This practical guide provides an overview of companies offering R&D tax relief services in London, helping readers understand the different types of support available in this area. Rather than ranking companies, it looks at a selection of organisations with different backgrounds, service approaches, and areas of expertise. Some companies provide broad tax and advisory services, while others focus specifically on R&D claims and innovation incentives. The aim is to give useful context on who these companies work with, what they focus on, and which options may fit different business requirements.
Acumon
Acumon provides R&D tax relief services in London, supporting businesses with the preparation of evidence-led claims under the UK R&D tax relief regime. The firm works with companies that have undertaken qualifying research and development activities and need support assessing eligible expenditure, preparing technical narratives, and aligning claims with HMRC expectations.
The R&D tax relief service combines tax knowledge with a structured review of project activities and supporting documentation. Acumon helps businesses identify qualifying costs, understand the requirements of the current merged R&D scheme, and prepare claims based on the technical details of their development work.
Acumon’s approach focuses on evidence-led claim preparation, working with technical teams and finance departments to build documentation that explains the nature of the R&D activity and the costs connected with it. The firm also coordinates R&D claims with wider tax advisory services, including areas such as Patent Box and corporation tax planning.
The firm supports businesses across different sectors where innovation, technical development, and problem-solving activities form part of their operations. R&D tax relief work can involve software development, engineering, product development, data-related projects, and other activities where companies are seeking advances in science or technology.
Acumon works with growing businesses and established organisations that need practical support with R&D tax relief compliance. The service is designed to help finance teams and business owners prepare accurate claims while maintaining appropriate documentation for HMRC review.
R&D Tax Relief Capabilities
Acumon provides R&D tax relief support for businesses involved in qualifying innovation and technical development activities.
These include:
- R&D eligibility assessments
- Qualifying expenditure reviews
- Technical narrative preparation
- R&D claim calculations
- HMRC-aligned claim documentation
- Coordination of R&D claims with wider tax planning
The service combines financial analysis with an understanding of the technical aspects behind R&D projects, helping businesses present their activities and expenditure clearly within the requirements of the relief scheme.
Regulatory Licences and Registrations
Acumon operates as a UK accountancy and tax advisory practice supporting businesses with tax compliance and advisory matters.
These include:
- UK Chartered Accountancy registration
- Professional tax advisory practice standards
- Compliance support for UK corporation tax requirements
- Experience supporting HMRC-related tax processes
- Tax advisory services for UK businesses
- Support with documentation required for tax relief claims
The firm’s R&D tax relief work is delivered within the wider framework of UK tax compliance and advisory services, with claims prepared to meet the documentation and reporting expectations associated with HMRC reviews.
Core Services
Acumon provides R&D tax relief services alongside broader tax and accounting support.
These include:
- R&D Tax Relief Claims
- R&D Eligibility Assessments
- Qualifying Cost Analysis
- Technical Narrative Support
- HMRC Compliance Support
- Patent Box Advisory
- Corporation Tax Planning
Acumon supports businesses at different stages of the R&D claim process, from initial assessment of potential qualifying activities through to preparation of supporting information and integration with wider tax planning.
The service is relevant for organisations that are:
- Developing new products or processes
- Creating or improving software solutions
- Investing in technical innovation
- Reviewing previous R&D activities
- Preparing documentation for HMRC requirements
Early assessment of R&D activities can help businesses identify qualifying areas and maintain clearer records of expenditure and technical development work.
Contact Information
- Website: acumon.com
- Phone: 020 8567 3451
- Email: [email protected]
- Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Unicorn Accountants
Unicorn Accountants provides R&D tax credit services for SMEs, helping businesses assess whether their activities meet eligibility requirements and prepare supporting documentation. The firm works with companies that need assistance understanding the technical and financial aspects of R&D claims.
The service includes reviewing projects against HMRC criteria, preparing technical reports, and supporting the claim process. This approach can suit smaller businesses that do not have dedicated tax teams handling R&D submissions internally.
Key Facts
- Ideal for: SMEs exploring R&D tax relief eligibility
- Core services: Eligibility reviews, technical reports, R&D claim support
- Specialization: SME accounting and tax support
- Location: London, UK
Contact Information
- Website: www.unicornaccountants.co.uk
- Phone: 020 8064 0454
- Email: [email protected]
- Address: 5 Merchant Square, London, W2 1AY
- LinkedIn: www.linkedin.com/company/unicorn-accountants
- Facebook: www.facebook.com/Unicorn-Accountants-100801635208217
- Twitter: x.com/UnicornAccounts
- Instagram: www.instagram.com/unicornaccounts
Pearl Lemon Accountants
Pearl Lemon Accountants provides R&D tax credit support focused on claim preparation, documentation, and HMRC compliance. The firm works with businesses across technology, engineering, and other sectors where technical development activities may qualify for relief.
Its services include reviewing qualifying projects, identifying eligible costs, preparing technical documentation, and supporting responses to HMRC enquiries. The firm also works with businesses managing more complex structures and multi-location operations.
Key Facts
- Ideal for: Businesses needing structured R&D claim documentation
- Core services: Eligibility assessment, technical reports, expenditure analysis, HMRC support
- Specialization: R&D tax credit compliance
- Location: London service coverage
Contact Information
- Website: pearllemonaccountants.com
- Phone: +442071833436
- Email: [email protected]
- Address: 38 Cursitor St, Chancery Ln, London, United Kingdom WC2A 1EN
- LinkedIn: www.linkedin.com/company/pearl-lemon-accountants
- Facebook: www.facebook.com/people/Pearl-Lemon-Accountants/61562980168073
- Twitter: x.com/accountant76555
ForrestBrown
ForrestBrown focuses specifically on R&D tax relief and innovation incentives, helping businesses prepare claims and manage the technical requirements associated with HMRC submissions. The firm works with companies ranging from growing SMEs to larger organisations that need specialist support with innovation-related tax incentives.
Its services cover R&D tax relief claims, innovation incentives, and guidance on documenting qualifying activities. The company’s specialist approach is focused on connecting technical project information with the financial requirements of an R&D claim.
Key Facts
- Ideal for: Companies with technical projects requiring specialist R&D claim support
- Core services: R&D tax relief claims, innovation incentives advisory
- Specialization: Research and development tax incentives
- Location: London and UK operations
Contact Information
- Website: forrestbrown.co.uk
- Phone: +442035195080
- Email: [email protected]
- Address: Dashwood, 69 Old Broad St, London, EC2M 1QS
- LinkedIn: www.linkedin.com/company/forrestbrown-tax-consulting
- Twitter: x.com/forrestbrowntax
Grant Thornton
Grant Thornton provides R&D tax incentive advisory services as part of its wider tax practice. The firm helps businesses prepare R&D claims, review eligible activities, and manage the compliance requirements involved in submitting claims.
Its R&D team works with companies that need support combining tax expertise with technical understanding of innovation projects. The service is part of a broader corporate tax offering used by organisations with more complex reporting needs.
Key Facts
- Ideal for: Medium-sized and larger businesses requiring tax advisory support
- Core services: R&D tax incentive advice, claim preparation, compliance support
- Specialization: Corporate tax and innovation incentives
- Location: London and UK offices
Contact Information
- Website: www.grantthornton.co.uk
- Phone: +44 (0)20 7383 5100
- Email: [email protected]
- Address: 8 Finsbury Circus London EC2M 7EA
- LinkedIn: www.linkedin.com/company/grant-thornton-uk
- Instagram: www.instagram.com/gt_trainees
RCK Partners
RCK Partners is a London-based tax consultancy that provides R&D tax credit services alongside other business incentive advisory support. The company helps businesses identify qualifying R&D activities, assess eligible expenditure, prepare supporting documentation, and manage the claim process in line with HMRC requirements. Its work covers areas such as R&D tax credits, Patent Box relief, capital allowances, and tax enquiry resolution. RCK Partners works with organisations that need specialist guidance on innovation-related tax incentives and support with navigating complex UK tax relief schemes.
Key Facts
- Ideal for: Businesses seeking specialist tax incentive advice
- Core services: R&D tax credits, Patent Box relief, enquiry support
- Specialization: Tax incentives and relief schemes
- Location: London, UK
Contact Information
- Website: www.rck.partners
- Email: [email protected]
- Phone: 020 3310 3904
- Address: 70 Gracechurch Street, London, EC3V 0HR.
- LinkedIn: www.linkedin.com/company/rck-partners
- Instagram: www.instagram.com/rckpartners
Source Advisors
Source Advisors provides R&D tax credit consulting and innovation incentive services for UK businesses, supporting organisations with claim preparation, R&D activity reviews, and guidance on available tax incentives. The company helps businesses assess qualifying projects, analyse eligible costs, and prepare technical documentation required for R&D relief claims. Its services include R&D tax relief support, Patent Box advisory, intellectual property consulting, and outsourced R&D claim services for businesses and accounting firms. Source Advisors works with organisations that need specialist support with innovation-related tax incentives and HMRC documentation requirements.
Key Facts
- Ideal for: Businesses needing specialist R&D tax expertise
- Core services: R&D tax claims, Patent Box, IP advisory
- Specialization: Innovation incentives
- Location: UK operations with London coverage
Contact Information
- Website: sourceadvisors.co.uk
- Phone: 01727 738600
- Email: [email protected]
- Address: 20 Farringdon Street, London, EC4A 4AB
- LinkedIn: www.linkedin.com/company/sourceadvisorsuk
Gerald Edelman
Gerald Edelman provides R&D tax relief advice through its tax advisory services. The firm helps businesses assess eligibility for R&D claims and identify opportunities connected with qualifying innovation activities.
The company combines R&D tax support with wider accounting and advisory services, making it relevant for businesses that prefer to manage tax relief alongside broader financial planning.
Key Facts
- Ideal for: Businesses wanting R&D support from an accounting firm
- Core services: R&D tax relief advice, tax consultancy
- Specialization: Business advisory and tax services
- Location: London, UK
Contact Information
- Website: www.geraldedelman.com
- Phone: +4402072991400
- Email: [email protected]
- Address: 73 Cornhill, London, EC3V 3QQ
- LinkedIn: www.linkedin.com/company/geraldedelman
- Facebook: www.facebook.com/Gerald-Edelman-426784981051167
- Instagram: www.instagram.com/geraldedelmanuk
R&D Tax Specialists
R&D Tax Specialists focus specifically on helping companies prepare and submit R&D tax credit claims. The company supports businesses with identifying qualifying research and development activities, reviewing eligible costs, and preparing the documentation needed for successful submissions. Its specialist approach is centred around R&D incentives rather than broader accounting services, making it suitable for organisations that need dedicated assistance with the claim process. The company works with businesses seeking support in understanding R&D relief requirements, improving claim accuracy, and managing the administrative aspects connected with HMRC submissions.
Key Facts
- Ideal for: Businesses looking for dedicated R&D tax specialists
- Core services: R&D tax credit claims, eligibility assessment
- Specialization: R&D incentives
- Location: UK services
Contact Information
- Website: randdtaxspecialists.co.uk
- Phone: 01327 317947
- Email: [email protected]
- Address: Innovation Centre, Silverstone Park, Silverstone, Towcester, Northamptonshire, NN12 8GX
- LinkedIn: www.linkedin.com/company/r-and-d-tax-specialists-ltd
Myriad Associates
Myriad Associates provides R&D tax relief advisory services for UK businesses, helping organisations identify qualifying development activities and prepare supporting information for claims. The company focuses on innovation incentives, including R&D tax credits, Patent Box relief, and other government-backed schemes.
Its approach combines technical assessment with tax expertise, supporting businesses that need assistance documenting their R&D projects and understanding available incentives. Myriad Associates works with companies across sectors where research, development, and technical problem-solving form part of their operations.
Key Facts
- Ideal for: Businesses seeking specialist innovation incentive advice
- Core services: R&D tax credits, Patent Box, innovation funding support
- Specialization: Tax incentives for research and development activities
- Location: UK operations with London coverage
Contact Information
- Website: myriadassociates.com
- Phone: 0207 118 6045
- Email: [email protected]
- Address: 3rd Floor, 207 Regent Street, London, W1B 3HH
- LinkedIn: www.linkedin.com/company/myriad-associates
- Facebook: www.facebook.com/MyriadAssociates
- Twitter: x.com/MyriadRandDtax
BDO
BDO provides R&D tax relief advisory services as part of its wider tax practice. The company supports businesses with assessing qualifying activities, reviewing expenditure, and preparing claims that align with HMRC requirements.
Its R&D tax team works with organisations across different industries, combining tax advisory experience with support for businesses involved in technology development, engineering, manufacturing, and other innovation-focused activities.
Key Facts
- Ideal for: Medium-sized and larger businesses needing tax advisory support
- Core services: R&D tax relief, tax compliance, advisory services
- Specialization: Corporate tax and innovation incentives
- Location: London and UK offices
Contact Information
- Website: www.bdo.co.uk
- Phone: 020 7486 5888
- Address: 55 Baker Street London, W1U 7EU, United Kingdom
- LinkedIn: www.linkedin.com/company/bdo-llp
- Instagram: www.instagram.com/bdo_uk
PwC
PwC provides R&D tax relief advisory services through its tax practice, supporting businesses with claim preparation, eligibility reviews, and compliance considerations. The company works with organisations that need assistance managing innovation-related tax incentives within wider corporate tax structures.
Its R&D specialists support companies across sectors, including technology, engineering, manufacturing, and life sciences, where development activities may qualify for UK tax relief schemes.
Key Facts
- Ideal for: Larger organisations with complex tax requirements
- Core services: R&D tax incentives, tax advisory, compliance support
- Specialization: Corporate tax and innovation incentives
- Location: London and UK offices
Contact Information
- Website: www.pwc.co.uk
- Phone: +44 (0)20 7583 5000
- Email: [email protected]
- Address: 1 Embankment Place London WC2N 6RH United Kingdom
- LinkedIn: www.linkedin.com/company/pwc-uk
- Facebook: www.facebook.com/PwCUK
- Instagram: www.instagram.com/pwc_uk
KPMG
KPMG provides R&D tax incentive advisory services for businesses undertaking research and development activities. The company helps organisations assess eligible projects, review costs, and manage documentation requirements connected with R&D claims.
The service forms part of KPMG’s wider tax advisory offering, supporting companies that need R&D expertise alongside broader financial, compliance, and strategic tax support.
Key Facts
- Ideal for: Organisations with complex R&D and tax structures
- Core services: R&D tax relief, tax advisory, compliance support
- Specialization: Business tax incentives
- Location: London and UK offices
Contact Information
- Website: kpmg.com
- Phone: +44 (0)20 7311 1000
- Address: 15 Canada Square, Canary Wharf, London, E14 5GL
- LinkedIn: www.linkedin.com/company/kpmg-uk
- Twitter: x.com/kpmguk
- Facebook: www.facebook.com/KPMG
Conclusion
R&D tax relief providers in London differ in their focus, from accounting firms offering broader tax support to specialist advisors concentrating on technical claims and innovation incentives. Businesses can compare providers based on their experience with specific industries, documentation requirements, and the level of support needed throughout the claim process.
This guide provides an overview of companies operating in the R&D tax relief space rather than ranking them. The most suitable option depends on the complexity of the R&D activities, internal expertise, and the level of assistance required.