Banking & Enterprise Systems

Outsourced Accounting Services and Enterprise Systems for UK andInternational Financial Clients

‍

‍

AOS delivers outsourced accounting services and enterprisedata systems for banking and financial services organisations in the UK and internationally. With financial data processed for over 1,500 accountancy clients, ISO 9001 and ISO 27001 certification, and a UK-registered subsidiary fully compliant with British regulatory requirements, AOS brings the scale,accuracy, and security that the financial services sector demands.

‍

‍

Enterprise-Grade Financial Services Outsourcing

‍

‍

Financial institutions and accountancy practices operate inregulated environments where data accuracy, security, and compliance arenon-negotiable. The cost of error is high, and the standards expected ofoutsourcing partners are correspondingly demanding.

AOS has built its financial services practice to meet thesestandards, combining rigorous quality management, certified information security, and deep UK accountancy expertise to provide outsourced accounting services and enterprise data solutions that regulated clients can rely on.

‍

‍

Our Banking & Enterprise System Services

‍

‍

Outsourced Accounting Services

‍

AOS provides outsourced accounting services to UK accountancyfirms, SMEs, and mid-market businesses, including bookkeeping, accounts preparation, management accounts, payroll processing, VAT returns, and tax compliance support.

‍

Accountancy Data Processing

‍

Our specialist accountancy data teams process financial records for large client portfolios with the accuracy and consistency requiredfor UK regulatory submissions, as demonstrated through our work with GiantGroup plc and Ascot Drummond.

‍

Enterprise Financial Systems

‍

AOS develops and supports enterprise financial platforms forbanking and financial services organisations, including core system integration, workflow automation, and data management solutions designed for high-volume regulated environments.

‍

Financial Services Document Management

‍

Our financial services document management capability coversthe digitisation, indexing, and management of financial records, compliance documentation, and client files, with data security and access controls appropriate for regulated financial data.

‍

Business Process Outsourcing for Finance

‍

Beyond accounting, AOS provides broader BPO services forfinancial institutions, including data entry, reconciliation, quality assurance, and operational support services delivered through structured, scalable workflows.

‍

‍

Proven in UK Financial Services

‍

‍

•       Financial data processed for 1,500+ accountancy clientsthrough Giant Group plc partnership

•       Accounting data for 800+ UK limited companies processed for Ascot Drummond

•       Year-end accounts and VAT returns submitted electronically to HMRC and HMCE

•       Contributed to one of the UK's first web-based accountancy platforms

•       Data reconciliation services delivered to CVRetail, oneof Europe's largest oil companies

‍

‍

Why Choose AOS for Financial Services & Enterprise Systems

‍

‍

•       UK-registered subsidiary (Accountancy OutsourcingServices Limited) for full regulatory compliance

•       ISO 9001 and ISO 27001 certified — quality and datasecurity at the standard financial services demands

•       1,500+ UK accountancy clients served, a proven trackrecord at scale

•       Scalable delivery model supporting growth withoutproportional cost increases

•       Deep knowledge of UK accounting standards, HMRC requirements, and financial services regulation

‍