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About Us

We are a professional, friendly and reliable bookkeeping service for self-employed, sole traders and small to medium-sized businesses in London and surrounding areas.

We can deliver our services either remotely or on-site, whatever suits the requirements of our clients. We provide a wide range of services from general bookkeeping to cashflow management, payroll, VAT returns, budgeting and forecasting, helping you improve control over your business. 

Simplex Accounting Services ensures that accurate reports and management accounts are produced weekly or monthly to enhance profitability and provide a sound foundation for all your business plans and decisions. In addition, we are equipped to handle all of your bookkeeping needs, no matter how complex.

Our mission

At Simplex Accounting Services, our mission is to empower businesses and individuals by providing exceptional accounting services with a personal touch. We believe in turning numbers into narratives, helping our clients understand their financial story and shape their future.


We strive to be more than just accountants; we aim to be your trusted financial advisors who play a key role in our clients' growth and success. Our commitment is not just to compliance and accuracy, but also to being a guiding light in your financial journey, illuminating paths to growth and stability.

Our mission
Our Core Values

Our Core Values

Our core values are the backbone of our business and guide every service we provide.

Building long-term relationships based on mutual respect and understanding.

Tailoring solutions to meet each client's unique business needs.

Continuously evolving with technology and industry changes to offer the best solutions.

Providing top-notch accounting services with a focus on precision and quality.

Helping our clients and our team grow and succeed together.

Accounting Systems We Work With


What People Say About Us

Ryan G


I've been with Simplex Accounting Services for two years now, and they've consistently exceeded my expectations. The team is knowledgeable, efficient, and always there to answer any questions I have. What sets them apart is their commitment to understanding the unique financial needs of my business. It's not just about numbers for them; it's about the success of my business. I couldn't be happier with their services."

Emma R


Simplex Accounting Services is a lifesaver! As a startup owner, juggling multiple responsibilities is a given, and managing finances used to be a headache. Since I brought Simplex on board, that headache is gone. Their attention to detail and proactive approach have made a significant impact on the financial health of my business. I highly recommend them to any business owner looking for top-notch bookkeeping services

Alex H


I've been working with this bookkeeping business for several months, and I am extremely satisfied with their services. The staff is not only proficient in their work but also approachable and friendly. They make complicated financial matters easy to understand and always take the time to answer my questions. Their commitment to accuracy and timeliness is impressive, and I feel confident knowing that my business's financial records are in capable hands.

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