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Starting a business

“Warrener Stewart has grown with us, helping us every step of the way in our development”
Richard Lewis

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Developing a business

“Warrener Stewart has consistently given good advice and have always been supportive of our business aims”
Theo Brehony

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Developing a business

“Warrener Stewart has an extremely broad spectrum of skills; their breadth of knowledge is outstanding”
Paul Allerton

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Starting a business

“Warrener Stewart has brought a depth of knowledge to my business allowing me to make informed judgments”
James Beagrie

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Starting a business

“My business benefitted enormously from Warrener Stewart’s advice they gave me sound and practical business advice”
Paul Mitchell

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Developing a business

“Meeting Warrener Stewart was a key turning point for us they encouraged us to drill down and really examine the business”
Iain Watson

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Exiting a business

“Every year Warrener Stewart makes us money with their dynamic approach to business advice.”
Jody Ashfield

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Chartered Accountants & Chartered Tax Advisors  Wandsworth

Warrener Stewart is an expert team of experienced chartered accountants, chartered tax advisors, registered auditors and highly responsive, proactive, intelligent business advisors. We work with entrepreneurs and owner managed businesses based in the thriving Wandsworth area. 

We can become your trusted advisor, especially where there is no financial director; our aim is to provide strategic business advice designed to help your business succeed and for you to reach your financial goals. Find out more about us.

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As chartered accountants, chartered tax advisors and registered auditors we provide a full range of accountancy services tailored to meet the needs of our private clients and their businesses.

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We audit many mid-tier firms across London and regional branches of large multi-site organizations.  We believe conducting an annual audit, even for those who are audit exempt, provides a detailed overview of a business’s performance.

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Business Planning

Warrener Stewart can become your trusted business advisor; developing a framework for your business to growth via actionable business plans and expert business advice, leaving you free to concentrate on running your business.

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Support Services

Our business support services allow you to outsource basic accounting functions including payroll or Company Secretarial advice, plus we can offer advice on registering and managing VAT.

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Tax Advice

Warrener Stewart is an expert in personal and corporate tax planning, ensuring compliance to annual tax requirements. Following a tax review of your business we can determine the most efficient tax structure for your company.

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US Tax Service

At Warrener Stewart we have two licensed IRS Enrolled Agents. Based in London, they can assist those who have an American income source with their US Federal tax and state tax filing requirements. 

Turning your numbers into
Actionable Business Intelligence

At Warrener Stewart, over the past 30 years, we have developed a tried, tested and proven process designed to help us understand your business and its aims. We will take time to understand your numbers and evaluate the business’s performance to develop a practical implementation plan.  

We offer a complete range of accountancy services intended to meet your growing business needs, wherever you are within the business lifecycle. Our experienced chartered accountants work in tandem with chartered tax advisors and registered auditors.  


Wandsworth and its surrounding borough is a diverse area with a higher than average concentration of small firms. At Warrener Stewart, we have established a reputation over the past 30 years, for providing intelligent business advice for many local owner managed business.

Accountancy support for a range of business sectors

We understand that each business faces unique challenges during their business lifecycle, which is why we will assign one of our experience Principals to be your main point of contact.  They will take time to get to know you and your business, building a picture of your business to be able to turn your numbers into actionable business advice.

At Warrener Stewart we have developed particular expertise within specific sectors including property, education and retail. There are tangible benefits using accountants who are experts within your given sector since we appreciate the challenges and even vagaries of the market that your business may encounter during its lifecycle. 

Proactive business advice for independent businesses

The entire team at Warrener Stewart can become your ‘outsourced finance director’, providing a sounding board for ideas, but most importantly freeing up your time to concentrate on developing your business. Many of our local clients, like Montessori Community Schools, have a tailored package of our services that fits their needs.

Essential support services

Alongside strategic business advice, we can also provide a range of outsourced key accountancy functions including payroll, advice on VAT returns and Company Secretarial duties.

Registered auditors in South West London

If your business in Wandsworth requires an annual audit, we are also registered auditors. Our audit team conducts an annual audit for many owner managed businesses throughout south west London since this can provide an accurate overview of a company's financial position. The annual audit helps ascertain their overall financial position which is an important prelude to expanding the business.  

Tax Advice for Private clients

Whether you own a business in Wandsworth or need personal tax advice, one of our chartered tax advisors can advise you on the most efficient way to manage you tax responsibilities. At our offices in Fulham our tax team is led by Damian Talbot; Damian and his team provide a full range of tax advice including personal advice on inheritance tax and capital gains tax.

International Tax Advice

Our tax team have extensive knowledge about international tax issues, including how UK tax can affect a British citizen leaving the UK. Similarly, they can help inbound individuals living and working in the UK with their tax affairs.

Assistance with American taxation

Warrener Stewart has two Enrolled Agents, Damian Talbot and Ashleigh Molton, who are both licensed by the US Federal Government permitting them to advise anyone with a US tax responsibility. Additionally, Damian is a Certified Acceptance Agent who can help with W-7 renewals. 

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If you have any questions about how your business could benefit contact us today:

020 7731 6163

Regular access to our experienced and knowledgeable principals

Meet our people

Our Process

We have a tried, tested and proven process that enables us to truly understand you and your business in order to give you the expert advice you need, when you need it.

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Latest News

Warrener Stewart grows Edinburgh office

Warrener Stewart is actively expanding its Edinburgh office to meet growing demand within the accountancy and tax market in Edinburgh and across the rest of the UK.As part of the expansion, Keith Campbell has joined the Edinburgh team as a Corporate Tax Assistant and is now taking his ATT exams. Prior to his career in tax, Keith worked in engineering and sustainable energy.Keith said: “I...

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Knowing the tax implications of cryptocurrencies

With cryptocurrencies becoming more prevalent over the last few years, Warrener Stewart is increasingly being asked to help clients who are unsure of the tax regulations associated with these investments.Huge volatility in the value of cryptocurrencies can result in large gains or losses for investors. Either situation can greatly affect an investor’s personal tax situation alongside...

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Warrener Stewart expands the audit team

Warrener Stewart has a highly regarded audit department and the team has expanded further to meet increasing demand within the audit market.Joining the audit team are Daniella Nagy (left) and Geena Hunt (right) both highly experienced and qualified, offering a great match with Warrener Stewart’s culture and a keenness to develop their careers.Supervisor Geena Hunt, brings five years...

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