business services they may need.
As this guide shows, the UK market includes specialist R&D consultancies as well as larger accountancy and advisory firms, each with a different approach. Comparing their services, areas of expertise and claim processes can help businesses identify a provider that matches the complexity of their projects and the support they are looking for. Taking the time to make that comparison can lead to a more informed decision and a smoother claims process.
AC
Written by the Acumon team
Acumon is an ICAEW-registered firm of chartered accountants and registered auditors
based in London, with offices in Pitstone, Aylesbury and Bournemouth. Need advice on
anything covered here? Talk to us.
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