Strategic Tax Advisory for growing UK businesses

We support ambitious business owners, finance directors, and investors with strategic tax planning and one-off advisory services. Our in-house tax specialists deliver practical, high-value advice - whatever your stage of growth.

Optimised tax

Efficient structures

Better cash flow

No more nasty surprises

Service lead

Mark Martin

Partner and Director of Tax

From missed reliefs to smart returns

Let’s talk about your next move.

Not sure if you’re paying too much tax? You’re not alone.

Many business owners and investors are left reacting to tax problems instead of planning ahead. Whether you’re raising funds, selling up, or investing in growth, you need clarity, not confusion. That’s where we come in.

At Caldwell Penn, we pair technical expertise with commercial insight. Our in-house specialists support you with one-off tax advice or long-term planning—always aligned with your business goals.

“Tax shouldn’t be reactive. The right planning puts you in control, not HMRC.”
Mark Martin
Partner and Director of Tax

Tailored advice, not a templated service

We make tax decisions easier, not more bureaucratic.

We guide. You decide.

We give you clarity and strategy - not just compliance.

What we do:

  • Define the scope and timeline up front
  • Assign you a single, responsive point of contact
  • Bring in the right specialists when needed
  • Keep you in the loop throughout


What we need from you:

A clear sense of your goals – whether it’s reducing tax, unlocking value, or tackling something urgent.

“The right structure can save thousands - and it starts with understanding your goals.”
Bradley Goddard
Corporate Tax Specialist
“We make complex tax rules practical, so you can focus on running your business.”
Claire James
Personal Tax Specialist

Our promise

We promise to respond to every enquiry within one business day, providing a clear timeframe for the anticipated resolution.
  • Strategic, specialist advice – delivered in plain English

  • Joined-up thinking with your wider advisory team

  • Fast, flexible support tailored to your goals

Ready to feel more in control of tax?

Let’s cut through the noise and find the right answer.

Your key tax team

Mark Martin

Partner and Director of Tax

Claire James

Personal Tax Specialist

Bradley Goddard

Corporate Tax Specialist

Frequently asked questions

Most of our tax advisory work is one-off or project-based—though many clients come back for more. We're happy to work with you in a way that suits your needs.

Absolutely. We regularly collaborate with legal, financial, and investment advisers to ensure a joined-up, efficient result.

Yes. From EMI and EIS/SEIS to family shareholdings and CPOS, we’ve helped businesses across industries plan and implement complex structures.

No. We often work with non-clients on a project basis. If you like working with us, we can talk about more ongoing support afterwards.

Book a free Discovery Session. We’ll listen to what’s going on and confirm the best next step—whether that’s a fixed-scope proposal or a quick answer.

Our core sectors

Our expertise spans a wide range of industries, with 60% of our client base concentrated in the following core sectors:

Professional Services

Consultants, agencies, engineers, and other specialised firms providing expert professional services.

Technology & Innovation

SaaS companies, crypto businesses, software development firms, and tech start-ups.

Manufacturing & Logistics

Manufacturers, supply chain operators, warehousing businesses, and logistics providers.

While we specialise in these areas, our diverse client portfolio includes businesses across various industries, from retail to construction and manufacturing to hospitality.

No matter your sector, we’re equipped to support your growth and success.

Trusted by businesses like yours

"Caldwell Penn's transparency, professionalism, attention to detail, and friendliness distinguish them from all other firms we have previously engaged. They have exceeded our expectations by additionally offering R&D advice, which has significantly benefited our operations."
Allaero Limited
"While it’s hard to get excited about an audit, Caldwell Penn made the experience as seamless as possible. Communication was clear and effective, and the management letter provided valuable insights for our business. We highly recommend their services to any business in need of a thorough and efficient audit."
UK Lanyard Makers Ltd
"Caldwell Penn handle everything for us with a proactive, tailored approach. Their dedicated team understands our goals, ensuring we never miss tax-saving opportunities. They’re more than accountants, they’re partners in our growth."
Syon Creative Ltd
Privacy Overview

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.