Helping you and your business to save
time and money



We are not your typical firm of accountants!

We are dedicated to empowering businesses and individuals to achieve their financial aspirations in business. With a commitment to accuracy and innovation, our goal is to provide a top-tier accounting service that not only meets but exceeds your expectations. We aim to foster financial growth, security, and success for all our clients.

If you would like to speak to a member of the team about how we can help you and your business, we are ready!

Who we can help…

We're here to help a diverse range of clients. Whether you're a limited company seeking expert guidance, a business owner looking to optimise your finances, or self-employed and in need of comprehensive accounting solutions, we offer friendly and professional support tailored to your needs. We are here to be your trusted partner with your business accounting.

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Why Choose Us?

Choose us for reliable accounting services. Our experienced team provides tailored solutions, emphasising transparency and accuracy at all times. We focus on timely communication and proactive financial planning to help you achieve your goals and minimise taxes. Your peace of mind is our priority as we are trusted by many other businesses in Cambridgeshire and around the UK.

How we can help

Whether you are a sole trader business or a limited company, we can help with your accounting. Here is a breakdown of our services. If you would like to speak about any of our services in more detail, please do not hesitate to reach out to us.

Starting a business can be daunting, but our team provide comprehensive support and assistance to guide you through the process. From structuring your business to financial planning, we offer expert guidance to transform your entrepreneurial aspirations into reality.

Our meticulous approach guarantees the precise preparation of your statutory accounts in accordance with all regulations. We take pride in delivering transparent financial statements that accurately reflect your business's true financial position.

Helping our clients to stay well-informed and make prudent decisions with our timely and insightful management accounts. We furnish you with the financial data and analysis necessary to steer your business towards success.

Entrust us to efficiently manage your corporation tax returns, ensuring your business maintains tax compliance at all times. We aim to minimise your tax liability while adhering to all legal obligations for you and your business.

We help to streamline the process of self-assessment tax returns, ensuring you meet all deadlines and pay the correct amount each time. We are here to simplify the process for self-employed individuals.

We support our clients and provide accurate calculations and ensure you leverage available exemptions and reliefs where possible. Maximise your returns while remaining compliant.

Our team of tax experts offer proactive guidance to optimise your tax position. We craft tailored strategies to reduce your tax burden and help you attain your financial objectives.

Helping you to keep your financial records organised and up to date with our efficient bookkeeping services. We manage the numbers, allowing you to concentrate on expanding your business.

Simplify VAT compliance with ease. We manage your VAT returns, ensuring punctual submissions and precise calculations. Remain VAT-compliant without stress and penalties.


Innovative software for your accounts

We use the latest in accountancy software to help ensure you have accurate reporting and management of your accounts at all times. We are also proud to be a Xero Partner.

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Meet the Charles Trewin team

Here's a little bit about us.

Abbie Harrison

Abbie left school and began working in an accountancy practice, where she started studying towards the AAT qualification. After successfully completing the AAT, she moved onto the ICAEW qualification and became a Chartered Accountant in July 2022. Abbie has a decade of experience in accounts preparation, tax compliance and bookkeeping. She has a passion for software and loves helping clients transition onto new software as well as sharing tips and tricks to save time bookkeeping. Abbie has used most accountancy packages in her time, so if you could benefit from her support on Xero, Quickbooks, Sage, Farmplan or Landmark - do get in touch!  Abbie’s free time is usually spent with her two young children - but she also loves a holiday!

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Tom Moore

Tom is a Chartered Tax Adviser member of the Chartered Institute of Taxation, a Fellow of the Association of Taxation Technicians and an Associate Member of the Society of Trust and Estate Practitioners.  Tom has been advising a wide range of clients including owner managed businesses, sole traders, partners, landlords, high net worth individuals, non-UK resident and non-UK domiciled individuals, amongst others for over 17 years.  He has worked for a variety of firms from local practices to Top 5 and Top 20 firms. Tom's spare time is happily taken up by his family and two dogs.

What our clients have to say about us…

We love what we do but we love it even more when our clients tell us how much we have helped them with their business accounts. Here is just a sample of our most recent reviews.

Kara Boyd

Abbie is the best she always answers any questions and explains everything, especially to someone who is clueless and hates numbers! Cannot recommend her enough!

Reece, Beldom Plumbing & Heating

Abbie has been looking after my accounts for over a year now and is on it! Shes very efficient and goes above and beyond for me. She never makes me feel stupid no matter what question I ask.. couldn’t recommend her more.

Craig C

Since working with Charles Trewin they have been of immense help and support in my business accounting. Since acquiring their services they have provided ample support and advice, something I would be unable to have done myself and taken a huge weight off my mind allowing me more time to run my business as efficiently as possible. I highly recommend Charles Trewin for anyone with a business in need of accounting, tax and financial advice.

Frequently Asked Questions

How can I minimise my tax liability?

There are several ways to look to legitimately minimise your tax liability, however, everybody is different as are their circumstances so getting the right advice is key - it might be making pension contributions or giving to charity, operating through a limited company or gifting assets between your spouse or civil partner in order to utilise the best tax outcome

I have an established retail business, what experience do you have in this area?

With over 25 years combined experience in the accountancy and taxation profession having dealt with a wide range of clients, businesses and individuals we can work with you to provide the best advice and service.

Would you recommend setting up a limited company for my start-up business?

Typically, we would recommend starting as a sole trader, it is easier to set up and requires less legal administration.  However, a limited company may be more suitable for several reasons - to minimise risk, protect a name or for tax efficiency.  If you are looking to start up a business and unsure of the best route for you - please get in touch and we can advise based on your personal situation.

How do you charge for your services? Is there a monthly fee?

We typically charge a monthly fee which we agree up front with you, this avoids surprise bills, spreads the cost to provide a cashflow benefit and helps your management accounts to be more accurate. 

Get In Touch

Please use the contact details below to speak to our team or complete our short form. We’ll endeavour to get back to you ASAP.


Based in Cambridgeshire with UK coverage


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