Specialist Tax Advisors

We help UK businesses unlock value, reduce risk and make confident decisions across energy, property, innovation and compliance. From identifying opportunities to navigating complex claims, reliefs and regulatory requirements, our specialists provide the expertise to move businesses forward with confidence.

Find the right service for your business

Select your industry to explore Bonham & Brook’s tax relief, funding, energy and compliance services relevant to businesses in your sector.

Who We Are

We are Bonham and Brook

Bonham & Brook is a specialist advisory firm working across Energy, Property, Innovation and Compliance. We bring together expertise across our service lines to see the full picture, solve complex challenges and shape stronger futures.

Combining deep technical expertise with a disciplined, compliance-led approach, our work is precise, defensible and built to stand up to scrutiny. Ex-HMRC led, we bring clarity where there is complexity and assurance where the stakes are high.

We build long-term partnerships grounded in transparency, empathy and accountability. We challenge thinking, simplify complexity and give decision-makers the confidence to act with conviction.

Compliance sits at the core of everything we do, protecting value today while powering sustainable progress tomorrow.

Find out more

1150+ Clients supported

£350m+ Relief secured for clients

1500+ Claims submitted

Our Services

How We Help Businesses Create Value

Energy

Review energy costs, contracts and usage to identify reliefs, procurement value and advisory support.

Energy Tax Relief

Property

Identify and document property-related tax reliefs across commercial property, Stamp Tax and land remediation.

Innovation

Identify, evidence and claim innovation-led incentives for qualifying technical activity and IP.

Compliance

Support HMRC-facing and AML compliance matters with specialist enquiry defence and advisory input.

Our Clients

Trusted by Businesses Across the UK

Our Expertise

R&D Tax Relief Specialists

R&D tax relief has been a core part of Bonham & Brook’s expertise from the outset, supported by a continually growing team of experienced technical specialists.

Our in house R&D tax relief specialists manage the entire claim process, giving businesses clarity and confidence from initial assessment through to submission and beyond.

We work closely with your technical teams and competent professionals to understand the R&D undertaken, identify qualifying expenditure and build the technical and financial evidence needed to support a robust, compliant claim.

With technical expertise and compliance at the core, every claim is carefully prepared to stand up to scrutiny, with continued support should HMRC have any questions after submission.

Explore R&D Tax Relief

Our Co-founders

Raed Hamandi & Haran Mahadevan

colleagues collaborating in the office-1

Our connected way of working

The E.P.I.C. Philosophy

Complex challenges rarely exist in isolation. By bringing together expertise across Energy, Property, Innovation and Compliance, Bonham & Brook sees the full picture; identifying opportunities and optimising processes that drive measurable progress.

Internally, E.P.I.C. shapes how we work together. We break down silos by design; teams collaborate, perspectives overlap, and expertise builds on expertise.

When someone brings a challenge to the table, they get thinking that's been pressure-tested across our service lines. We move at pace, but we move as one. That cross-functional collaboration isn't a process; it's our culture. It's how we've built a team of people that constantly challenge each other to be better.

E.P.I.C. is our daily reminder to trust each other's expertise and take genuine pride in what we deliver together.

Who we are

Case Studies

Examples of how we’ve helped businesses secure funding, manage risk, and unlock tax value.

How Weetabix turned Rising Costs into Sustainability Investment

Energy
Manufacturing

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Weetabix, a leading UK cereal manufacturer, partnered with Bonham & Brook to address rising energy costs and strengthen its sustainability strategy. Initially unaware of their eligibility for the scheme, the collaboration allowed them to reduce their energy costs allowing them to reinvest savings into greener technologies.

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The Challenge

For Weetabix, an energy‑intensive business, managing rising costs effectively is critical to maintaining competitiveness and funding sustainability initiatives. The company needed expert support to navigate complex government schemes, namely the EII Scheme, introduced to mitigate rising energy costs & encourage UK manufacturing.

The Solution

The Bonham & Brook energy experts:

Conducted a detailed review of energy consumption and operational practices.
Managed compliance processes, applications, & documentation with minimal burden on the Weetabix team.
Delivered advisory support to align energy strategy with sustainability and carbon reduction goals.

“I would absolutely recommend Bonham & Brook as a supplier inthis space.”

Impact & Results

Secured participation in the EII incentive, reducing exposure to rising energy costs.
Freed up funding to reinvest in sustainability initiatives and new technologies.
Supported Weetabix’s commitment to reduce Scope 1 emissions by 53% over the coming years.

“Bonham & Brook helped us to identify areas of improvement within our operational side of the strategy, working to understand where our consumption lies & how we can fit within energy‑intensive schemes from the government.”

Hugh Tollan, Strategic Sourcing Manager, Weetabix

Why Bonham & Brook?

By simplifying complex processes and ensuring full compliance while uncovering cost‑saving opportunities, Bonham & Brook gave Weetabix the confidence to pursue its wider sustainability goals with ease.

Working with Bonham & Brook

Deep expertise in legislative compliance and sustainability strategy.
Ability to combine compliant practices with value creation.
Transparent, responsive communication and tailoredadvisory support.

Looking Ahead

Weetabix continues to work with Bonham & Brook to embed sustainability across its operations, ensuring long‑term success while minimising environmental impact.The partnership supports Weetabix’s transition to green energy and reinforces its role as a responsible UK manufacturer.

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business.

Get in touch

Weetabix

How Weetabix turned Rising Costs into Sustainability Investment

Seven years on: Why this architecture firm keeps coming back to the same R&D partner

R&D
Architecture

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Vision Arch, a dynamic architectural practice led by Vivek, has been working with Bonham & Brook for over seven years. Having previously worked with a Top 20 accountancy firm, Vivek sought a more proactive and specialised partner to maximise their R&D tax relief opportunities.

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The Challenge

Having faced challenges with consistency and momentum in the past, Vivek sought a partner who could bring steady progress, proactive communication, and a deep understanding of R&D in the architecture industry – especially in the complex and innovative world of facade design and engineering.

The Solution

Bonham & Brook provided a well-managed, end-to-end service:

Clear explanation and guidance through the R&D claim process
Sector-specific expertise to identify qualifying activities
Project-managed submissions with defined stakeholder roles

The result? A seamless experience that didn’t just meet expectations, it surpassed them.

“What made the difference was B&B’s persistence. They chased and followed up until things got done. That’s exactly what we needed.

Impact & Results

The qualifying R&D expenditure B&B identified and the subsequent financial refund from the claim, directly supported Vision Arch’s growth, providing capital to reinvest into the business.

“The refund helped grow the business. Bonham & Brook got us far more than a Top 20 accountancy firm ever did.”

Vivek Thiyagarajah, Financial Director, Vision Arch

Why Bonham & Brook?

Bonham & Brook stood out for their deep industry knowledge, hands-on approach, and proven track record. The team’s persistence, attention to detail, and sector experience gave Vision Arch the confidence they were missing with other providers.

“If you’re on the fence, just do it. Their experience shows, and they make sure you get results.”

Working with Bonham & Brook

Ongoing Support: Regular touchpoints and early engagement on new projects
Clarity & Confidence: A clear process, minimal disruption, and expert hand- holding
Trusted Relationship: A long-standing partnership built on results and trust

“It’s not like I’d ever work with anyone else. The partnership with B&B just works.”

Looking Ahead

Vivek has worked with B&B for 7 years, and hasn’t looked back. He credits the team’s persistence as the backbone of the service

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

Vision Arch

Seven years on: Why this architecture firm keeps coming back to the same R&D partner

How Lanxess Chemicals Achieved A Seven-Figure Annual Saving With Bonham & Brook

Energy
Chemicals

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A Missed Opportunity Turned Game-Changer

When LXS Chemicals first engaged with Bonham & Brook, they had little awareness of how the EII Exemption could impact their bottom line. The potential savings were unknown, unquantifiable, and lacked tangible proof of success. Without clear evidence that the initiative would yield results, it was not an immediate priority.

However, taking the leap proved to be a game-changer.

Delivering Tangible Results

The results were undeniable. The implementation of the EII scheme delivered substantial savings, seven figures annually, not just within LXS Chemicals’ business unit but also across the broader KPI savings framework.

Initially, the company hesitated due to the untested nature of the service within their organisation. Could this initiative truly deliver? Would the effort lead to tangible results? These concerns were valid, yet they were quickly put to rest as the process unfolded.

What Made the Difference?

One of the standout aspects of working with Bonham & Brook was their professionalism and collaborative approach. From the outset, their expertise was evident, and their structured execution reassured the team at LXS Chemicals.

Unlike other consultancies that often promise much but deliver little, Bonham & Brook stood out by providing a seamless experience with clear, data-backed strategies.

Exceeding Expectations

Looking back, the decision to move forward with Bonham & Brook was driven by a mix of intuition and expertise. From the very first conversation, it was clear that their team had the knowledge and approach necessary to drive meaningful results.

The most pleasant surprise? The sheer scale of savings achieved. The initiative significantly impacted the company’s bottom line, and even more exciting, it allowed for a closer working relationship with Bonham & Brook, looking at other opportunities to further reduced costs through Bonham & Brook’s services.

Would LXS Chemicals Recommend Bonham & Brook?

Absolutely. The results speak for themselves.

For businesses that may be hesitant to take the first step, this case study serves as proof that the right expertise can unlock untapped savings and efficiencies. If you’re on the fence, let this be the reassurance you need—moving forward with confidence can lead to transformative results.

If your business operates in an energy-intensive industry and you’re unsure about the reliefs available, get in touch with Bonham & Brook today. The savings could be more significant than you realise.

Client: Paul Dunne, Lanxess Chemical, GPL Strategic Buyer Indirects

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

How Lanxess Chemicals Achieved A Seven-Figure Annual Saving With Bonham & Brook

How Eternis unlocked six-figures of unexpected relief through the EII scheme.

Energy
Chemicals

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Before partnering with Bonham & Brook, Eternis faced a significant challenge: determining their eligibility for the Energy Intensive Industries (EII) Exemption and Compensation Scheme. The application process seemed daunting, and with limited internal resources, they assumed they wouldn’t qualify for financial relief.

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Navigating the EII Scheme: A Challenge for Eternis

Before partnering with Bonham & Brook, Eternis faced a significant challenge: determining their eligibility for the Energy Intensive Industries (EII) Exemption and Compensation Scheme. The application process seemed daunting, and with limited internal resources, they assumed they wouldn’t qualify for financial relief.

“We initially assumed we wouldn’t qualify, but Bonham & Brook quickly proved otherwise.”

– Andrew Burke, Global Product Manager, Eternis

Despite their initial doubts, Eternis decided to engage Bonham & Brook to explore their options. What followed was a transformative experience that not only secured them funding but also reshaped their approach to energy tax opportunities.

Bonham & Brook’s Proactive Approach

From the outset, the Bonham & Brook team took full ownership of the process. Rather than relying on surface-level assessments, we conducted a deep dive into Eternis’ energy consumption, operational structure, and regulatory standing. Our expertise allowed us to pinpoint opportunities that had previously been overlooked.

“Their team took charge, identifying and securing opportunities beyond our expectations.”

Through meticulous research and strategic application management, we not only established Eternis’ eligibility but also ensured they received the maximum relief available under the EII scheme. The results far exceeded their expectations, unlocking financial benefits they hadn’t anticipated.

Persistence That Paid Off

One of the key differentiators for Eternis was Bonham & Brook’s unwavering persistence. We stayed ahead of government updates, continuously tracking new opportunities and regulatory changes that could impact their eligibility. The proactive approach of the Bonham & Brook team ensured that no stone was left unturned.

“What stood out most was their tenacity. They kept pushing, staying on top of new opportunities and government updates, ensuring we didn’t miss out on anything.” –

The Eternis team particularly valued our ability to handle the complexities of the claim with minimal time commitment on their part. This allowed them to focus on their core business operations while we worked tirelessly behind the scenes to maximise their claim.

Why Eternis Recommends Bonham & Brook

Reflecting on the experience, Eternis shared how Bonham & Brook’s expertise, tenacity, and strategic approach made all the difference. Initially sceptical about their eligibility, they now encourage other businesses to explore their options, emphasising that there is little to lose but so much to gain.

For businesses navigating the complexities of energy tax relief, Eternis’ experience serves as a testament to the value of having a dedicated partner like Bonham & Brook. Our ability to identify opportunities, manage the entire claims process, and secure unexpected funding has positioned us as a trusted advisor in this space.

“If you’re on the fence about working with Bonham & Brook, we can confidently say there’s little to lose and so much to gain. Their dedication and proactive approach made all the difference, and the final results far exceeded our expectations.”

Andrew Burke, Global Product Manager, Eternis

Is Your Business Missing Out on Energy Tax Relief?

If your company operates in an energy-intensive industry, you may be overlooking valuable financial incentives. At Bonham & Brook, we specialise in uncovering hidden tax opportunities and securing funding that businesses often assume they aren’t eligible for.

Contact us today to discover how we can help you navigate the EII Exemption and Compensation Scheme and maximise your energy tax benefits.

Get in touch

How Eternis unlocked six-figures of unexpected relief through the EII scheme.

When cutting-edge sensor development meets R&D tax relief

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Central Group (UK) is a family‑owned engineering specialist company currently focusing on AI and coding in engineering. While developing a new sensor through an Innovate UK grant, they faced the challenge of managing the intricacies of R&D tax relief, while trying to maintain momentum in their cutting-edge technological advancements.

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The Challenge

With their team deeply immersed in technical development, navigating the complexities of the R&D tax system became a time-consuming and risky distraction for the Central Group team. Their main concern was ensuring their pioneering work received proper recognition under HMRC guidelines – without derailing innovation efforts.

The Solution

Bonham & Brook’s technical team collaborated directly with Central Group to translate complex engineering projects into a compelling R&D tax claim. Bonham & Brook’s ability to frame innovation in terms that aligned with HMRC criteria ensured accuracy, compliance, and a smooth claims process.

Impact & Results

After an incredibly successful R&D tax relief claim, Central Group unlocked significant funds that they reinvested into accelerating their sensor development. With a simplified, efficient process, B&B saved the client countless hours to redirect focus bac

“If you’re on the fence, don’t hesitate. Bonham & Brook delivered beyond our expectations. Their unique blend of financial savvy and real technical understanding is incredibly rare. It’s an investment that pays off, saving you time, stress, and ultimately, securing crucial funding that directly fuels your growth.”

Shaun Sutton, Director & Co-Owner, Central Group UK

Why Bonham & Brook?

Unlike other providers who offered generic advice, Bonham & Brook took time to understand the depth of Central Group’s innovative AI and engineering work. B&Bs tailored approach and deep technical fluency made them stand out immediately.

“B&B understood & helped explain our innovation in a way that perfectly met HMRC’s criteria.”

Working with Bonham & Brook

The collaboration exceeded expectations. The client highlights:

The B&B specialists demonstrated genuine understanding of the underlying technology
B&B made the process seamless and insightful.
Our hands-on approach turned a potentially stressful process into a value-driven partnership.

Looking Ahead

Thanks to the funding and support unlocked with Bonham & Brook’s efforts, Central Group’s sensor technology is now rapidly approaching commercial readiness, opening new possibilities across multiple sectors; positioning them for sustained growth.

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

Central Group (UK)

When cutting-edge sensor development meets R&D tax relief

When an audit becomes your competitive advantage: An accounting firm’s story

AML
Accounting

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Pollock Taylor Ltd, a UK accounting firm, partnered with Bonham & Brook to strengthen its internal compliance procedures following an AML audit by ACCA.Working together brought peace of mind, renewed confidence, and carefully tailored documentation that made compliance feel less like a burden and more like a shared achievement.

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The Challenge

An AML audit from ACCA highlighted areas where Pollock Taylor Ltd needed to improve its procedures. Without expert guidance, the firm risked spending significant time and resources trying to meet complex compliance requirements.

The Solution

Bonham & Brook’s AML consultant, Jonathan, conducted a thorough independent audit of Pollock Taylor’s current position. He identified key areas for improvement and worked closely with the team to resolve issues. The support included:

A bespoke firm-wide risk assessment
A tailored policy and procedure manual
Hands-on guidance to ensure compliance with ACCA standards

“B&B are professional, efficient, and good value for money.”

Impact & Results

Clearer understanding of AML requirements
Processes established to maintain compliance
Confidence in meeting ACCA obligations
Significant time savings by leveraging expert knowledge instead of internal research

"What stood out most was the way Jonathan worked alongside us. It felt less like being audited and more like having a trusted partner guiding us through the process.”

Matthew Mead, Director, Pollock Taylor Ltd

Why Bonham & Brook?

Pollock Taylor Ltd had previously worked with Bonham & Brook and trusted their expertise. The professionalism, efficiency, and attention to detail stood out, making the service excellent value for money.

Working with Bonham & Brook

Transparent, responsive communication and tailored advisory support.
Deep expertise in legislative compliance and sustainability strategy.

Looking Ahead

Pollock Taylor Ltd continues to work with Bonham & Brook to strengthen their compliance position across operations, ensuring long‑term resilience & maintaining client trust. The partnership supports Pollock Taylor’s commitment to proactive AML practices and reinforces it’s role as a competitive UK accounting firm.

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

Pollock Taylor Ltd

When an audit becomes your competitive advantage: An accounting firm’s story

How a property investor secured SDLT relief without the compliance risk.

Stamp Taxes
Real Estate

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Our client, a dental surgeon & property investor, had recently purchased a residential property and was facing a significant Stamp Duty Land Tax (SDLT) bill. Having previously worked with Bonham & Brook, he returned for specialist support when the newly increased SDLT rates made it essential to explore every legitimate tax-saving opportunity.

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The Challenge

The client’s primary concern was the SDLT liability, which would have been calculated under the higher-rate residential SDLT rules (including the additional dwelling surcharge). Based on his assessment of the property, he believed that non-residential treatment might be applicable, but sought specialist support to ensure that any position taken would be robust & defensible in the event of HMRC scrutiny. The objective was clear: achieve the most efficient SDLT outcome without introducing compliance risk.

The Solution

Bonham & Brook provided a full, end-to-end service:

Conducted a detailed property analysis and eligibility review.
Compiled a comprehensive audit trail and produced a technical report.
Prepared all documentation in anticipation of any HMRC enquiry.

“B&B laid out everything from the start, they were transparent with what was needed, what to expect, and how strong the case was.”

Impact & Results

Reduced SDLT liability through successful non-residential classification.
Peace of mind via HMRC enquiry-ready documentation.
Expanded engagement into further tax planning & capital allowances opportunities.

“I felt confident Bonham & Brook had my best interests at heart throughout the entire process.”

Bilal Hayat, Property Investor & Dental Surgeon, Life Dental Services Limited

Why Bonham & Brook?

With proven expertise in SDLT reclassification and property tax strategy, Bonham & Brook combines technical precision with efficient processes & communication – offering clarity before commitment.

Working with Bonham & Brook

Transparent, upfront advice, even before engagement.
Responsive communication
Guidance through every step of the process.

Looking Ahead

Following the success of this claim, the client has engaged Bonham & Brook for further capital allowances reviews, deepening a trusted partnership built on results, reliability, and genuine care.

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

SDLT

How a property investor secured SDLT relief without the compliance risk.

How our sector experts optimised the R&D tax process for GP biotec

R&D
Manufacturing

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The Challenge

GP Biotec’s earlier R&D tax claims placed a heavy burden on internal teams. The process was complex, resource‑intensive, and detracted from core business operations. The company needed an advisor who could reduce this strain while maximising the benefit of government incentives.

The Solution

Bonham & Brook’s technical consultant, Eric, brought immediate confidence through his deep understanding of AD plants. The process was handled smoothly in the background, requiring minimal input from the client. Key elements included:

Unmatched sector expertise
Clear, tailored guidance
Streamlined process with minimal client burden

“Don’t hesitate. It’s well worth exploring, and you may be surprised by the level of benefit available.”

Impact & Results

Meaningful tax savings secured, offsetting significant site and equipment investments
Reduced internal workload, freeing the team to focus on operations
Confidence in meeting ACCA obligations
Complete confidence in the process

"The process was seamless. We secured meaningful tax savings, and what surprised us most was how well the team understood our industry.”

Lucy Owen, Regulatory Compliance Manager, Biotec Ltd

Why Bonham & Brook?

The standout factor was technical understanding. Eric’s grasp of AD operations reassured GP Biotec that their claim was in safe hands. The seamless process contrasted sharply with previous experiences, delivering both efficiency and value.

Working with Bonham & Brook

Transparent, responsive communication and tailored advisory support
Deep expertise in legislative compliance and sustainability strategy

Looking Ahead

GP Biotec continues to work with Bonham & Brook across multiple areas. With limited government support for the sector, incentives like R&D tax relief are vital for enabling investment and growth. Bonham & Brook’s expertise ensures GP Biotec can confidently leverage these opportunities.

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

GP Biotec

How our sector experts optimised the R&D tax process for GP biotec

Managing Complex R&D Claims Across Global Teams - Dotsquares

R&D
Software

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The Challenge

Building on prior R&D collaborations, DotSquares looked for a partner with the specialist knowledge and capacity to manage complex projects at scale. They required a firm capable of interpreting intricate software development within HMRC’s R&D framework while ensuring full compliance and efficiency across international teams and multiple concurrent innovation projects.

The Solution

From day 1, our team implemented a clear, structured, and transparent process that aligned perfectly with the client’s operations:

Clearly defined each stage – from kick-off to claim preparation.
Engaged directly with their technical teams to interpret complex software projects.
Ensured full compliance through review by former HMRC inspectors

“They are very organised, knowledgeable, and process-oriented, which makes working with them remarkably easy.”

Impact & Results

The collaboration significantly improved the speed, accuracy, and consistency of DotSquares’ R&D claims, allowing the client’s team to focus on their ongoing work. Our team also identified additional qualifying projects, maximising claim value and efficiency.

“They consistently deliver on what they promise. The peace of mind in knowing our claims are reviewed by experienced professionals, including ex-HMRC specialists, is invaluable.”

Bankim Chandra, Managing Director, DotSquares Ltd

Why Bonham & Brook?

DotSquares chose Bonham & Brook for our rare blend of technical insight & regulatory precision. With software engineers and ex-HMRC professionals on the case, the B&B team demonstrated unmatched understanding of both innovation and compliance from the outset.

Working with Bonham & Brook

The collaboration was described as seamless and built on mutual trust. Our team,

Coordinated effortlessly across global time zones
Brought structure & clarity to a complex process through a well-defined framework.
Maintained exceptional and proactive communication, documentation & responsiveness

Looking Ahead

The client plans to deepen its collaboration with us through ongoing reviews to uncover new qualifying projects – supporting future innovation and sustainable growth across its international operations.

Bonham & Brook has a score of 4.8/5 on Trustpilot.

To discuss how Bonham & Brook can help your business contact us today.

Get in touch

DotSquares

Managing Complex R&D Claims Across Global Teams - Dotsquares

Learn More

What our clients say about us

“I would absolutely recommend Bonham & Brook as a specialist in this space.”

Hugh Tollan

Strategic Sourcing Manager, Weetabix

"What stood out most was B&B’s tenacity. They kept pushing, staying on top of government updates, ensuring we didn’t miss out on anything. We highly recommend them to any business seeking to maximise their energy tax opportunities.”

Andrew Burke

Global Product Manager, Eternis

"The results were undeniable. The initiative significantly impacted our bottom line, and the scale of savings exceeded expectations."

Paul Dunne

GPL Strategic Buyer Indirects,

Lanxess Chemicals

"B&B took what could have been complicated and made it simple. They understand your business, your tech, and how to position it in a compliant way. There’s really no downside.”