Chartered Accountants in London

Aureliant is a firm of chartered accountants in London providing high-quality accounting, tax, and advisory services to businesses, investors, and individuals. We combine Big Four technical expertise with a flexible, partner-led approach to deliver practical and commercially focused financial solutions.

Our London-based team supports clients across financial reporting, tax compliance, outsourced finance, and advisory services. Whether you are a startup, a growing SME, or an international group, we provide accounting solutions that are accurate, compliant, and aligned with your business strategy.

We work with clients across London and the UK, helping them meet HMRC requirements, improve financial processes, and maintain strong governance standards. From bookkeeping and payroll to complex financial reporting and cross-border advisory, Aureliant delivers end-to-end support with clarity and confidence.

As ICAEW Chartered Accountants, we maintain the highest standards of technical integrity and professional conduct. Our focus is on delivering reliable service, expert insight, and long-term value for every client relationship.

Internal Audit, SOX & Controls Advisory in London

In addition to accounting and tax services, Aureliant provides specialist internal audit, SOX, and internal controls advisory services in London. These services are designed to strengthen governance, enhance financial reporting integrity, and support regulatory compliance without performing statutory audit services.

Our Internal Audit Advisory services help organisations design, enhance, and operate risk-based internal audit functions. We support internal audit planning, methodology development, controls testing, and reporting to management and audit committees.

We provide SOX advisory services for UK-listed subsidiaries, US-listed entities, and multinational groups, covering UK SOX readiness, US SOX (Sarbanes-Oxley Act Section 404), Canadian SOX (NI 52-109), and Japanese J-SOX frameworks. We support documentation, design, and testing of internal controls over financial reporting (ICFR), aligned with regulatory and auditor expectations.

Our expertise includes business process controls across key cycles such as order-to-cash, procure-to-pay, record-to-report, and financial close processes. We also support IT general controls (ITGC), including user access management, system change control, and IT operations.

We provide statutory audit support services, working alongside management and external auditors to prepare audit-ready documentation, reconciliations, and technical accounting papers. Aureliant does not perform statutory audits, ensuring independence while strengthening audit readiness and compliance.

Finance Systems Implementation & Digital Transformation

Aureliant provides finance systems implementation and digital transformation advisory, supporting organisations in selecting, implementing, and optimising enterprise finance platforms.

We support system implementation and optimisation across leading platforms including SAP S/4HANA, Oracle Fusion Cloud ERP, Microsoft Dynamics 365, Workday Financial Management, and other cloud-based accounting systems. Our approach ensures that system implementations are aligned with financial reporting, internal controls, and regulatory compliance requirements.

Our services include system selection support, process design, ERP implementation advisory, chart of accounts design, data migration, and post-implementation optimisation. We ensure that systems are configured to support internal controls, including SOX compliance, ITGC requirements, and audit-ready financial reporting.

We support finance automation, including workflow automation, reporting dashboards, and integration with analytics tools. This enables organisations to improve efficiency, enhance data quality, and strengthen decision-making.