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CASS 7 Audit Companies in the UK: Guide to Providers

Choosing a CASS 7 audit provider in the UK is more than a routine compliance decision. For firms that hold or control client money, the right audit support can help strengthen reporting, reduce regulatory risk, and bring more clarity to how client money arrangements are managed.

The UK has a range of firms offering CASS 7 audit and assurance services, from larger accountancy networks to specialist audit and advisory practices. Each provider brings a different mix of FCA regulatory knowledge, financial services experience, technical audit capability, and practical understanding of client asset rules.

This guide highlights a selection of companies providing CASS 7 audit services in the UK. Rather than ranking providers, the aim is to give practical context – outlining who these firms are, the types of regulated businesses they typically support, and the areas where their CASS-related work is most relevant.

Acumon

Acumon is a UK firm of chartered accountants and registered auditors providing CASS 7 audit services to FCA-regulated investment firms in the UK.

The firm works with organisations ranging from investment managers and wealth advisors through to larger regulated entities that hold or control client assets. CASS audits are delivered in accordance with FCA Client Assets Sourcebook requirements and supported by a structured risk-based audit methodology focused on safeguarding client assets.

Acumon is an ICAEW-registered audit firm with the necessary regulatory standing and expertise to undertake CASS audits for FCA-regulated businesses. CASS audits are specialist regulatory engagements subject to FCA oversight, providing independent assurance on compliance with strict client asset protection rules.

In addition to its UK audit registration, Acumon also holds audit licences in several international financial centres. These licences support broader work with regulated entities operating across jurisdictions.

International group structures frequently involve UK-regulated investment activities alongside offshore entities. Coordinating CASS audit work across these structures requires familiarity with cross-border regulatory requirements and client asset handling processes.

Acumon works with finance teams and boards to support CASS audit requirements while also helping organisations strengthen client asset safeguarding processes, governance arrangements, and internal controls as they grow.

CASS 7 Audit Capabilities:

Acumon provides CASS 7 audit services across a range of organisational structures and regulated sectors.

These include:

  • FCA-regulated investment firms
  • Firms holding or providing custody of client assets
  • Investment managers and wealth advisors subject to CASS rules
  • Organisations operating within multi-jurisdictional structures

CASS audit engagements are typically led by senior audit professionals with direct involvement throughout the engagement.

Regulatory Licences and Registrations:

Acumon holds several audit registrations that enable it to support organisations operating across multiple jurisdictions.

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 allow the firm to provide audit services to groups that include entities in both the UK and key international financial centres.

Core Services:

In addition to statutory external audit, Acumon provides a range of services that support financial reporting and governance.

These include:

  • Statutory external audit
  • Group and subsidiary audits
  • Public Interest Entity (PIE) audits
  • Charity and not-for-profit audit
  • Audit of international group structures
  • Internal audit and governance reviews
  • Risk management and compliance support

Audit work is often delivered alongside discussions with management and boards regarding financial reporting processes and governance frameworks.

Many organisations initially encounter statutory audit requirements as they grow and exceed the audit exemption thresholds set out in the Companies Act.

Acumon works with businesses that are:

  • Approaching their first statutory audit
  • Preparing for external investment
  • Expanding into international markets
  • Operating within corporate group structures

Early engagement with an audit firm can help ensure that financial reporting systems and documentation are aligned with statutory audit requirements.

Contact Information:

BKL

BKL is a UK accountancy and advisory firm that provides CASS audit support for FCA-regulated businesses that hold or control client money. For CASS 7 work, BKL focuses on client money compliance, audit reporting, and the systems and controls behind how regulated firms manage client funds.

BKL also covers wider CASS audit areas, including CASS 5 for insurance, CASS 6 for custody assets, CASS 8 for mandates, and assurance reports where required. A notable part of their work is the option to run CASS audits alongside statutory audits, which can help reduce disruption for firms already going through annual audit work.

Key Highlights:

  • Works with FCA-regulated businesses holding or controlling client money
  • Covers CASS 7 client money audits and other CASS areas
  • Can combine CASS audits with statutory audit work
  • Reviews systems and controls as part of the audit process

Services:

  • CASS 7 audit for client money
  • CASS 5 audit for insurance
  • CASS 6 audit for custody assets
  • CASS 8 audit for mandates
  • Limited Assurance Reports
  • Reasonable Assurance Reports
  • Systems and controls review

Contact Information:

  • Website: bkl.co.uk
  • Twitter: x.com/BKLtweets
  • LinkedIn: www.linkedin.com/company/berg-kaprow-lewis-llp
  • Address: First floor, 5 Fleet Place, London EC4M 7RD
  • Phone: +44 (0)20 7832 0444

Price Bailey

Price Bailey is a chartered accountancy firm with a CASS audit service for firms regulated by the Financial Conduct Authority. Their CASS work is aimed at businesses that hold client money or assets and need assurance over compliance with the FCA Client Assets Sourcebook.

Price Bailey’s CASS audit approach includes reviewing the control environment, checking how client money is handled, and looking at areas such as reconciliations, acknowledgement letters, deposits, withdrawals, and breach reporting. Their experience covers several regulated firm types, including crowdfunding firms, FX trading firms, investment businesses, and firms involved in insurance distribution.

Key Highlights:

  • Provides CASS audits for FCA-regulated firms
  • Works with CASS 5, CASS 6, and CASS 7 requirements
  • Covers limited, reasonable, and hybrid assurance reports
  • Reviews client money controls and reconciliation processes

Services:

  • CASS 6 safe custody audit
  • CASS 5 insurance-related CASS audit
  • CASS 7 client money audit
  • Limited assurance reports
  • Reasonable assurance reports
  • Hybrid assurance reports
  • CASS mapping support

Contact Information:

  • Website: www.pricebailey.co.uk
  • E-mail: mayfair@pricebailey.co.uk
  • Facebook: www.facebook.com/PriceBaileyLLP
  • Twitter: x.com/price_bailey
  • LinkedIn: www.linkedin.com/company/price-bailey
  • Instagram: www.instagram.com/pbpeople
  • Address: 24 Old Bond Street, London, W1S 4AP
  • Phone: 0800 434 6460

Prydis

Prydis provides CASS audit and assurance services for FCA-authorised firms that hold or control client money or custody assets. The firm works with regulated businesses across Devon, Cornwall, the wider South West, and other parts of the UK, with offices in Exeter, Newquay, Liskeard, and Edinburgh.

Prydis covers CASS 5, CASS 6, and CASS 7 audit work, including both reasonable and limited assurance reports. Their process can include a pre-audit assessment, remote or on-site audit delivery, FCA-compliant reporting, and follow-up support for firms that want to strengthen controls after the audit.

Key Highlights:

  • Provides CASS audit support across the South West and nationwide
  • Works with FCA-authorised firms holding client money or custody assets
  • Covers CASS 5, CASS 6, and CASS 7 requirements
  • Offers reasonable and limited assurance reporting
  • Can deliver audits remotely or on-site

Services:

  • CASS 7 client money audit
  • CASS 6 custody asset audit
  • CASS 5 insurance-related audit
  • Reasonable assurance reports
  • Limited assurance reports
  • Pre-audit assessment
  • Control gap review

Contact Information:

  • Website: prydis.com
  • E-mail: mail@prydis.com
  • LinkedIn: www.linkedin.com/company/prydis
  • Address: Clyst House, Manor Drive, Clyst St. Mary, Exeter EX5 1GB 
  • Phone: 01392 432431

Menzies

Menzies is an accounting and advisory firm that provides CASS assurance and statutory audit services to clients across London and the South East. Their CASS 7 services focus strongly on client money reconciliations for designated investment firms, especially the daily internal reconciliation process required under the FCA rules.

Menzies gives detailed attention to how firms calculate the client money requirement and client money resource, including the normal approach, alternative approach, and cases where a non-standard method may need auditor review before FCA approval. Their work is especially relevant for firms that need support around internal and external client money reconciliations, discrepancy handling, documentation, and CASS audit readiness.

Key Highlights:

  • Focuses on CASS 7 client money rules for designated investment firms
  • Covers internal and external client money reconciliation requirements
  • Explains normal, alternative, and non-standard reconciliation methods
  • Highlights record retention, sign-off, and documentation requirements

Services:

  • Statutory audit services
  • CASS 7 assurance support
  • Client money reconciliation review
  • Internal client money reconciliation support
  • External client money reconciliation support
  • Review of client money requirement calculations

Contact Information:

  • Website: www.menzies.co.uk
  • E-mail: mayres@menzies.co.uk
  • LinkedIn: www.linkedin.com/company/menzies-llp
  • Instagram: www.instagram.com/menzies_llp
  • Address: The Colmore Building 20 Colmore Circus Queensway Birmingham B4 6AT
  • Phone: +44 (0)333 091 0411

Hillier Hopkins

Hillier Hopkins is a chartered accountancy and tax advisory firm that works with firms needing Client Money and Custody Asset assurance reports. Their CASS-related work covers firms that may need an independent report even when they do not require a statutory audit, which is an important point for regulated businesses that are unsure about their reporting position.

Hillier Hopkins separates CASS reporting by firm type, including designated investment firms, electronic money institutions, payment services firms, and mortgage and general insurance firms. They focus on designated investment firms that fall under the FCA client money rules, with support around deciding whether a reasonable assurance, limited assurance, or hybrid report is needed.

Key Highlights:

  • Supports firms with Client Money and Custody Asset assurance reports
  • Helps firms understand which type of assurance report applies
  • Works with reasonable, limited, and hybrid assurance reports

Services:

  • CASS 7 assurance reporting
  • CASS 6 custody asset assurance reporting
  • Reasonable assurance reports
  • Limited assurance reports
  • Hybrid assurance reports
  • CASS reporting requirement review

Contact Information:

  • Website: hillierhopkins.co.uk
  • E-mail: hi@hhllp.co.uk
  • Address: 45 Pall Mall, London, SW1Y 5JG 
  • Phone: +44 (0)20 7930 7797

MAH Chartered Accountants

MAH Chartered Accountants is a London-based firm with CASS audit experience for financial services businesses. Their CASS work is centred on the FCA handbook rules for CASS 5 and CASS 7, with a clear focus on client money audits for firms that either hold client money or need a limited assurance review because they do not.

MAH works with FCA-authorised firms across areas such as foreign exchange trading platforms, CFD and options trading, insurance broking, wealth management, hedge funds, introducers, and corporate finance. Their CASS audit process is quite direct: they first understand the business and its systems, then test transactions and reconciliations, and finally prepare the CASS report while agreeing any issues or breaches before submission through FCA Connect.

Key Highlights:

  • Provides CASS audits for FCA-authorised financial services firms
  • Covers CASS 5 and CASS 7 sections of the FCA handbook
  • Works with full audits and limited assurance reviews
  • Reviews client onboarding, AML/KYC, trading flows, and client money processes
  • Tests client money reconciliations and transaction samples

Services:

  • CASS 5 audit support
  • CASS 7 audit for client money
  • Reasonable assurance audits
  • Limited assurance reviews
  • CASS audit planning
  • Transaction sample testing

Contact Information:

  • Website: www.mah.uk.com
  • E-mail: enquiries@mah.uk.com
  • Facebook: www.facebook.com/p/MAH-Chartered-Accountants-100068129359509
  • LinkedIn: www.linkedin.com/company/mah-chartered-accountants
  • Instagram: www.instagram.com/mahca2011
  • Address: 2nd Floor, 154 Bishopsgate, London, EC2M 4LN
  • Phone: 0207 100 3610

Wisteria

Wisteria is an accountancy firm that provides audit and advisory support for businesses, including firms that need to understand their CASS reporting position. Their CASS service is aimed mainly at designated investment firms that hold or control client assets or investments and need to comply with FCA requirements.

Wisteria places CASS audits in the wider context of client asset protection, especially after the Lehman Brothers collapse brought more attention to how client money and custody assets are safeguarded. For CASS 7, Wisteria focuses on client money rules, the four-month reporting deadline, and the difference between reasonable assurance, limited assurance, and hybrid assurance reports.

Key Highlights:

  • Works with businesses that need CASS audit and reporting support
  • Focuses on designated investment firms and FCA client asset rules
  • Covers CASS 7 client money and CASS 6 custody asset requirements
  • Explains when reasonable, limited, or hybrid assurance may apply

Services:

  • CASS audit support
  • CASS 7 client money assurance
  • CASS 6 custody asset assurance
  • Reasonable assurance reports
  • Limited assurance reports
  • Hybrid assurance reports
  • Accountancy services

Contact Information:

  • Website: wisteria.co.uk
  • Facebook: www.facebook.com/WisteriaAccountants
  • Twitter: x.com/wisterialtd
  • LinkedIn: www.linkedin.com/company/wisteria-limited
  • Address: The Grange Barn, Pike’s End, Pinner, London, HA5 2EX
  • Phone: 020 4546 7630

KPMG

KPMG provides CASS advisory and assurance-related support for regulated firms that need to review, strengthen, or monitor their client asset arrangements. Their work looks beyond the audit file itself and covers how CASS processes, controls, accountability, and reporting sit across the wider business.

KPMG’s CASS focuses on several areas that matter to firms under FCA scrutiny, including client money segregation, custody asset registration, SMCR accountability, operating model design, CASS RP reviews, CMAR reviews, training, and regulatory change.

Key Highlights:

  • Provides CASS support for regulated financial services firms
  • Covers CASS operations, controls, governance, and regulatory change
  • Works across CASS reviews, monitoring, training, and operating model work
  • Addresses SMCR accountability in relation to CASS compliance

Services:

  • CASS advisory support
  • CASS assurance reviews
  • CASS operating model review
  • CASS RP review
  • CMAR review
  • End-to-end control reviews
  • CASS monitoring support

Contact Information:

  • Website: kpmg.com
  • Facebook: www.facebook.com/KPMG
  • Twitter: x.com/kpmguk
  • LinkedIn: www.linkedin.com/company/kpmg-uk
  • Address: One Snowhill, Snowhill Queensway, B4 6GH , Birmingham, UK  
  • Phone: +44 (0)121 232 3000

Gravita

Gravita is an accountancy and advisory firm with financial services audit experience, including CASS audits for firms that hold or control client money and assets. Their CASS work is connected to FCA-regulated businesses that need independent audit review of client asset protection, segregation, records, reconciliations, controls, and reporting.

Gravita covers the main CASS areas that apply to different regulated firms, including CASS 5 for insurance brokers, CASS 6 for custody assets, and CASS 7 for client money. Their services also put emphasis on audit deadlines, with CASS audit reports generally due within four months of the firm’s financial year-end.

Key Highlights:

  • Provides CASS audit support for FCA-regulated businesses
  • Covers firms holding client money, custody assets, or insurance-related client money
  • Works with CASS 5, CASS 6, and CASS 7 requirements
  • Reviews segregation, record-keeping, reconciliations, and controls
  • Notes the four-month deadline for annual CASS audit report submission

Services:

  • CASS 7 client money audit
  • CASS 6 custody asset audit
  • CASS 5 audit support
  • Financial services audit
  • CASS compliance review
  • Client asset segregation review
  • Record-keeping review

Contact Information:

  • Website: www.gravita.com
  • E-mail: hello@gravita.com
  • Twitter: x.com/TeamGravita
  • LinkedIn: www.linkedin.com/company/gravita-uk
  • Instagram: www.instagram.com/gravita_uk
  • Address: 2nd Floor, South, One Castle Park, Tower Hill, Bristol BS2 0JA
  • Phone: 020 7330 0000

PwC

PwC works with financial services firms on CASS 7 client money rules, with a focus on audit, assurance, regulatory compliance, and control issues around client funds. Their CASS work is relevant for firms that need to keep client money separate from firm money, maintain clear records, obtain proper bank acknowledgements, and support both internal and external reconciliation processes.

A detailed area of PwC’s CASS 7 work is money market deposits. PwC looks at the risks that can arise when client money is placed in MMDs, including unclear ownership, weak bank confirmations, missing acknowledgement letters, poor record-keeping, and balances being left out of internal reconciliations. This makes PwC relevant for larger or more complex firms where client money arrangements involve several parties, treasury teams, banks, custodians, and operational handovers.

Key Highlights:

  • Covers segregation, safeguarding, reconciliation, and record-keeping
  • Reviews risks linked to money market deposits
  • Focuses on acknowledgement letters and legal ownership of client money
  • Looks at internal controls across treasury, operations, and compliance teams

Services:

  • Client money controls review
  • CASS 7 audit and assurance support
  • Money market deposit risk review
  • Acknowledgement letter review
  • Internal reconciliation review
  • External reconciliation review
  • Client money record-keeping

Contact Information:

  • Website: www.pwc.com
  • Facebook: www.facebook.com/PwCUK
  • LinkedIn: www.linkedin.com/company/pwc-uk
  • Instagram: www.instagram.com/pwc_uk
  • Address: The Capitol, 431 Union Street, Aberdeen, AB11 6DA
  • Phone: +44 (0)1224 210100

RSM

RSM works with financial services firms on client money and asset protection, including CASS rules and related risk and regulation support. Their CASS work is aimed at firms that hold or control client assets and need to show that their arrangements are properly managed, monitored, and supported by clear internal controls.

RSM’s approach covers more than the annual audit requirement. They support firms with CASS requirements, assurance reviews, forensic analysis, annual CASS audit preparation, operational process reviews, internal reporting, management information, and CASS resolution packs. This makes RSM relevant for firms that want to review their wider CASS framework, not only complete the required reporting cycle.

Key Highlights:

  • Works with financial services firms on client money and assets
  • Covers CASS compliance, controls, reporting, and governance
  • Supports firms that submit client money and asset returns to the FCA
  • Reviews segregation of client money and allocation of assets
  • Provides assurance reviews and forensic analysis where needed
  • Helps firms review or develop CASS resolution packs

Services:

  • CASS compliance support
  • Client money and asset assurance reviews
  • Annual CASS audit preparation
  • Forensic analysis for CASS compliance evidence
  • Operational process review
  • Internal CASS reporting review

Contact Information:

  • Website: www.rsmuk.com
  • LinkedIn: www.linkedin.com/company/rsm-uk
  • Instagram: www.instagram.com/rsm.uk
  • Address: 14th Floor, 20 Chapel Street, Liverpool, L3 9AG  
  • Phone: +44 (0)151 600 2600

Deloitte

Deloitte provides CASS support for financial institutions that need to protect client money and assets under FCA rules. Their work covers firms across capital markets, retail financial services, wealth management, insurance broking, fintech, crowdfunding, and peer-to-peer platforms.

Deloitte’s CASS work is built around client asset segregation, insolvency protection, internal controls, and regulatory assurance. They support firms with external CASS audit work, internal controls assurance, FCA review readiness, regulatory change, operating model reviews, and gap analysis where client asset arrangements need closer attention.

Key Highlights:

  • Works with financial institutions across several regulated sectors
  • Covers client asset protection and segregation controls
  • Supports firms in capital, retail, wealth management, insurance, and fintech markets
  • Provides CASS assurance under FRC CASS Assurance Standard
  • Covers internal controls assurance under ISAE 3000

Services:

  • CASS external audit services
  • CASS internal controls assurance
  • Operating model review
  • Internal controls review
  • FCA regulatory visit support
  • Business acquisition and disposal support

Contact Information:

  • Website: www.deloitte.com
  • Facebook: www.facebook.com/deloitteuk
  • Twitter: x.com/deloitteuk
  • LinkedIn: www.linkedin.com/company/deloitte
  • Address: 1 City Square Leeds, LS1 2AL United Kingdom 
  • Phone: +44 (0)113 243 9021

Saffery

Saffery is an accountancy and advisory firm that works with FCA-regulated firms on CASS audit requirements. Their CASS work focuses on whether firms need a reasonable assurance, limited assurance, or hybrid report, depending on their permissions and whether they hold or control client money or assets.

Saffery gives particular attention to the technical rules behind CASS audits, including the FCA Handbook, the Client Assets Sourcebook, the Supervision Sourcebook, reporting deadlines, and the lack of materiality in reasonable assurance CASS reports.

Key Highlights:

  • Supports FCA-regulated firms with CASS audit requirements
  • Covers reasonable, limited, and hybrid assurance reports
  • Works with firms that hold or control client money and assets
  • Explains how CASS and SUP rules affect reporting duties

Services:

  • CASS audit support
  • Reasonable assurance reporting
  • Limited assurance reporting
  • Hybrid assurance reporting
  • CASS reporting requirement review
  • CASS deadline planning
  • Support for professional practice firms

Contact Information:

  • Website: www.saffery.com
  • E-mail: info@saffery.com
  • LinkedIn: www.linkedin.com/company/saffery
  • Instagram: www.instagram.com/saffery_uk
  • Address: 71 Queen Victoria Street, London EC4V 4BE, UK 
  • Phone:  +44 (0)20 7841 4000

Millet Audit

Millet Audit is a chartered accountancy and registered audit firm providing CASS audits for FCA-regulated firms, including businesses in Manchester. Their CASS audit work reviews whether client money and asset procedures meet FCA Client Assets Sourcebook requirements, with attention to reconciliations, segregation, accounting records, and internal monitoring.

Millet Audit delivers CASS audits through a remote service model, which may suit firms with hybrid teams, several locations, or digital finance processes. Their audits look at compliance procedures and financial controls, while also giving firms clear findings on weaknesses that may affect governance, reporting accuracy, or client money protection.

Key Highlights:

  • Provides CASS audits for FCA-regulated firms
  • Works with businesses handling client money and assets
  • Reviews reconciliations, segregation, records, and monitoring systems

Services:

  • CASS audits
  • Client money controls review
  • Client asset protection review
  • Reconciliation testing
  • Segregation procedure
  • Internal monitoring review

Contact Information:

  • Website: milletaudit.com
  • E-mail: info@milletaudit.com 
  • Address: Aldgate Tower, 2 Leman Street, London, E1 8FA 
  • Phone: +44 (0) 203 084 4550

Conclusion

Choosing a CASS 7 audit provider is usually not about picking the biggest name or the longest list of services. Regulated firms tend to look at whether the provider understands the FCA’s client money rules, has experience with similar business models, and can explain the audit process clearly without adding more confusion.

This guide is not intended to rank CASS 7 audit companies. Its purpose is to give a clearer view of the types of providers available in the UK and the different areas they cover, so firms can make a more informed decision before starting conversations with potential auditors or advisers.