This websites uses cookies, by continuing to browse the site you are agreeing to our use of cookies. View our privacy policy.

Starting a business

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

See the full case study

Developing a business

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

See the full case study

Developing a business

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

See the full case study

Starting a business

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

See the full case study

Starting a business

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

See the full case study

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

See the full case study

Exiting a business

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

See the full case study

Chartered Accountants & Chartered Tax Advisors

At Warrener Stewart our team of experienced principals; chartered accountants, chartered tax advisors and registered auditors, provide expert advice and support to private clients and their businesses helping them to achieve their financial goals.

To meet a business’s growing business needs we can tailor our services according to where your company is within the business lifecycle. Our aim is to support at every stage by following a tried and tested process designed to understand your business and it aims to help it succeed. Learn more about us.

Accountancy Logo

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

Audir Icon

Warrener Stewart specialises in meeting
the needs of small to medium sized
businesses. Wherever you are in your
business lifecycle our aim is to help you
make better informed business decisions
with greater confidence.

Business Planning Logo
Business Planning

Warrener Stewart can act as your trusted
advisor, especially where there is no
financial director – we ensure the
framework the client has in place is
appropriate and able to support the
businesses growth.

Support Services Icon
Support Services

There is great value to be gained from the
rigeur applied in the auditing process and
the outcome can be used to improve
business performance, guard against areas
of risk and to build confidence and

Tax Advice Icon
Tax Advice

Warrener Stewart has become an expert in
corporate tax planning and compliance
allowing you the freedom to run your
business. We will conduct a full tax review
of your business and determine the most
efficient tax structure for you.

US Tax Planning Icon
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

Our experienced principals at Warrener Stewart follow a tried, tested and proven process to truly understand your business and its aims. This allows them to provide strategic business advice designed to help you and your business succeed.

To meet your growing business needs we offer a complete range of accountancy services, experienced chartered accountants work alongside chartered tax advisors and registered auditors.  Our aim is to support your business growth by tailoring our services to suit your company’s needs depending on where you are within the business lifecycle.

Chartered Accountants in Knightsbridge

Set up in 1983 provides strategic, proactive business advise to owner managed business in the SW3 and  Knighsbridge area.  

Experienced business advisory services

Through our work with variety of businesses in south London, our experienced team at Warrener Stewart has gained a notable insight into specific business sectors.

Our accountancy advice has helped several independent schools set up in nearby Hammersmith and Kew.  We also have extensive knowledge of the property industry and all the legislation surrounding it. Whilst we work with London based estate agents; KFH and Aspire, we also work for independent property developers. 

Essential business advice for Start-ups

Statistically, many start-up businesses fail within their first three years; to give your new business the best chances of success Warrener Stewart's business adviors can offer invaluable support. Our expert team will work with you to help your business succeed.

Tax Advice for Private clients

Knightsbridge is a prestigious area, synonmous with luxury and home to many iconic brands such as Harrods. Warrener Stewart has a wealth of experience working with private clients and their families, providing specialist tax advice. 

US Tax Responsibilities

From our offices in Fulham we can also provide advice for anyone with an American tax responsibility. We have two Enrolled Agents licensed by the US Federal Government; Damian Talbot and colleague, Ashleigh Molton. They can assist with filing US tax returns as well as acting in a dual capacity for companies.

Registered auditors in South West London

At Warrener Stewart our registered auditors use the information gained conducting an annual audit to provide highly responsive, proactive business advice. An annual audit helps ascertain a company's financial position and highlight opportunities to develop or refine the business's plan.

Phone Icon

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.

Learn more


Case Study
Meon Valley Travel Ltd

Working in association with Warrener Stewart from the start of his company Meon Valley Travel, entrepreneur James Beagrie has developed a highly successful business. With their ongoing support and strategic business advice the agency has twice been awarded best travel agency.

Client's View

“As a business owner I encourage all my employees to be the best that they can be; I ask nothing less of my accountants. I run a successful business, safe in the knowledge that Warrener Stewart has got my back.”

Read the solution and result

Latest News

US tax filing requirements for Americans living abroad

Americans living and working in the UK, under the complex citizenship-based US tax system, must file income taxreturns as well as report their foreign bank accounts.  September is now upon us so the six-month extended filing deadline is fast approaching.  “Ideally anyone liable to pay tax in America should start the process early...

Read more >

Warrener Stewart client wins a prestigious Queens Award for Enterprise

Each year a select few British companies are awarded the Queen’s Awards for Enterprise for outstanding achievement by UK business. The scheme, established in 1966, has four distinct categories that companies compete for awards in; innovation, international trade, sustainable development and promoting opportunity through social mobility.The awards normally coincide with Her Majesty the...

Read more >

Three new recruits join Warrener Stewart

If there is one defining word for how the last fourteen months have gone then it’s resilience.  Faced with incredibly challenging circumstances our lives and working methods have adapted, whilst our economy has recently proved resilient too. The ONS reported only a 1.5% decrease in GDP for the most recent Quarter 1 (Jan to Mar 2021).Chartered accountants in Fulham, like Warrener...

Read more >