Accounting Services for 10X Growth

Focus on Your Present; Let Us Strengthen Your Future Work with a London-based accounting firm for tax, accounting, payroll, & EIS/ SEIS needs.



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Take Control of Your Financial Future Effortlessly


123Financials is a modern-day group of accountants in London and accounting service provider specialised in delivering tailored financial solutions for start-ups, individuals, and SMEs that get the most out of their business.

Our goal remains focusing on your present while securing your future with technology-driven, real-time financial information that makes accounting, tax affairs and bookkeeping as easy as possible.


Who We Serve?


We offer tax preparation and accounting services for individuals.


Our fail-safe fiscal strategies help new entrants uncover hidden growth potentials.

Established businesses

We are a full-finance stack with comprehensive solutions that go beyond accounting.

Our Services

Why 123Financials - Your Next Accounting Firm in London

Quick Turnaround

We are flexible with your requirements and assure to fulfil them before deadlines without any errors. Rest assured, we will submit your accounts in time, every time.

Round-the-Clock Availability

You will get access to time-tested solutions 365 days. No matter how urgent or complex the need is, our five decades of collective experience can solve any issue.

Fixed and Affordable Fee

You only pay for what you need and not a dime extra. Fixed fee, No surprises. We provide custom solutions or an all-in-one package that works best for your business in your budget.

Cream of Accounting Experts

We are a team of Tier 1 bankers, fund experts, CFOs, business finance specialists, and EX Big 4 Accountants that ensure result-oriented, regulatory compliant solutions.

Transparency Promise

We know how valuable your data are. Therefore, we promise to protect your assets as we would ours. That’s why we take all measures to secure them using the latest security solutions.

Technology Automation

We are associated with the world’s top accountancy automation partners, including Sage, QuickBooks, Asana, Zoho Projects, Jira, A2X, Hubdoc, FreeAgent, Dext, and many more.

Trusted All Over

The UK

Always there for guidance, support, on-time delivery of tax declaration and post-submission queries. An excellent accounting firm London.

Malcolm . - McInnes

Client Testimonials

Acknowledgement for 123Financials' general assistance and guidance during challenging circumstances, offering clear updates on COVID-19 and defining the Chancellor's rescue package quickly. The team's support is considered an asset in difficult circumstances.

Andrew Mcdonald
Andrew Mcdonald

As a newcomer to the world of self-employment, 123Financial proves indispensable in articulating claimable expenses and assisting in setting up a limited company. Their forward-thinking and proactive approach makes them highly recommended.

Fiona H
Fiona H

Hiring 123Financial as our outsourcing accounting team has proved to be outstanding in completing our tasks quickly. Their proactive initiatives ensure the job is done right the first time without lounging around on our watch!

Israel Fernandez
Israel Fernandez

Check our Trustpilot Reviews

Worried About Switching Accountants in London?

We manage all the nitty-gritties of onboarding and help you discover how dedicated cloud-driven accounting solutions can transform your financial management.

Our switching process is simple and cost-effective. We shall contact your current accountant to get your financial information and transfer it into 123Financials dynamic infrastructure in your budget.

Rest assured, our industry-specific experts and newer technology can seamlessly propel growth and bring new revenue avenues.


Download Accounting e-book for free

Our eBook contains the intricacies of business accounting, bookkeeping, financial management, taxes, and everything that will make you complacent, Learn how to build a dynamic financial system for your company.

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Accounting Firms In London One Place for Your Next

Are you looking for sustainable solutions to earn revenues from unprofitable clients? Want a clear and accurate blueprint of how to run your business on steady financial grounds? Worried about due diligence mergers and acquisitions? Unsure of tax filing and returns? You have come to the right place.

As a company ourselves, we understand the adrenaline rush of running a successful business. And we are here to ensure your finances are strong enough to keep up with it.

Based in London, 123Financials is one of the leading full-service accountancy firms in the UK that has helped hundreds of sole traders, contractors, e-commerce companies, SMEs, entrepreneurs, freelancers, and multinational corporates flourish on measurable results.

Our expert team can help you in all aspects of accountancy, including bookkeeping, tax planning and filing, capital gains, finance risk mitigation, CFO services, business growth strategies, and R&D credit maximisation specific to your industry.

We are accredited, So, rest assured, all your financial data and assets are regulated by the industry’s most competent accounting body.

Chartered Accountants In London - 123Financials

Our collective 50+ years of work experience have given us enough knowledge and exposure to deal with all shapes, sizes, and types of companies and their unique requirements. It has also enabled us to deliver unmatched work quality on an agile basis, every time. We have a fully-flourished accounting infrastructure powered by the cloud to accommodate umpteen data and tasks without slowing down.

We stand out among other tax accountants in london and accounting firms London by offering a friendly approach to individuals, contractors, startups, and established enterprises to assist them in growing their businesses at a low cost. We will work alongside you, get to know your business, and give the best solutions and creative ideas to help you achieve your goals, unlike other accounting businesses.

We will guide you at every level of your business, whether you wish to build your firm, reduce your tax burden, or increase your profit. So, let's work together and take your business to new heights like never before.

Accounting Partners