CASS 5 Audit Companies in Glasgow: A Practical Guide to Providers
AC
Acumon Chartered Accountants·7 min read
For firms operating under the FCA's CASS 5 rules, selecting the right audit and assurance provider is about more than meeting regulatory requirements. Effective oversight of client money arrangements can help strengthen governance, improve operational resilience and provide greater confidence to management and regulators alike.
Glasgow is home to a diverse professional services market, ranging from established accountancy practices to specialist regulatory advisors supporting businesses across financial services. Different firms bring different strengths, whether in client money audits, compliance frameworks, risk management or broader assurance services.
This guide highlights a selection of companies providing CASS 5 audit and related assurance services in Glasgow. Rather than ranking providers, the aim is to offer practical context on the firms operating in the market, the types of organisations they support, and the areas where their expertise may be most relevant.
Acumon
Acumon is a UK firm of chartered accountants and registered auditors providing CASS 5 audit services to firms and organisations across Glasgow and the wider UK market.
The firm supports regulated businesses ranging from insurance intermediaries and brokers through to larger organisations operating within FCA-regulated environments. CASS 5 audit engagements are designed to provide assurance over client money arrangements, support regulatory compliance and strengthen internal governance frameworks.
Acumon provides CASS 5 audit support across a range of regulatory and reporting requirements, including client money reviews, control assessments, compliance testing and reporting under the FCA Client Assets Sourcebook (CASS). Services are delivered using a structured and risk-based methodology tailored to each organisation’s regulatory obligations and operating model.
Acumon holds a Public Interest Entity (PIE) audit licence, enabling the firm to support organisations subject to enhanced regulatory oversight in the United Kingdom. Alongside its UK statutory audit registration, the firm also maintains audit licences in the Cayman Islands, British Virgin Islands (BVI), Jersey and Isle of Man, supporting organisations operating across international structures and reporting environments.
Businesses handling client money are often required to maintain effective control environments, governance procedures and reporting processes to satisfy FCA expectations. Acumon works with compliance teams, boards and management to support regulatory oversight, strengthen internal controls and maintain compliance with applicable requirements.
CASS 5 Audit Capabilities
Acumon supports CASS 5 audit engagements across a broad range of regulated entities and operational environments.
These include:
insurance intermediaries and brokers
FCA-regulated firms handling client money
organisations subject to CASS 5 requirements
multi-entity and group structures
businesses with cross-border operations
regulated entities with complex control frameworks
CASS 5 reviews are delivered by experienced professionals with direct involvement throughout the engagement and reporting process.
Regulatory Licences and Registrations
The firm maintains a range of regulatory registrations and audit authorisations supporting organisations operating across domestic and international markets.
These include:
UK statutory audit registration
Public Interest Entity (PIE) audit licence
Jersey audit licence
Isle of Man audit licence
Cayman Islands audit licence
British Virgin Islands audit licence
These registrations enable the firm to support regulated businesses operating across multiple jurisdictions and international group structures.
Core Services
In addition to CASS 5 audit services, Acumon provides a broader range of services supporting governance, reporting and regulatory compliance.
These include:
CASS 5 audits and client money reviews
regulatory compliance assessments
statutory external audit
group and subsidiary audits
Public Interest Entity (PIE) audits
charity and not-for-profit audit
internal audit and governance reviews
risk management and compliance support
CASS 5 engagements are often delivered alongside discussions concerning client money controls, regulatory reporting obligations and governance arrangements.
As regulated firms evolve, expand operations or introduce more complex structures, compliance requirements and oversight expectations can become increasingly demanding.
Acumon works with businesses that are:
managing client money obligations
preparing for FCA oversight
operating within corporate group structures
strengthening governance and control procedures
expanding regulated activities
Early engagement can help organisations improve control environments, support regulatory readiness and maintain effective compliance processes.
Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Phone: 020 8567 3451
Deloitte
Deloitte provides CASS-related services through its Risk Advisory practice, supporting financial institutions with the interpretation and application of FCA client asset rules. Their work covers a range of areas linked to CASS oversight, including control assessments, regulatory reviews and support for firms managing client money obligations under the FCA framework. CASS 5 compliance forms part of a wider focus on governance, risk and regulatory requirements within financial services.
CASS engagements are approached collaboratively, with an emphasis on identifying control weaknesses and addressing issues as they arise during reviews. Alongside audit-related work, they offer support around regulatory change, remediation activities and oversight responsibilities, reflecting the practical challenges firms face when maintaining compliant client money arrangements.
Key Highlights:
Experience supporting financial institutions with CASS compliance
CASS advisory delivered through Risk Advisory services
Focus on governance and control environments
Support for FCA reviews and regulatory changes
Experience with audit remediation and oversight functions
Coverage of risk and compliance matters linked to client assets
Services:
CASS assessments and reviews
CASS oversight support
FCA regulatory review support
Audit findings remediation
Risk and control management
Regulatory change advisory
CASS training and guidance
Contact Information:
Website: www.deloitte.com
Facebook: www.facebook.com/deloitteuk
Twitter: x.com/deloitteuk
LinkedIn: www.linkedin.com/company/deloitte
Address: 110 Queen Street, Glasgow, G1 3BX, United Kingdom
Phone: +44 (0)141 204 2800
Johnston Carmichael
Johnston Carmichael works with regulated firms on CASS and safeguarding requirements, with a dedicated team focused on client asset compliance. Their approach recognises that CASS 5 obligations can vary depending on business models, operational processes and governance structures. This is particularly relevant for insurance intermediaries and other firms that handle client money under FCA rules.
An area that stands out in their offering is the connection between CASS audits and technology controls. Their audit teams collaborate with IT specialists to assess systems, applications and control frameworks that support ongoing compliance. In addition to annual audits, they provide insights into emerging regulatory developments, including changes affecting safeguarding requirements.
Key Highlights:
Dedicated CASS and safeguarding audit team
Experience across regulated financial services firms
Integration of IT audit into CASS reviews
Focus on governance and operational controls
Support with regulatory developments
Experience with assurance engagements and management reporting
RSM supports financial services firms with client money and asset compliance through its financial services risk and regulation practice. Their work covers areas linked to CASS requirements, including assurance reviews, annual CASS audits and assessments of operational controls designed to protect client money. Firms operating under CASS 5 often face ongoing reporting and governance obligations, and these services are positioned around helping businesses maintain compliant arrangements.
Beyond audit activity, attention is given to how client money processes operate in practice. This includes reviewing reporting frameworks, resolution packs and control environments to identify gaps or areas that may require improvement. Engagements can range from standalone projects to broader programmes of work depending on a firm's regulatory needs.
Address: 4th Floor, G1, 5 George Square, Glasgow, G2 1DY
Phone: +44 (0)141 285 3900
Forvis Mazars
Forvis Mazars provides CASS and safeguarding support to firms operating across financial services, including insurance, banking and payment services. Their work reflects the increased regulatory attention on client asset protection and the need for firms to maintain strong governance and oversight arrangements. CASS 5 requirements are often closely linked to wider control frameworks, particularly for businesses handling client money.
A notable aspect of their approach is the involvement of specialists from different areas, including IT and risk. As regulatory expectations continue to evolve, assessments increasingly consider how systems, reconciliations and data flows contribute to ongoing compliance. In addition to annual assurance work, support extends to identifying control gaps and remediation activities.
Key Highlights:
Experience across multiple financial services sectors
Focus on governance and client asset protection
Support covering CASS and safeguarding requirements
Address: 100 Queen Street, Glasgow, G1 3DN, United Kingdom
Phone: +44 141 227 2400
Conclusion
Choosing a CASS 5 audit provider in Glasgow involves more than meeting a regulatory requirement. Firms handling client money need assurance that controls are working effectively, governance arrangements remain fit for purpose, and compliance processes can stand up to regulatory scrutiny. As FCA expectations continue to evolve, many organisations are taking a closer look at how their systems, oversight and reporting frameworks operate in practice.
The companies featured in this guide reflect the variety of support available in the market, from specialist CASS audit teams and risk advisors to technology providers focused on reconciliation and compliance. The right choice will often depend on a firm's business model, the complexity of its client money arrangements, and the level of ongoing support required. Looking beyond the audit itself and considering broader governance and control capabilities can help firms build a more resilient approach to CASS compliance over time.
AC
Written by the Acumon team
Acumon is an ICAEW-registered firm of chartered accountants and registered auditors
based in London, with offices in Pitstone, Aylesbury and Bournemouth. Need advice on
anything covered here? Talk to us.
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