CASS Assurance London

Millet Accountants are a leading accountancy firm, specialising in financial and statutory audits.

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Trusted Support For London Businesses

At Millet Accountants, we provide specialist CASS assurance services for FCA regulated firms across London and beyond who are regulated by the Financial Conduct Authority (FCA). The Client Assets Sourcebook, commonly known as CASS, sets out the rules that FCA Regulated firms must follow when holding or controlling client money and assets. These rules are designed to ensure that client assets are properly safeguarded and that firms operate with transparency and accountability. As an experienced firm of accountants and auditors based in London, we work closely with regulated firms to ensure they meet all necessary CASS requirements and avoid the risks of non-compliance.

We understand that CASS audits and assurance reports can seem complex and time-consuming, which is why we focus on making the process as smooth as possible for our clients. Our team takes the time to understand how your business operates, the type of client money you hold, and your current systems and controls. By doing so, we can efficiently “audit” your client money.  During the assignment we will also report to you any areas that could be improved, in line with FCA rules. With our support, you can efficiently and effectively meet your CASS FCA reporting requirements..

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Why CASS Assurance Matters for FCA Regulated Firms

CASS assurance is a vital part of compliance for any firm that holds or controls client money or assets. The FCA takes the safeguarding of client assets extremely seriously, and any failure to comply with CASS rules can lead to severe penalties, reputational damage, or even the loss of authorisation. As a firm working in London’s fast-paced financial sector, it is essential that your systems and controls are robust, well-documented, and regularly reviewed. CASS assurance is not just about meeting regulatory requirements but about demonstrating that your firm operates with integrity and professionalism.

At Millet Accountants, we have seen first-hand how a well-executed CASS framework can help firms build trust with clients and stakeholders. We work with businesses to identify potential weaknesses in their controls and put in place processes that ensure compliance is maintained throughout the year. Our team also stays up to date with the latest FCA guidance and regulatory changes so that our clients receive the most current advice possible. By working with us, you are not only meeting your CASS obligations but also strengthening your firm’s overall governance and reputation in the market.

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REVIEWS

Commendations from just some of our clients

CASS Assurance – Millet Accounting has helped with our client account audit recently and the service has been exceptional, good value for money and I have found them to be professional …

Charles Lyndon Solicitors

Grant Assurance – Andrew was very responsive, as the accountant report requested needed to be completed on a relatively tight timeline. He was quick to come back with any relevant queries and very pleasant to work with. I highly recommend working with Andrew for independent accountant reports!

Renuka Ramanujam

Charity Audit – I do recommend Millet Accountants, it was especially good experience working with Andrew, who was very professional and responsive. A trustworthy auditor to rely on.

C Yang

Independent Examination – Millet Accountant helped us enormously at short notice and we are extremally grateful to have been introduced to them. We are looking forward to continuing to build a long lasting professional relationship.

S Kalik

Compliance – I highly recommend the accounting services from Millet Accountants. The team was thorough, organised, and helped streamline my financial records. Their expertise ensured compliance and provided valuable insights for better financial management. A fantastic, reliable and efficient service.

J Stere

Recently moved to Millet Accountants and the service has been great. They made our recent accounts a very smooth and easy process. Would definitely recommend.

Dorothea A

Our Approach to CASS Assurance

At Millet Accountants, we pride ourselves on delivering a personal and proactive service to every client. We understand that every firm is different, and so our approach to CASS assurance is always tailored to your specific needs. As part of our work, we carry out a detailed review of your firm’s client asset procedures, internal controls, and reconciliation processes. Where required, we also perform CASS audits and prepare assurance reports that meet FCA requirements. Our expertise extends beyond CASS assurance, as we are also highly experienced in carrying out statutory audits for companies across London.

This means we can provide a joined-up approach for firms that require both statutory audits and CASS assurance, ensuring that both regulatory and financial reporting requirements are met in full. Our aim is to remove the stress and confusion that can often come with regulatory audits by providing clear guidance and practical solutions. With our team by your side, you will always know exactly where you stand in terms of compliance and what steps you need to take to stay ahead of any potential issues.

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Personal, Local Service

At Millet Accountants, we offer a genuinely personal audit service in Shoreditch, combining local knowledge with responsive support to ensure your business meets its obligations with confidence, clarity, and minimal disruption.

Expert Audit Insight

Our CASS assurance services do more than tick boxes. We provide clear, professional insight that highlights risks, identifies opportunities, and helps your business grow. Trust Millet Accountants to deliver audits that add real value to your company.

Tailored for Growth

Whether you’re a growing SME or a large private firm, we tailor our audit approach to suit your business. With us, you’ll receive practical guidance, detailed reporting, and consistent support every step of the way. Get in touch with our team today.

OUR SERVICES

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Audit

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Independent Examination

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Assurance

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REVIEWS

Commendations from just some of our clients

CASS Assurance – Millet Accounting has helped with our client account audit recently and the service has been exceptional, good value for money and I have found them to be professional …

Charles Lyndon Solicitors

Grant Assurance – Andrew was very responsive, as the accountant report requested needed to be completed on a relatively tight timeline. He was quick to come back with any relevant queries and very pleasant to work with. I highly recommend working with Andrew for independent accountant reports!

Renuka Ramanujam

Charity Audit – I do recommend Millet Accountants, it was especially good experience working with Andrew, who was very professional and responsive. A trustworthy auditor to rely on.

C Yang

Independent Examination – Millet Accountant helped us enormously at short notice and we are extremally grateful to have been introduced to them. We are looking forward to continuing to build a long lasting professional relationship.

S Kalik

Compliance – I highly recommend the accounting services from Millet Accountants. The team was thorough, organised, and helped streamline my financial records. Their expertise ensured compliance and provided valuable insights for better financial management. A fantastic, reliable and efficient service.

J Stere

PEOPLE

Our Team

Highly trained
and skilled UK based team

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REGISTER OF STATUTORY AUDITORS

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Our Commitments

Integrity

Everything we do we do with the upmost integrity

Understanding

We will ensure we understand your business

Commitment

We will work with you to deliver an efficient audit

Life

We organise ourselves so that we can best balance life and work

Training

We are committed to developing our team

Career

We want our team to progress and reach their maximum potential

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Why Choose Millet Accountants for CASS Assurance in London

Choosing the right firm to provide CASS assurance is an important decision. At Millet Accountants, we combine technical expertise with a friendly, approachable service. We believe in building long-term relationships with our clients and supporting them at every stage of their compliance journey. Our London-based team has an in-depth understanding of FCA regulations and works closely with firms to ensure that CASS rules are applied correctly and efficiently. We take the time to explain every stage of the process in plain English, making it easy for you to understand what is required and why it matters.

We also recognise that regulated firms often operate in fast-moving markets where systems and controls need to adapt quickly. That is why we provide ongoing support, not just a one-off review. Our goal is to give you complete peace of mind that your client assets are always being managed in line with FCA expectations. By choosing Millet Accountants, you can trust that your firm will receive expert advice and practical support, helping you stay compliant while focusing on growing your business.

Get in Touch with Millet Accountants Today

If your firm needs CASS assurance in London, we would be delighted to help. Our team is experienced, approachable, and always ready to provide guidance that is both practical and easy to understand. Whether you are looking for a one-off CASS audit or ongoing support to ensure your compliance framework remains strong, we have the expertise to assist. We also provide statutory audits and a full range of accountancy services, making us a one-stop solution for regulated firms that want reliable, professional support.

We know that compliance can feel overwhelming, but with our help, you can be confident that your systems and controls are meeting all FCA requirements. To find out more about our CASS assurance services or to arrange an initial discussion, please contact Millet Accountants today. We look forward to supporting your business and helping you stay fully compliant while delivering the highest standards of service to your clients.

Frequently Asked Questions

What is CASS assurance and why is it important for my firm?

CASS assurance refers to the process of reviewing and reporting on a firm’s compliance with the FCA’s Client Assets Sourcebook (CASS) rules. These rules govern how firms hold or control client money and assets, with the aim of protecting clients in the event of firm failure or operational issues. For FCA-regulated firms, CASS assurance is vital because it ensures that systems and controls are in place to safeguard client funds and that these processes are being applied correctly on an ongoing basis. Failing to comply with CASS rules can lead to regulatory penalties, reputational damage, and even the withdrawal of a firm’s authorisation. At Millet Accountants, we provide independent CASS assurance services to give firms the confidence that they are meeting their regulatory obligations. We take the time to review your systems, identify any weaknesses, and provide practical recommendations to strengthen your processes. By doing so, we help you reduce risk, protect client interests, and maintain a strong relationship with the regulator. For many firms, regular CASS assurance also demonstrates a commitment to good governance and accountability, which is increasingly valued by clients and stakeholders in London’s competitive financial market.

A CASS audit or assurance review involves a thorough examination of a firm’s systems and controls related to client assets and money. At Millet Accountants, we begin by understanding how your firm operates, the type of client assets you manage, and the processes you currently have in place for reconciliation, segregation, and record-keeping. Our team then reviews your procedures in detail, testing whether they comply with FCA rules and identifying any gaps or areas of risk. If you are required to submit a CASS audit report to the FCA, we prepare this in line with regulatory requirements. Throughout the process, we work closely with you to provide clear explanations and practical advice, avoiding unnecessary jargon or technical complexity. We also provide recommendations to strengthen your internal controls, helping you remain compliant in the long term. Because we also carry out statutory audits, we can deliver a joined-up approach if your firm requires both services. A well-executed CASS audit provides peace of mind not only for regulatory compliance but also for client trust and business reputation, which are essential for success in London’s competitive financial services sector.

Whether your firm needs CASS assurance each year depends on the nature of your business and your regulatory permissions. Firms that hold or control client money and assets are usually required to have a CASS audit or assurance review annually. The FCA uses these reports to confirm that your firm is meeting its obligations and to ensure that client assets are being protected. At Millet Accountants, we recommend that firms review their systems regularly, even outside of the mandatory annual audit, because client asset compliance is an ongoing responsibility rather than a one-off exercise. Changes in your business, such as new services, increased client funds, or growth in transaction volumes, can all affect your CASS obligations. By working with us on a regular basis, you can be confident that your systems remain robust and that you will be fully prepared for your annual audit or FCA review. Our proactive approach ensures that any potential issues are identified and resolved well in advance, helping you to avoid regulatory scrutiny or penalties. For London-based firms operating in a fast-paced financial environment, regular CASS assurance is a vital part of good governance.

Millet Accountants is a trusted London-based accountancy firm with extensive experience in providing CASS assurance and statutory audits for FCA-regulated firms. We understand the complexities of client asset rules and the importance of meeting your regulatory obligations. What sets us apart is our personal and practical approach. We take the time to understand your firm’s unique processes, rather than applying a one-size-fits-all checklist. Our team explains everything clearly, in plain English, so you always know exactly what is required and why. In addition to CASS assurance, we also offer statutory audits and a full range of accountancy services, meaning we can provide a comprehensive solution for your compliance and reporting needs. Because we work closely with regulated firms across London, we stay up to date with the latest FCA guidance and industry best practice. This allows us to offer relevant, timely advice that supports your business growth as well as compliance. By choosing Millet Accountants, you gain more than an audit service – you gain a long-term partner who is invested in your success, your reputation, and the protection of your clients’ assets.