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TaxAssist Accountants Chiswick are an accountancy firm who can provide you with tax, accounting, bookkeeping and payroll services to suit your business needs. We are part of an award-winning national network of accountants who collectively service over 75,000 business clients across 375 offices. If you are looking for an accountant who can meet with you, understand your requirements, provide you with the right software and apps and help you and your business, then you are in the right place.

Our clients say we’re friendly, honest, helpful and deliver great service but don’t take our word for it, you can see why businesses score us 4.5 out of 5 on Trustpilot by following the link below.

Franck Sidon

Get Directions 563 Chiswick High Road, Chiswick, London, W4 3AY
Phone: 0800 0523 555

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About us

Franck Sidon is the principal at TaxAssist Accountants in Chiswick. Franck was born and educated in France and after many years spent working for banks in the major financial places, he now focuses with his team on helping private clients navigate the complexity of the tax system and SMEs grow their businesses in the most effecient way. Services provided include not only accounting and tax but also many other ancillary services from trusted partners working closely with us.

A free consultation can be arranged at our offices in order for us to understand your business, assess your requirements and agree a scope of appropriate accountancy and tax services. The firm provides a range of services including:

  • Limited company accounts;
  • Corporation tax returns;
  • Self assessment tax returns for individuals, sole traders and company directors;
  • VAT returns;
  • Payroll and pension processing;
  • Bookkeeping, including accounting software consultation.
  • Registered office services; and
  • Specialised tax advisory for individuals and companies

An upfront, fixed price fee is agreed prior to starting any work, with a detailed fee proposal outlining the scope and cost of our services prepared for your review and agreement.

So don't wait until the last minute, check Franck's blog for timely tax insights or call us for a free consultation.

TaxAssist Accountants Chiswick can be found towards the end of Chiswick High Road, right after the Chiswick Round About when going towards Kew Bridge. Our shop is right across the Brentford Foutain Leisure Centre.  Client parking is available in the Leisure Centre car park or on the side streets next to our shop. 

Get All Relaxed About Tax – As Seen On TV!

Opening hours
Monday 09:00 - 17:00
Tuesday 09:00 - 17:00
Wednesday 09:00 - 17:00
Thursday 09:00 - 17:00
Friday 09:00 - 17:00
Saturday Closed
Sunday Closed

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Our offices

Cabinet comptable efficace, à l'écoute et serviable. Je recommande. Un grand plus : ils sont francophones!


Carlos Da Silva

Found the Gunnersbury/Chiswick office to be helpful and professional. Were candid enough to indicate when I was capable of handling matters myself and thus not spending money with them unnecessarily.


JC on Trustpilot

Very helpful on my small business. Highly recommended.

X Yu

I went to their Chiswick branch and Franck helped me.He is very knowledgeable and helpful. So happy with their service.

Maryam Zr on Trustpilot

Merci pour votre soutien et conseils, je recommande a 100% !!


Stephanie Abisror

Franck and Alexis are very helpful and efficient. Really happy to work with them.

Fabrice Bernhard


Halil Akbina

I highly recommend Franck as an accountant and financial advisor. I recently launched my company Igniting Minds and Franck's advice has been invaluable to help me on the path of growth. Franck is always friendly and generous with his knowledge and expertise. Franck's advice saved me time and money by simplifying financial procedures and helped me develop an achievable strategy for growth.

Jacqueline Davis

I have a very good French Accountant in London to do UK company creation and accounting, le merveilleux Franck Sidon @taxtrends on Twitter.

Camblain Foodtech

I highly recommend TaxAssist Accountants. They have a very efficient team and always go straight to the point.

Marc Avedissian

One of Franck's pieces of advice to me was to use Kashflow - I thought it would be a waste of money. It has made me much more efficient. Franck is one of my regular speakers at my events.

Brendan Quinn

Very professional, quick and helpful. Thank you for the good job.

N Kole

Si vous êtes Français à Londres, il faut avoir une sacrée bonne raison pour ne pas prendre Franck comme comptable!

Jerome Camlain

Call us today to make an appointment at your local office

0800 0523 555

Or submit an enquiry