Bookkeeping and accountancy services 

If you are thinking of starting your own business or need help getting your accounts in order, a good recommendation from other local mums in business is essential.


“I highly recommend Sarah Francis from Prime Numbers to all Local Mums. Sarah has helped me with my bookkeeping and accounts over the last seven years and has always given me excellent advice and made the whole process of working for myself simpler and easy to understand financially. With a background at PWC and lots of practical experience helping small businesses and sole traders, Sarah has excellent knowledge of accounting and bookkeeping. As a Mum of young boys Sarah also knows how hard it is to keep on top of paperwork and deadlines when you have a family to look after. Sarah is friendly, flexible, patient and understanding (especially for those less knowledeable about accounts, like me!) which is exactly what any mum starting out in business needs to get on track with bookkeeping and feel confident that their accounts will be in order.”
Kathy McGuinness, Local Mum

“I wouldn't hesitate to recommend Sarah Francis from Prime Numbers. Sarah has worked really hard for me over the last three years; my accounts are always in order and ready for the end of year work to begin with the accountant.  I am able to find information quickly and it is in an easy and readable format, especially good for a designer like me!”
Rosemary Ridgeway, Local Mum.


Prime Numbers
Prime Numbers is a family-run bookkeeping and accountancy company based in Carshalton. We specialize in helping start up companies and existing small to medium businesses. We also offer a competitively priced self-assessment service.Prime Numbers has been trading since 2008 but the owner has many years experience of bookkeeping. Previous roles in retail management and corporate administration have led to a well rounded view of business and allows us to see your business as you see it. 

Our services include self-assessments, sole trader and limited company accounts, company formations, VAT returns, CIS returns and payroll services. If you need some one-off help for a special project that’s fine too. We offer a free initial consultation where we can discuss how Prime Numbers can help your business.

As a business owner with a family including two young children, I understand how tough it can be to juggle all demands on your time. This is why we offer a friendly and flexible bookkeeping and accountancy service.

Sarah Francis
Tel: 0208 395 9516
Mob: 07961 455970

 About us        Advertise with us          Contact us         Site Map