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Are you an existing R&D tax claimant?

Certainty in R&D tax
Relief Starts with Rigorous Compliance
Our team approaches every claim with robust governance, tireless preparation and a relentless pursuit of qualifying activity Book a Consultation
Trusted to Deliver by the World’s Leading Brands for 18 Years Invennt is one of the longest trading specialist R&D tax relief advisors. Trusted us to deliver with stability, rigor and care, without complexity. About Invennt Our Specialist Consultants Don’t Just Understand Your Industry. They’ve Lived It Invennt consultants bring hands-on experience and know how R&D works in practice, enabling them to relentlessly search for qualifying cost with precision and care. FIND OUT MORE Uniquely Qualified: The Only R&D Advisor with the BSI Innovation Kitemark Invennt is the first specialist R&D tax to acquire the ISO and BSI's Innovation Management Kitemark, reinforcing our leadership position in innovation and continuous improvement. Find Out More













A New Identity.
The Same Principles.
Discover the thinking behind Invennt's rebrand and how our new identity reflects a business that has grown in capability and ambition while remaining true to the values that define us. READ THE BLOG
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Compiled by Experts, Enabled by Technology

Our expert team and process deliver claims that are forensic, robust and clearly evidenced.

Are you an existing R&D tax claimant?

18

YEAR STABLE TRADING HISTORY

80%

OF CLIENTS WHO SWITCH ADVISOR RETURN WITHIN ONE YEAR

97%

CUSTOMER SATISFACTION RATING

125

REPORTS SUBMITTED ANNUALLY

1st

Specialist R&D Tax Advisor to acquire the BSI Innovation Management Kitemark

4

OFFICES IN THE UK & IRELAND

18

YEAR STABLE TRADING HISTORY

80%

OF CLIENTS WHO SWITCH ADVISOR RETURN WITHIN ONE YEAR

97%

CUSTOMER SATISFACTION RATING

125

REPORTS SUBMITTED ANNUALLY

1st

Specialist R&D Tax Advisor to acquire the BSI Innovation Management Kitemark

4

OFFICES IN THE UK & IRELAND

18

YEAR STABLE TRADING HISTORY

80%

OF CLIENTS WHO SWITCH ADVISOR RETURN WITHIN ONE YEAR

97%

CUSTOMER SATISFACTION RATING

About Invennt

Strong Compliance Requires Robust Preparation and Tireless Defence

Our team approaches every claim with tireless preparation and a relentless pursuit of qualifying expenditure.

Find Out More

We enjoy working with Invennt on our R&D tax credit claim. They are helpful, patient and clearly communicate the legal context. Their approach ensures that all qualifying expenditure is identified, and their architects and tax experts worked closely with our team to pull together the claim for us, demonstrating an impressive understanding of the architectural discipline and seamlessly translating our technical work into the necessary documentation.

Toby Johnson, Director, Haworth Tompkins
Two-time Winner of AJ 100 Architecture Practice of the Year

R&D tax relief was a new concept to our organisation so were sceptical at first. But Invennt were beyond fantastic in helping us avail of the relief. Invennt’s experience and knowledge made the process effortless and there isn’t a shadow of a doubt that we will be using their services again.

Joe Clinch, Finance Director, BAM Contractors
Multinational Construction & Civil Engineering Contractor

The on-site workshop Invennt facilitated was a highly efficient approach to gathering the necessary information and significantly reduced the time required by our team. The clearly defined timetable and deadlines ensured that every step, from drafting to submission was seamless and hassle-free.

Rachel Carter, Finance Manager, Al-Ko Kober
Industrial & Recreational Vehicle Chasis Manufacturer

Invennt has been instrumental in the preparation of our R&D claim. This is the first year, as a client that we have worked with Invennt, and the team have been proactive and methodical in their approach to achieve the maximum R&D relief for the business. They are a friendly and professional team and quick to respond.

Carlene Barry, Tax and Compliance Manager, McCormick Foods
The World's Largest Producer of Spices and Flavourings

We have worked with Invennt on our R&D claims for years. Throughout this time they have managed the entire process for us, bringing to bear their detailed sector knowledge. They are very adept at reducing the burden on our teams and ensuring all submissions to HMRC are of the highest quality. We are delighted with the outcome and I would wholeheartedly recommend them.

Steve Oldroyd, Finance & Commercial Director, TetraTech
Global Multidisciplinary Science and Engineering Consultancy

Invennt helped Southgate Global identify the eligible expenditure for our R&D tax relief claim efficiently and thoroughly. Their knowledgeable consultants understand our industry and communicate with our team effectively. We are very pleased with the result and would recommend their services.

Christian Holley, Financial Controller, Southgate Global
Global Industrial Equipment Manufacturer

We are very pleased to have been working with Invennt for a number of years now and every year we are delighted with the service and value they provide. Prior to using Invennt we had never captured our projects in such detail and with their support we have greatly increased the value of R&D tax credits. We have now established an effective process for our annual R&D tax claim and we look forward to continue improving this with their help.

Kyle Ingram, Head of Operating Excellence, Clancy Group
The UK's Largest Civil Engineering and Construction Contractor by Number Employees

We enjoy working with Invennt on our R&D tax credit claim. They are helpful, patient and clearly communicate the legal context. Their approach ensures that all qualifying expenditure is identified, and their architects and tax experts worked closely with our team to pull together the claim for us, demonstrating an impressive understanding of the architectural discipline and seamlessly translating our technical work into the necessary documentation.

Toby Johnson, Director, Haworth Tompkins
Two-time Winner of AJ 100 Architecture Practice of the Year

R&D tax relief was a new concept to our organisation so were sceptical at first. But Invennt were beyond fantastic in helping us avail of the relief. Invennt’s experience and knowledge made the process effortless and there isn’t a shadow of a doubt that we will be using their services again.

Joe Clinch, Finance Director, BAM Contractors
Multinational Construction & Civil Engineering Contractor

The on-site workshop Invennt facilitated was a highly efficient approach to gathering the necessary information and significantly reduced the time required by our team. The clearly defined timetable and deadlines ensured that every step, from drafting to submission was seamless and hassle-free.

Rachel Carter, Finance Manager, Al-Ko Kober
Industrial & Recreational Vehicle Chasis Manufacturer

Invennt has been instrumental in the preparation of our R&D claim. This is the first year, as a client that we have worked with Invennt, and the team have been proactive and methodical in their approach to achieve the maximum R&D relief for the business. They are a friendly and professional team and quick to respond.

Carlene Barry, Tax and Compliance Manager, McCormick Foods
The World's Largest Producer of Spices and Flavourings

We have worked with Invennt on our R&D claims for years. Throughout this time they have managed the entire process for us, bringing to bear their detailed sector knowledge. They are very adept at reducing the burden on our teams and ensuring all submissions to HMRC are of the highest quality. We are delighted with the outcome and I would wholeheartedly recommend them.

Steve Oldroyd, Finance & Commercial Director, TetraTech
Global Multidisciplinary Science and Engineering Consultancy

Invennt helped Southgate Global identify the eligible expenditure for our R&D tax relief claim efficiently and thoroughly. Their knowledgeable consultants understand our industry and communicate with our team effectively. We are very pleased with the result and would recommend their services.

Christian Holley, Financial Controller, Southgate Global
Global Industrial Equipment Manufacturer

We are very pleased to have been working with Invennt for a number of years now and every year we are delighted with the service and value they provide. Prior to using Invennt we had never captured our projects in such detail and with their support we have greatly increased the value of R&D tax credits. We have now established an effective process for our annual R&D tax claim and we look forward to continue improving this with their help.

Kyle Ingram, Head of Operating Excellence, Clancy Group
The UK's Largest Civil Engineering and Construction Contractor by Number Employees

We enjoy working with Invennt on our R&D tax credit claim. They are helpful, patient and clearly communicate the legal context. Their approach ensures that all qualifying expenditure is identified, and their architects and tax experts worked closely with our team to pull together the claim for us, demonstrating an impressive understanding of the architectural discipline and seamlessly translating our technical work into the necessary documentation.

Toby Johnson, Director, Haworth Tompkins
Two-time Winner of AJ 100 Architecture Practice of the Year

Invennt: You’re in Safe Hands

Expertly prepared and rigorously governed R&D tax relief claims, with the technical depth and personal service your hard work deserves.

About Invennt

Invennt brings rigorous governance and uncompromising attention to detail to every engagement, ensuring every claim is thoroughly evidenced, technically robust, and defensibly prepared from initial assessment through to submission. Our compliance-first approach prioritises accuracy and compliance over volume, giving clients complete confidence throughout the process.

Our industry expertise means we understand the technical and commercial nuances that less experienced advisers often overlook. By working closely with your team, we identify qualifying activities and accurately translate complex innovation into clear, compelling technical narratives that withstand scrutiny.

Unlike high-volume providers, every claim is managed by experienced specialists who take the time to understand your business, your projects, and your objectives, with technology used as an enabler rather than a replacement for expert input. This approach results in stronger claims, clearer communication, and an easier process that is tailored to your organisation rather than standardised forms and questionnaires.

Clients choose Invennt because they value genuine involvement and technical credibility. We are committed to delivering exceptional client service alongside robust, high-quality claims, providing the reassurance that your claim has been prepared with the care, expertise, and diligence it deserves.

From the Invennt Blog

Why We’ve Rebranded

Andrew Hastie explores the thinking behind Invennt's rebrand and how a simpler, more coherent identity reflects a business that has…

Enquiring Minds

Enquiring minds Maintaining R&D Tax Relief Compliance in an Environment of Closer Scrutiny. Originally Published in 2024 It’s no secret…

Press Release: Invennt becomes first UK organisation to achieve the BSI Kitemarkâ„¢ for Innovation Management aligned to BS EN 56001:2024

London, 2nd December 2026 —Specialist management and tax consultant Invennt has become the first organisation in the UK to achieve…

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