Britannia Accountants – reliable accountancy practice in Sidcup

Crafting your own business from the ground up is no small feat. Whatever you may be focusing on, there is no doubt that there are areas such as tax returns, annual accounts, payroll, bookkeeping, etc., that are quite hard to handle on your own.  If you’re just starting out as a limited company, sole trader, or any other type of business, if you’re located in Sidcup and want to make your business grow, you need a reliable helper at your side.


Who we are

Britannia Accountancy Services Ltd. is a long-standing, London-based accountancy practice that is the perfect choice for all aspiring Sidcup-based business owners. We can help out with all the aspects of running a company, from annual accounts, payroll, bookkeeping, to dealing with HM Revenue and Customs, and so on.

You can trust us to always prioritise the well-being of your company. We have the experience and qualifications to ensure that your business will only profit from our activity. With our helping hand, you’ll never get lost in the numbers that come attached to the practice of running and establishing a business.

If you’re worried about money, you can rest easy. Our accountancy service, dedicated to Sidcup clients, operates on fees that are affordable and 100% transparent. Don’t be shy about contacting us and asking about any aspect of our work – after all, we are business owners ourselves and we can understand all the worries you may have connected to your company. Our staff are all approachable and understanding, giving you the best quality customer service to go along with our impeccable accountancy service.


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Our services

Britannia Accountancy Ltd can help out your Sidcup company in all aspects with our excellent range of high-quality services, including:

Account preparation
Accounts Preparations

BAS can help you manage all accounts of your company, at every step of the accounting process.


Make sure your company runs like a well-oiled machine with our bookkeeping services.

Taxation Services

Every business needs to comply with tax regulations - let us help you out!

Payroll Services

Always be on top of all the payroll at your company.

Vat service
VAT Services

As VAT regulates how most companies function, it's important to make sure that you're following the regulations.

non-domiciled individual
Non-Domiciled Individuals

If you're a non-domiciled individual, we can help you to prepare and to file your personal tax returns!

The Construction Industry Scheme (CIS)

The CIS regulates how subcontractors are paid for construction work - with our help, you'll always be on top of things!

Company formation
Limited Company Formations

If you're just starting out, we'll help you establish a limited company!

Tax Planning

Always keep track of the taxes you must pay with our tax planning services.

Looking for reliable and professional Accountants in Sidcup?

No matter what questions you may have, we'll always do our best to answer. Call us today or email us to book an appointment or just let us clear any doubts you may have about our services!

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Britannia Accountancy is a professional and proactive firm that have served all my financial requirements for the past 5 years. It is highly tailored to my needs and there is always someone available if any queries or questions need answering. A professional, friendly and supportive service that I can highly recommend.


I’ve been using Britannia Accountancy Service for well over 10 years for all my businesses. We’ve been extremely happy with their personal service. You know who you’re speaking to and you get replies and work done quickly. I would be very happy to recommend BAS to any small or medium business like ours.


I have referred quite a few people to BAS and in difficult situations, we got used to “Well, call them; they will know how to deal with this”. This is, in my understanding, a very good indication of the level of service


As a new company formed just six months ago we have been very lucky to have had Britannia Accountancy Services recommended to us. BAS have been a great help to us in these early stages of our business. They are helpful, offering good advice and have always responded very quickly when we have asked for help. In addition, our payroll and VAT returns have been completed in good time and professionally presented. We would happily recommend them to anybody.


We have been a loyal customer of Britannia Accountancy for over 5 years. Service provided always to perfection, timely procedures, sound advice and support whenever needed. BAS have a very professional and knowledgeable team in many additional fields, including export, customs and global trading. They provide excellent support in Russian and English which is a real bonus. Very highly recommended.

If you have questions, please contact our professional team