SIA Services
Explore our accountancy, tax, and advisory services designed to grow your business.
Services Overview
We offer a full suite of professional services designed to support businesses at every stage – from bookkeeping and payroll to strategic tax planning and reporting. Whether you’re just starting out or scaling up, our team provides reliable, tailored support to help you stay compliant and in control.
All services are backed by experienced advisors and cloud-based systems, ensuring seamless delivery and up-to-date compliance.
Accounting Services
Professional, reliable accounting services tailored to UK businesses, landlords, and contractors.
Bookkeeping & Management Accounts
Stay in control of your finances with accurate, real-time bookkeeping and insightful monthly reporting.
Business Growth & Planning
Strategic support to help your business scale with structure and confidence.
Business Plan Development
Clear, investor-ready business plans tailored for funding, growth, or launch.
Business Start-up & Company Formation
Start your business the right way — with expert guidance, HMRC registration, and strategic planning from day one.
Business Tax & Compliance
Ensure your business meets its tax obligations with confidence — while keeping liabilities as low as legally possible.
Cloud Accounting & Support
Access your accounts anytime, anywhere — with real-time reporting, automated bookkeeping, and expert support at your fingertips.
Company Secretarial Services
Stay legally compliant and up to date with professional company secretarial support tailored to UK businesses.
International / UK Property Purchase Advisory
Expert guidance for individuals and companies purchasing UK property.
IR35 Contract Review Service
Ensure compliance with HMRC’s IR35 regulations. Our specialist team will review contracts and working practices to determine status and minimise risk for both contractors and businesses.
Non-Residential Landlord Services
Specialist support for overseas landlords with UK property income.
Partnerships & LLP Compliance
Support for forming, registering and managing partnerships and LLPs.
Payroll & Auto Enrolment
Streamlined, fully managed payroll and pension compliance — giving you peace of mind, every pay run.
Personal Client Services
Tailored financial advice and business support for individuals and founders.
R&D Tax Credits
Unlock valuable tax relief by claiming back on innovation — whether you’re developing new products, processes, or software.
Tax Efficient Investment Advice
Guidance on maximising returns through HMRC-approved tax-efficient schemes.
Tax Inquiry & Investigation Support
Specialist support when you’re facing an HMRC enquiry or investigation.
Tax Planning & Compliance
Reduce your tax burden and stay fully compliant — with smart, strategic planning tailored to your business and personal finances.
Training Services
Professional training in accounting, payroll and bookkeeping for individuals and teams.
VAT & Indirect Taxes
Stay compliant and avoid costly mistakes with expert VAT registration, planning, and Making Tax Digital support.
Virtual Finance Officer
Access strategic financial guidance without the cost of a full-time hire — ideal for growing businesses that need clarity, control, and confidence.
