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Interim Review Companies in UK: A Guide to Financial Assurance Providers

Interim reviews play an important role in the financial reporting cycle, particularly for listed companies and organisations operating in regulated environments. While less extensive than a full audit, an interim review provides a level of assurance over financial information and can help identify issues before year-end reporting takes place.

Across the UK, a range of firms provide interim review services, each bringing different sector experience, methodologies, and areas of expertise. Some focus on listed entities and financial reporting requirements, while others support businesses with broader assurance and governance needs.

This guide highlights a selection of interim review companies operating in the UK. Rather than ranking providers, the aim is to offer practical context on the services they provide, the types of organisations they support, and the role interim reviews can play in strengthening financial oversight and reporting confidence.

Acumon

Acumon is a UK firm of chartered accountants and advisors providing interim review services to companies and organisations across the UK.

The firm works with organisations ranging from growing owner-managed businesses through to larger corporate groups and regulated entities. Interim review engagements are designed to provide additional financial oversight, strengthen reporting processes and support organisations during periods of transition, growth or change.

Acumon provides interim review support across a range of financial and operational requirements, including management reporting, financial controls, governance reviews and strategic financial oversight. Services are delivered by experienced finance professionals and tailored to the specific needs, structure and objectives of each organisation.

Acumon holds a Public Interest Entity (PIE) audit licence, enabling the firm to support organisations subject to enhanced regulatory oversight in the United Kingdom. In addition to 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 undergoing periods of expansion, restructuring or leadership change often require additional financial oversight and specialist expertise. Acumon works with boards, finance teams and management to support reporting processes, governance arrangements and operational decision-making while helping organisations strengthen internal controls as they grow.

Interim Review Capabilities

Acumon provides interim review services across a wide range of organisational structures and sectors.

These include:

  • UK limited companies and corporate groups
  • regulated organisations and Public Interest Entities (PIEs)
  • interim finance director assignments
  • part-time CFO engagements
  • interim financial controller support
  • temporary senior accounting roles
  • international group structures
  • charities and not-for-profit organisations 

Engagements are typically led by experienced finance professionals with direct involvement throughout the assignment.

Regulatory Licences and Registrations

Acumon maintains 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 support organisations operating across both the UK and key international financial centres.

Core Services

In addition to interim review services, Acumon provides a range of services that support financial reporting, governance and operational oversight.

These include:

  • interim finance director support
  • part-time CFO services
  • 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

Interim review work is often delivered alongside discussions with management and boards regarding financial reporting processes, governance frameworks and operational performance.

Many organisations require interim financial support as they grow, undergo transformation or navigate periods of change.

Acumon works with businesses that are:

  • managing periods of growth or transition
  • preparing for investment or funding activity
  • operating within corporate group structures
  • strengthening financial controls and reporting processes
  • undergoing restructuring or leadership change

Early engagement can help ensure that reporting systems, governance arrangements and financial controls are aligned with organisational objectives.

Contact Information

Interim Management Limited

Interim Management Limited operates as an independent UK compliance consultancy with a focus on regulatory oversight, governance and interim support. Within the context of interim reviews, their services relate closely to compliance monitoring, control assessments and the implementation of regulatory requirements across regulated businesses.

A significant part of their work sits around helping organisations address compliance challenges as they arise, whether through interim management appointments, governance reviews or due diligence exercises. Their approach combines practical support with ongoing monitoring, which can contribute to stronger oversight and more structured review processes.

Key Highlights

  • Independent UK compliance consultancy
  • Experience in regulatory and governance matters
  • Interim management and compliance review capabilities
  • Member of the Association of Professional Compliance Consultants
  • Support for FCA-related requirements and oversight
  • Focus on monitoring and regulatory implementation

Services

  • Interim management
  • Compliance advice
  • Governance and company secretarial support
  • Compliance reviews and continuing monitoring
  • FCA authorisation
  • Policy and procedure development
  • Regulatory implementation
  • Training and competence
  • Treating Customers Fairly reviews
  • Money laundering and sanctions support
  • Complaint handling
  • Due diligence

Contact Information

  • Website: www.interimmanagementlimited.co.uk
  • Email: modell@interimmanagementlimited.co.uk
  • Facebook: www.facebook.com/100009476684236
  • Twitter: x.com/hellodellodell
  • Address: Westbury, Grayswood Road, Haslemere, GU27 2BS
  • Phone: 01428 642687

SAIL Internal Audit Limited

SAIL Internal Audit Limited focuses on internal audit and interim management services, primarily supporting local authorities and public sector organisations. In the area of interim reviews, their work is connected to assessing controls, reviewing processes and providing assurance over operational activities.

Working closely with organisations, they examine how existing systems function in practice and identify areas where governance or oversight may be strengthened. Their specialist approach reflects the particular reporting and accountability requirements often found within the public sector.

Key Highlights

  • Focus on public sector and local authority organisations
  • Internal audit and interim management services
  • Experience in governance and assurance activities
  • Flexible audit support model
  • Specialist internal audit capabilities
  • Process review and assessment expertise

Services

  • Internal audit services
  • Interim management
  • Specialist internal audit support

Contact Information

  • Website: theinternalauditor.co.uk
  • Email: info@theinternalauditor.co.uk
  • Address: Cynefail, Llanrhaeadr, Denbigh, Denbighshire, LL16 4NW
  • Phone: 07818 641862

Interim Assistance

Interim Assistance supports international and investor-backed technology businesses with finance and administration functions in the UK. Their work intersects with interim reviews through financial reporting, governance and compliance activities that help organisations maintain oversight as they establish or expand operations.

Many of the businesses they support face changing reporting requirements during periods of growth. By bringing finance, payroll, governance and administrative responsibilities together within one team, they help businesses maintain continuity and meet operational obligations across different stages of development.

Key Highlights

  • Supports international and technology businesses
  • UK finance and administration expertise
  • Focus on governance and compliance processes
  • Experience with UK market entry and scaling businesses
  • Independent company structure
  • Integrated operational support model

Services

  • UK entity setup
  • Financial reporting
  • Governance support
  • Payroll administration
  • HR support
  • Compliance management
  • Business administration services

Contact Information

  • Website: www.interimassistance.com
  • Email: timshaw@interimassistance.com
  • Address: 2 Minton Place, Victoria Road, Bicester, Oxfordshire, OX26 6QB
  • Phone: 07710 172407

FSCom

FSCom operates in the regulatory compliance sector, supporting financial institutions, fintech firms and asset managers across the UK and Ireland. Interim review activities form part of their wider governance and assurance work, particularly where organisations require temporary compliance expertise or additional oversight during periods of change.

Their interim solutions cover a range of regulatory functions, including compliance monitoring, risk management and audit-related responsibilities. This type of support can be relevant for firms responding to new regulations, preparing for reviews or strengthening internal control frameworks.

Key Highlights

  • Focus on regulated financial services firms
  • UK and EU regulatory expertise
  • Interim compliance and risk specialists
  • Experience across fintech and asset management sectors
  • Support for governance and control frameworks
  • Assurance and audit capabilities

Services

  • Interim compliance solutions
  • Compliance advisory
  • Assurance and audit
  • Regulatory change support
  • AML and financial crime support
  • Compliance monitoring
  • Policy development
  • Authorisation services
  • Risk management support

Contact Information

  • Website: fscom.co
  • Email: info@fscom.co
  • Twitter: x.com/fscom1
  • LinkedIn: www.linkedin.com/company/fscom-limited
  • Address: 46 New Broad Street, London
EC2M 1JH
  • Phone: +44 (0)20 3327 7337

EY

EY provides restructuring, turnaround and interim management services as part of its broader advisory offering. In the context of interim reviews, these activities can support organisations facing operational challenges, reporting pressures or periods of significant change that require additional oversight.

Complex business situations often involve increased scrutiny from stakeholders, lenders and regulators. Through interim leadership roles and advisory support, organisations may gain additional structure around performance monitoring, governance and financial reporting during transition periods.

Key Highlights

  • Interim management and restructuring expertise
  • Board-level advisory support
  • Experience in business transformation
  • Financial and operational oversight capabilities
  • Focus on stakeholder management
  • Global professional services network

Services

  • Interim management
  • Restructuring support
  • Turnaround advisory
  • Board advisory
  • Financial restructuring
  • Business stabilisation
  • Tax impact assessment
  • Strategy consulting
  • Corporate finance advisory

Contact Information

  • Website: www.ey.com
  • Facebook: www.facebook.com/EYParthenon
  • Twitter: x.com/EY_Parthenon
  • LinkedIn: www.linkedin.com/company/ey-parthenon
  • Address: 1 More London Place, London SE1 2AF
  • Phone: +44 20 7951 2000

RSM UK

RSM UK provides audit, tax and consulting services across a range of sectors. Their work on interim reporting highlights the importance of clear disclosures, risk communication and financial transparency, all of which are closely linked to interim review processes in the UK market.

Guidance around interim reporting often focuses on helping organisations communicate material information effectively and maintain compliance with reporting standards. This creates a natural connection between interim reviews, governance expectations and broader financial reporting obligations.

Key Highlights

  • Audit and consulting practice in the UK
  • Experience with financial reporting standards
  • Focus on interim reporting guidance
  • Expertise in governance and risk matters
  • Support across multiple sectors
  • Knowledge of regulatory developments

Services

  • Audit services
  • Risk and governance advisory
  • Financial reporting support
  • Consulting services
  • Business transformation
  • Restructuring
  • Forensic investigations
  • Tax advisory

Contact Information

  • Website: www.rsmuk.com
  • LinkedIn: www.linkedin.com/company/rsm-uk
  • Instagram: www.instagram.com/rsm.uk
  • Address: 10th Floor, 103 Colmore Row, Birmingham, B3 3AG
  • Phone: +44 (0)121 214 3100

Bishop Fleming

Bishop Fleming provides audit and assurance services to organisations across the UK, including corporate groups, public sector bodies and not-for-profit entities. Interim audits form part of their audit process, allowing businesses to review financial information before year-end and identify issues at an earlier stage.

Interim review work can support stronger reporting processes by reducing time pressures and enabling earlier testing of controls and financial data. This approach aligns with broader governance objectives and helps organisations maintain oversight throughout the reporting cycle.

Key Highlights

  • UK audit and assurance firm
  • Interim audit capabilities
  • Experience across multiple sectors
  • Support for corporate and public sector organisations
  • Focus on risk assessment and financial oversight
  • Large audit practice

Services

  • External audit
  • Interim audits
  • Risk assessment
  • Data analysis
  • Financial reporting support
  • Internal audit and risk assurance
  • Grant audits
  • Regulatory audits
  • Assurance services

Contact Information

  • Website: www.bishopflemingaudit.co.uk
  • Facebook: www.facebook.com/100093464198343
  • Twitter: x.com/BishopFlemingUK
  • LinkedIn: www.linkedin.com/company/bishop-fleming-chartered-accountants
  • Instagram: www.instagram.com/bishopfleminguk
  • Address: 55 Colmore Row, Birmingham, B3 2AA
  • Phone: 03333 219000

McTear Williams & Wood

McTear Williams & Wood focuses on business rescue, insolvency and turnaround support for companies facing financial pressure. Within the context of interim reviews, their services are linked to independent assessments, financial oversight and situations where lenders or stakeholders require a clearer understanding of a business’s position.

Periods of financial stress often create a need for external review and short-term management support. Their approach includes helping directors examine funding options, address cash flow concerns and navigate restructuring processes while maintaining visibility over financial performance and risks.

Key Highlights

  • Business rescue and insolvency focus
  • Turnaround management support
  • Experience with independent business reviews
  • Assistance during financial distress
  • Support for lender and stakeholder requirements
  • UK-wide office network

Services

  • Turnaround management
  • Business reviews
  • Insolvency support
  • Funding advisory
  • Bridge finance assistance
  • Creditor guidance
  • Director support
  • Financial health assessments
  • Restructuring advice

Contact Information

  • Website: www.mw-w.com
  • Email: robinmeynell@mw-w.com
  • Address: Fort Dunlop, Fort Parkway, Birmingham, B24 9FE
  • Phone: 0121 296 3402 

Kirk Rice

Kirk Rice provides interim accounting support to businesses that need additional finance expertise during periods of change. Their offering connects closely with interim reviews through financial reconciliations, management reporting and assessments of accounting systems and internal processes.

Some organisations bring in external specialists when preparing for audits, dealing with compliance matters or catching up on historical records. By reviewing systems, people and procedures, they help businesses improve financial visibility and maintain reporting standards across day-to-day operations.

Key Highlights

  • Interim accounting and finance support
  • Accounting system review capabilities
  • Support for audit preparation
  • Experience with HMRC compliance matters
  • Temporary finance leadership services
  • Assistance with reporting and reconciliations

Services

  • Accounting software upgrades
  • Software training
  • Interim finance leadership
  • Financial reconciliations
  • Management accounts
  • Forecasting
  • VAT advice
  • HMRC compliance support
  • Process reviews
  • Overseas company support

Contact Information

  • Website: www.kirkrice.co.uk
  • Email: info@kirkrice.co.uk
  • Facebook: www.facebook.com/kirkricellp
  • LinkedIn: www.linkedin.com/company/kirk-rice-accountants
  • Instagram: www.instagram.com/kirkriceaccountants
  • Address: 10 Lower Thames Street, Billingsgate, London, EC3R 6AF
  • Phone: +44 (0)203 004 2232

Secantor Business Services

Secantor Business Services specialises in interim CFO and finance leadership support for SMEs. Their services are relevant to interim reviews where businesses require stronger financial oversight, improved reporting or additional governance during periods of transition.

Changes such as restructuring, transactions or leadership gaps can increase the need for reliable financial information and decision-making processes. Through board-level support and finance function oversight, they contribute to greater control over cash flow, reporting and internal frameworks.

Key Highlights

  • Interim CFO services for SMEs
  • Board-level financial support
  • Focus on financial governance
  • Support during periods of change
  • Experience with transactions and restructuring
  • Finance function oversight

Services

  • Interim CFO support
  • Fractional CFO services
  • Financial planning
  • Cash flow management
  • Management reporting
  • Internal controls
  • Due diligence support
  • Transaction advisory
  • Finance team development
  • Forecasting

Contact Information

Forvis Mazars

Forvis Mazars operates across audit, advisory and financial reporting services, supporting organisations in a wide range of sectors. Interim reviews form part of the broader reporting landscape they address, particularly where businesses need to respond to changing accounting standards, regulatory developments or evolving market conditions.

As interim reporting periods approach, companies often face questions around disclosures, estimates and emerging risks. Their published insights show a focus on helping organisations navigate reporting requirements while maintaining transparency and consistency in financial statements.

Key Highlights

  • International audit and advisory network
  • Focus on financial and corporate reporting
  • Experience across multiple industries
  • Guidance on interim reporting requirements
  • Knowledge of IFRS developments
  • Governance and risk expertise

Services

  • Audit and assurance
  • Financial advisory
  • Accounting and outsourcing
  • Risk consulting
  • Independent reviews
  • Corporate reporting support
  • Restructuring and insolvency
  • Tax services
  • Sustainability advisory
  • International business support

Contact Information

  • Website: www.forvismazars.com
  • Twitter: x.com/ForvisMazarsUK
  • LinkedIn: www.linkedin.com/company/forvis-mazars-in-the-uk
  • Instagram: www.instagram.com/forvismazarsuk
  • Address: 3 Chamberlain Square, Birmingham, B3 3AX, United Kingdom
  • Phone: +44 (0) 121 232 9500

Moore Global

Moore Global provides audit, advisory and reporting services through an international network of member firms. Their resources on IAS 34 Interim Financial Reporting highlight the framework organisations use when preparing interim financial statements under IFRS.

Interim reviews rely on consistent accounting policies and clear disclosures between reporting periods. Through guidance on recognition, measurement and financial statement presentation, they contribute to the understanding of how businesses can maintain continuity and comparability in financial reporting.

Key Highlights

  • International professional network
  • Focus on IFRS reporting standards
  • Guidance on interim financial reporting
  • Experience across multiple industries
  • Audit and risk advisory capabilities
  • Cross-border expertise

Services

  • Audit and assurance
  • Risk advisory
  • Business consultancy
  • Corporate finance
  • Global compliance support
  • Tax services
  • Outsourcing
  • Corporate secretarial support
  • IT consultancy
  • Forensic services

Contact Information

  • Website: www.moore-global.com
  • Email: richard.moore@moorefamilyofficegroup.com
  • LinkedIn: www.linkedin.com/company/mooreglobal
  • Instagram: www.instagram.com/moore_global
  • Address: The Cottage, 42 Berkeley Square, London, W1J 5AW

BDO

BDO provides financial reporting advisory and interim support services to organisations that need additional resources during reporting periods. Their interim support offering is closely linked to the preparation of financial statements, particularly when finance teams require assistance with year-end processes or complex accounting matters.

Internal capacity can fluctuate throughout the year, especially during audits, reporting cycles or regulatory changes. Access to specialist reporting expertise can help businesses maintain consistency in financial information and address technical issues without disrupting day-to-day operations.

Key Highlights

  • Financial reporting advisory services
  • Interim support for finance teams
  • Assistance with financial statement preparation
  • Access to technical accounting expertise
  • Support during reporting periods
  • Experience with UK and global requirements

Services

  • Interim support
  • Financial statement preparation
  • Financial reporting advisory
  • Audit readiness support
  • ESEF reporting
  • iXBRL reporting
  • Financial services advisory
  • Technical accounting assistance

Contact Information

  • Website: www.bdo.co.uk
  • LinkedIn: www.linkedin.com/company/bdo-llp
  • Instagram: www.instagram.com/bdo_uk
  • Address: 5 Temple Square, Temple Street, Liverpool, L2 5RH, United Kingdom
  • Phone: 0151 237 4500

Teneo

Teneo operates in financial advisory, restructuring and interim management, supporting organisations across a range of business situations. Their interim management services are relevant to interim reviews where companies need additional oversight, financial assessment or support during periods of change.

Business challenges such as refinancing, restructuring or operational disruption often require timely analysis and stronger governance processes. By combining executive support with financial and strategic expertise, they help organisations address immediate priorities while maintaining visibility over performance and risk.

Key Highlights

  • Financial advisory and restructuring focus
  • Interim management capabilities
  • Support during business transformation
  • Experience with complex stakeholder environments
  • Governance and risk expertise
  • Cross-functional advisory services

Services

  • Interim management
  • CRO support
  • CFO advisory
  • Financial restructuring
  • Business transformation
  • Capital advisory
  • Regulatory and risk advisory
  • Insolvency support
  • Transaction preparation
  • Project reviews

Contact Information

  • Website: www.teneo.com
  • Twitter: x.com/Teneo
  • LinkedIn: www.linkedin.com/company/teneoglobal
  • Address: The Carter Building, 11 Pilgrim Street, London, EC4V 6RN
  • Phone: +44 20 7260 2700

Conclusion

Interim reviews can serve different purposes depending on the organisation. For some businesses, they provide additional assurance over financial information during the reporting cycle. For others, they offer an opportunity to assess controls, strengthen governance arrangements or address specific challenges before year-end reporting.

The UK market includes a broad range of providers, from specialist interim management firms and finance consultancies to established audit and advisory practices. The right choice often depends on the complexity of reporting requirements, sector-specific considerations and the level of support needed at a particular stage of the business lifecycle.

As regulatory expectations continue to evolve, interim reviews are becoming an increasingly important part of financial oversight and risk management. Whether the focus is on financial reporting, compliance or operational resilience, organisations typically benefit from selecting a provider whose expertise aligns with their governance objectives and broader assurance needs.