Business Details
MSU Advisory Limited is an independent firm of Chartered Certified Accountants based in East Sussex. It provides business accounting and compliance, tax planning and strategic advice to clients across the UK. Its outsourced CFO and finance director services give growing businesses access to senior financial expertise for cash flow management, growth planning and strategic decisions.
Its Business Owner Advisory Programme includes quarterly strategy meetings, management accounts reviews, cash flow forecasting, remuneration reviews and an annual wealth planning review. The firm also helps clients improve their finance systems through cloud accounting, automated processes, reporting dashboards and AI-assisted workflows.
MSU Advisory works with owner-managed businesses, entrepreneurs, private clients and family and personal investment companies. Founded by Mark Underdown FCCA, it is registered with and regulated by the Association of Chartered Certified Accountants (ACCA).
Its Business Owner Advisory Programme includes quarterly strategy meetings, management accounts reviews, cash flow forecasting, remuneration reviews and an annual wealth planning review. The firm also helps clients improve their finance systems through cloud accounting, automated processes, reporting dashboards and AI-assisted workflows.
MSU Advisory works with owner-managed businesses, entrepreneurs, private clients and family and personal investment companies. Founded by Mark Underdown FCCA, it is registered with and regulated by the Association of Chartered Certified Accountants (ACCA).
Services
Business Accounting & Compliance
Tax Planning & Advisory
Business Advisory Services
CFO & Finance Director Services
Cloud Accounting, Automation & AI
Highlights and features
- Independent Chartered Certified Accountants serving clients throughout the UK
- Over 20 years of professional accountancy and advisory experience
- Tailored tax planning and strategic advice for business owners
- Flexible outsourced Finance Director and Chief Financial Officer services
- Modern cloud accounting, automation and AI-assisted financial reporting solutions
- Ongoing business advisory support with quarterly strategic planning meetings
Associations and certifications
- ACCA
Payment methods
- Debit cards
Services
Business Accounting & Compliance
We help businesses meet their statutory and tax obligations with confidence. Our compliance services are designed to be accurate, efficient and well organised, giving you peace of mind that deadlines are met and your financial information is presented clearly.
Tax Planning & Advisory
Effective tax planning starts with understanding your wider personal and commercial objectives. We provide proactive advice to help structure affairs efficiently, manage risk and support long-term wealth creation and preservation.
Business Advisory Services
We work with business owners to improve performance, strengthen cash flow and make better strategic decisions. Our advisory services are designed to turn financial information into practical actions that support profitability, productivity and growth.
CFO & Finance Director Services
Growing businesses often need senior financial expertise before they are ready to appoint a full-time Finance Director or Chief Financial Officer. Our outsourced support provides flexible, board-level guidance to help you understand performance, plan for growth, manage cash flow and make informed strategic decisions.
Cloud Accounting, Automation & AI
Technology should make finance functions more efficient, more accurate and more useful to the business. We help clients implement and improve cloud accounting systems, automate routine processes and make better use of financial data through dashboards, reporting tools and AI-assisted workflows.
People
Mark Underdown
We believe that effective accountancy involves much more than preparing financial statements and submitting tax returns. We help our clients gain a clearer understanding of their finances, anticipate future challenges, minimise risks and make confident business decisions. From dependable accounting and compliance services to strategic tax planning, outsourced finance director support and practical business consultancy, we deliver straightforward, commercially focused advice tailored to our clients' needs.