Business Details
33 Years
experience
Trusted Accountancy & Tax Advisory Services in London
Established in 1993, Caldwell Penn has built a reputation for delivering comprehensive accountancy and tax advisory services grounded in enduring client relationships. Our practice combines traditional expertise with modern technological solutions to provide tailored financial guidance across diverse sectors including professional services, technology, manufacturing, and hospitality. Led by a team of chartered accountants, registered auditors, and tax specialists, we prioritise proactive service delivery that extends beyond compliance to offer strategic insights for business growth. With offices in London, Guildford, and Farnham, we serve clients nationwide while maintaining a commitment to transparency, technical excellence, and practical advice.Our R&D tax relief expertise and flexible finance function solutions demonstrate our ability to address evolving business needs through innovative approaches. Through decades of experience, we have developed sector-specific knowledge that enables us to deliver actionable financial strategies aligned with individual client objectives. Our client-centric philosophy ensures that every engagement benefits from dedicated attention to detail and a focus on long-term value creation.
Services
Accountancy
Tax Advisory
Audit & Assurance
R&D Tax Relief
Finance Function
Details
- Year established: 1993
Highlights and features
- We offer proactive accountancy services led by chartered professionals with sector-specific expertise
- Our team delivers tailored tax advisory solutions for complex financial landscapes
- We provide R&D tax relief expertise to unlock innovation funding opportunities
- Our flexible finance function service reduces business overheads without compromising quality
- We maintain transparent communication and practical advice focused on client growth
Associations and certifications
- Chartered Accountants
- Registered Auditors
- Chartered Tax Advisers
What people say
Transparent and professional
Proactive tailored advice
Exceptional R&D expertise
Seamless audit process
Valuable business insights
Services
Accountancy
Our accountancy services ensure accurate financial records and compliance while supporting strategic decision-making. Led by Director of Client Finance Jamie Snell, we provide comprehensive bookkeeping, year-end accounts, and tax planning solutions tailored to business needs. Our approach combines technical excellence with proactive financial guidance to help clients maintain compliance and achieve long-term growth objectives.
Tax Advisory
Led by founder Mark Martin, our tax advisory service navigates complex tax landscapes to optimise client positions. We specialise in corporate tax planning, compliance strategies, and minimising liabilities through legitimate relief opportunities. Our team stays ahead of regulatory changes to provide forward-looking advice that aligns with business expansion goals and risk management requirements.
Audit & Assurance
Katie Halsall's audit team delivers clear, reliable audits that exceed compliance requirements. Our assurance services provide stakeholders with confidence in financial reporting while identifying operational improvements. We focus on delivering actionable insights through detailed analysis and comprehensive management letters that highlight growth opportunities and risk mitigation strategies.
R&D Tax Relief
Bradley Goddard's specialist team identifies qualifying R&D activities to maximise tax relief claims. We work with technology and manufacturing clients to document innovation processes and secure valuable financial benefits. Our expertise ensures businesses receive appropriate recognition for research and development investments while maintaining compliance with HMRC requirements.
Finance Function
This flexible service provides expert finance support without in-house recruitment challenges. We offer scalable solutions from day-to-day bookkeeping to strategic financial planning, adapting to client needs while maintaining consistent quality. Our professionals deliver reliable financial management tailored to business cycles and growth phases.
People
Jamie Snell
Director of Client Finance
Chartered accountant with extensive experience in client finance support, specialising in tax planning and compliance solutions for diverse business sectors.
Katie Halsall
Director of Audit
Registered auditor leading assurance services with a focus on delivering clear financial insights and compliance solutions for business growth.
Mark Martin
Founder & Head of Tax
Established Caldwell Penn in 1993, bringing decades of tax advisory expertise to help businesses navigate complex regulatory environments and optimise tax positions.
Bradley Goddard
Corporate Tax Specialist
R&D tax relief expert assisting technology and manufacturing clients to identify qualifying activities and maximise innovation funding opportunities.
Lawrence Evans
Managing Director
Strategic leader focused on building client relationships and delivering practical financial advice that supports business growth and operational efficiency.
Questions
What industries does Caldwell Penn specialise in?
We specialise in professional services, technology & innovation, and manufacturing & logistics sectors, while serving clients across retail, construction, and hospitality.
How does your finance function service work?
Our outsourced finance solution provides expert support without recruitment risks, offering scalable bookkeeping, financial reporting, and strategic planning tailored to business needs.
What R&D tax relief expertise do you offer?
We identify qualifying R&D activities and maximise claims through specialist knowledge of HMRC requirements, helping technology and manufacturing clients secure innovation funding.
How do you ensure audit compliance?
Our registered auditors deliver clear compliance solutions while providing actionable insights through detailed analysis and comprehensive management letters highlighting business improvements.
What tax advisory services do you provide?
We offer corporate tax planning, compliance strategies, and liability minimisation through legitimate relief opportunities, staying ahead of regulatory changes to support business growth.
