Top Internal Audit Services Companies in Birmingham in 2026

If you’re looking for internal audit support in Birmingham, you’ll quickly notice there’s no shortage of firms – from large, internationally connected practices to smaller specialist teams that work closely with regional businesses. The right choice often depends on your organisation’s size, regulatory environment, and how hands-on you want your auditors to be.

Below is a curated list of well-known internal audit services companies operating in and around Birmingham. It’s not a ranking, and it doesn’t assume one firm fits everyone. Instead, think of it as a starting point – a way to see who’s active locally, what kind of providers are available, and where you might begin conversations based on your specific needs.

1. Acumon

Acumon is a UK firm of chartered accountants and auditors that provides internal audit services and risk assurance services to organisations across the country, including Birmingham. We work with finance teams, boards, and senior management who need an independent view of controls, governance, and operational risks. Our internal audit work typically sits within a broader risk and technology assurance offering, so it often connects with areas like compliance, cybersecurity, and financial oversight.

As a registered audit firm with UK-based staff, we support a wide range of entities – from companies and charities to subsidiaries of international groups. Internal audit engagements are usually tailored to the structure and risk profile of each organisation rather than delivered as a fixed package. Alongside audit work, we also provide accounting, tax, advisory, and business support services, which means we are often involved in different aspects of a client’s financial and operational environment.

Key Highlights:

• UK-based team of accountants, auditors, and advisors
• Registered audit firm authorised by the ICAEW
• Internal audit delivered as part of risk and technology assurance work
• Experience working with companies, charities, and group subsidiaries
• Background in accounting, tax, governance, and compliance

Services:

• Internal audit and governance reviews
• Risk management and compliance support
• IT risk and cybersecurity assurance
• External audit
• Accounting and bookkeeping
• Tax planning and compliance
• Business advisory and consulting
• Payroll and company secretarial support

Contact Information:

• Website: acumon.com
• Email: mail@acumon.com
• Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
• Phone: 020 8567 3451

2. Grant Thornton

Grant Thornton provides internal audit services to organisations across the UK, including those operating in Birmingham, with work often delivered on an outsourced, co-sourced, or staff support basis. They focus on giving boards and management an independent view of how risks are managed and whether controls are working as intended. Their teams include risk specialists and subject matter experts who can step in when internal resources are limited or when additional expertise is needed.

Their approach tends to be collaborative, adapting to the structure and maturity of each organisation. Internal audit work may cover both core processes and emerging risks, reflecting the pressures many businesses face from regulation, technology change, and shifting operating models. They also carry out external quality assessments of internal audit functions and provide interim support at different seniority levels.

Key Highlights:

• Internal audit delivered through outsource, co-source, or staff support models
• Use of risk specialists and subject matter experts
• External quality assessments of internal audit functions
• Support for organisations with complex or evolving risk environments
• Work across UK and international operations

Services:

• Risk-based internal audit
• Internal audit effectiveness reviews
• External quality assessments (EQA)
• Interim audit staffing support
• Assurance over emerging risks and controls

Contact Information:

• Website: www.grantthornton.co.uk
• LinkedIn: www.linkedin.com/company/grant-thornton-uk
• Instagram: www.instagram.com/gt_trainees
• Address: 17th Floor, 103 Colmore Row, Birmingham, B3 3AG
• Phone: +44 (0)121 212 4000

3. Protiviti

Protiviti offers internal audit consulting services to UK organisations, including those with operations in Birmingham, focusing on risk, governance, and operational controls. Their work often combines traditional audit techniques with technology-driven analysis, reflecting how modern businesses manage digital systems, data, and regulatory expectations. They support internal audit functions that need transformation, additional expertise, or full outsourcing.

They also advise audit committees and executives on how audit programmes should evolve as risks change. Engagements may include reviewing technology risks, compliance frameworks, fraud exposure, or large capital projects. In many cases, they provide specialist teams for defined projects or ongoing support, depending on what the organisation requires at the time.

Key Highlights:

• Internal audit consulting and outsourcing options
• Focus on technology, data, and emerging risks
• Support for audit transformation initiatives
• Experience with regulatory and compliance environments
• Access to specialist audit and controls expertise

Services:

• Technology and IT audit
• Internal audit programme transformation
• Controls advisory and testing
• Fraud risk management reviews
• Capital project audit support
• SOX compliance support
• Staff augmentation for audit teams

Contact Information:

• Website: www.protiviti.com
• Facebook: www.facebook.com/Protiviti
• Twitter: x.com/ProtivitiUK
• LinkedIn: www.linkedin.com/company/protiviti-uk-
• Instagram: www.instagram.com/protiviti.uk
• Address: Second Floor, AIR, 35 Homer Road, Solihull B91 3QJ, United Kingdom
• Phone: +44.12.1616. 4600

4. Bishop Fleming

Bishop Fleming delivers internal audit and risk assurance services to organisations across both public and private sectors, including clients in Birmingham and the wider Midlands. Their work ranges from focused compliance reviews of key controls to full annual internal audit plans that examine multiple operational areas. The aim is to help organisations understand where risks sit and whether existing safeguards are adequate.

They often work in regulated environments such as education, housing, healthcare, and government bodies, where formal oversight requirements are common. Engagements typically involve reviewing governance arrangements, systems, and internal processes, then providing feedback that supports decision-making and accountability. The scope is usually tailored to each organisation’s structure and regulatory obligations.

Key Highlights:

• Internal audit for public and private sector organisations
• Experience in regulated sectors such as NHS, housing, and education
• Combination of one-off reviews and annual audit programmes
• Focus on governance, risk, and control frameworks
• Support for compliance with mandated requirements

Services:

• Internal audit reviews
• Risk management assessments
• Governance evaluations
• Systems and controls assurance
• Compliance checks on key processes

Contact Information:

• Website: www.bishopfleming.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

5. S&W

S&W provides audit and assurance services that can include internal-focused reviews for organisations across the UK, including businesses operating in Birmingham. Their work looks beyond basic compliance to understand how systems, reporting structures, and processes function in practice. This often involves identifying risks, operational gaps, or areas where oversight could be strengthened.

Their teams typically engage with finance leaders, owners, or audit committees who need independent assurance about the organisation’s financial and operational position. Reviews may cover internal reporting, financial controls, or specialised areas such as pensions or intellectual property arrangements. The emphasis is on understanding the business context before carrying out detailed testing.

Key Highlights:

• Audit and assurance work covering financial and operational areas
• Engagement with senior leadership and governance bodies
• Reviews of systems, reporting, and internal processes
• Support for organisations facing change or complexity
• Use of structured audit methodologies

Services:

• Internal and non-statutory assurance reviews
• Financial reporting assurance
• Statutory audit
• Royalty and intellectual property audits
• Pension scheme audits
• Corporate reporting reviews

Contact Information:

• Website: www.swgroup.com
• Twitter: x.com/S_W_Group
• LinkedIn: www.linkedin.com/company/swgroupuk
• Address: 14th floor, 103 Colmore Row, Birmingham B3 3AG
• Phone: 0121 812 8134

6. Shareef & Co Chartered Accountants

Shareef & Co Chartered Accountants, based in Solihull near Birmingham, provides internal audit as part of a broader audit and assurance offering to local businesses, charities, and regulated organisations. Their internal audit work is built on developing an understanding of how the organisation operates, including its financial systems, objectives, and key risks. This allows them to identify weaknesses or inefficiencies in controls and processes.

They also carry out statutory audits, independent examinations, and specialist reviews when required by governing bodies or regulators. Internal audit engagements often involve reviewing financial records, operational procedures, and governance arrangements, then reporting findings to management. Their work is overseen by professional bodies, reflecting standard UK audit regulation.

Key Highlights:

• Internal audit services for businesses and charities in the Birmingham area
• Regulated audit work overseen by the ICAEW
• Risk-based audit approach
• Experience with specialist regulatory reviews
• Focus on financial systems and operational controls

Services:

• Internal audit
• Statutory audit
• Independent examinations for charities
• Due diligence reviews
• Grant assurance reports
• Forensic accounting support

Contact Information:

• Website: www.shareef.co.uk
• Email: info@shareef.co.uk
• Address: 4 Highlands Court, Cranmore Avenue, Solihull, B90 4LE
• Phone: +44 (0)121 783 5555

7. Forvis Mazars

Forvis Mazars operates from a central Birmingham office and provides audit, risk, and advisory services to organisations across the West Midlands. Their internal audit and risk assurance work is typically delivered as part of a broader governance and compliance offering, supporting businesses, financial institutions, public bodies, and large private organisations. Being part of an international network, they often work with companies that have cross-border operations or complex reporting requirements.

Their teams combine local market knowledge with national and global resources, which can be useful for organisations dealing with sector-specific regulations or expansion. Internal audit assignments usually focus on reviewing controls, risk management processes, and operational practices to help leadership understand how effectively the organisation is functioning and where attention may be needed.

Key Highlights:

• Birmingham office in the central business district
• Part of an international audit and advisory network
• Work across private, public, and financial sectors
• Integration of local expertise with global resources
• Broad risk and governance capabilities

Services:

• Internal audit and risk assurance
• External audit and assurance
• Tax compliance and advisory
• Forensic investigation and compliance
• Corporate finance and transaction support
• Accounting and outsourcing

Contact Information:

• Website: www.forvismazars.com
• Facebook: www.facebook.com/ForvisMazarsGroup
• 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

8. PKF Smith Cooper

PKF Smith Cooper provides internal audit services to businesses across the Midlands, including organisations based in Birmingham, as part of a wider audit and advisory offering. Their internal audits focus on reviewing how a company’s operations, controls, and governance processes function in practice, with the aim of identifying weaknesses and areas that may need improvement. The work is typically designed to give management and stakeholders an independent perspective on risk management and compliance.

They tailor each engagement to the organisation’s structure and objectives, recognising that different sectors face different operational risks. Internal audit findings are reported to senior leadership to support decision making and oversight. Alongside this work, they also deliver a broad range of accounting, tax, and corporate finance services, which means they often understand both the financial and operational context of the businesses they review.

Key Highlights:

• Internal audit services available to Birmingham and Midlands organisations
• Focus on risk management, governance, and operational controls
• Tailored audit scope based on business objectives
• Part of a wider audit and advisory practice
• Member of an international network

Services:

• Internal audit
• External audit
• Risk and control evaluation
• Governance reviews
• Compliance assessments
• Accounting and tax support

Contact Information:

• Website: www.pkfsmithcooper.com
• Email: birmingham@pkfsmithcooper.com
• Facebook: www.facebook.com/PKFsmithcooper
• Twitter: x.com/PKFSmithCooper
• LinkedIn: www.linkedin.com/company/pkfsmithcooper
• Instagram: www.instagram.com/pkfsmithcooper
• Address: 2 Cornwall Street, Birmingham, B3 2DX
• Phone: 0121 236 6789

9. Azets

Azets provides internal audit and risk assurance services to organisations across the UK, including businesses operating in Birmingham, with a focus on governance, controls, and strategic risk oversight. Their internal audit work is designed to give boards and senior management an independent view of how well internal systems are functioning and whether risks are being managed appropriately.

They offer flexible delivery models, which can range from fully outsourced internal audit functions to targeted reviews of specific risk areas or technical topics. Engagements typically begin with an assessment of the organisation’s objectives and risk landscape, followed by a structured audit plan and ongoing communication with leadership. The firm also provides a wide range of accounting, advisory, payroll, and tax services, allowing them to support organisations beyond assurance work.

Key Highlights:

• Internal audit aligned with organisational risk profiles
• Flexible delivery – outsourced, co-sourced, or project-based
• Focus on governance and oversight effectiveness
• National presence with local expertise
• Work performed to recognised professional standards

Services:

• Internal audit and risk assurance
• Strategic risk assessments
• Compliance and control reviews
• Specialist technical audits
• External audit
• Accounting, payroll, and tax support

Contact Information:

• Website: www.azets.com
• LinkedIn: www.linkedin.com/company/azets
• Instagram: www.instagram.com/azets_uk
• Address: 6th Floor, Bank House, Cherry St, B2 5AL
• Phone: 0121 374 0180

10. Sedulo

Sedulo provides internal audit services to organisations across the UK, including those with operations in Birmingham, with an emphasis on strengthening internal controls and managing risk. Their approach involves working closely with senior management to identify key operational and financial risks, then building an audit programme that addresses those areas over time. This can include both one-off reviews and ongoing audit plans.

They also assist organisations in developing internal audit frameworks and strategies where these do not yet exist or need improvement. Support may extend to training, advisory input, or responding to specific governance questions as they arise. The firm operates under UK professional oversight and serves both larger corporate groups and smaller businesses.

Key Highlights:

• Bespoke internal audit programmes
• Focus on risk identification and control effectiveness
• Support for developing audit frameworks and strategies
• External quality assessments of audit arrangements
• Services delivered across multiple UK locations

Services:

• Internal audit planning and delivery
• Risk management reviews
• Governance assessments
• Internal control evaluations
• Audit methodology advice and training
• Ad hoc audit and risk support

Contact Information:

• Website: sedulo.co.uk
• Email: hello@sedulo.co.uk
• Facebook: www.facebook.com/SeduloGroup
• Twitter: x.com/sedulo_group
• LinkedIn: www.linkedin.com/company/394902
• Instagram: www.instagram.com/sedulogroup
• Address: The Metro Club, 73 Cornwall Street, Birmingham, B3 2DF
• Phone: 0333 222 4445

11. Fraser Russell

Fraser Russell is a Birmingham-based professional services firm offering audit and assurance as part of its advisory and tax work. Their services include internal-focused assurance reviews that examine financial systems, compliance processes, and organisational controls. Being locally based, they work with businesses in Birmingham and the surrounding area across different stages of development.

The firm provides a mix of compliance and advisory support, helping organisations meet regulatory requirements while maintaining oversight of their operations. Internal assurance work often sits alongside tax, business support, and startup advisory services, giving them a broader view of how businesses operate day to day.

Key Highlights:

• Birmingham-based audit and advisory firm
• Internal assurance as part of wider audit services
• Support for local businesses and startups
• Professional affiliations with recognised accounting bodies
• Combination of compliance and advisory work

Services:

• Audit and assurance
• Internal control reviews
• Compliance support
• Business taxation
• Startup advisory
• General accounting services

Contact Information:

• Website: www.fraserrussell.com
• Email: solutions@fraserrussell.com
• Address: 77 Francis Road, Edgbaston, Birmingham B16 8SP
• Phone: 0121 647 5030

12. Veritau

Veritau provides internal audit services primarily to public sector organisations, including councils, schools, and public bodies operating in Birmingham. Their work focuses on assessing risks, reviewing governance arrangements, and evaluating whether systems and processes are performing as intended. As an organisation owned by local authorities, they operate with a strong understanding of public sector requirements and constraints.

Internal audits often examine financial systems, project management, operational performance, and value for money considerations. They also provide ongoing advice and support to help organisations implement improvements. Engagements are tailored to each client, with attention given to minimising disruption to day-to-day services.

Key Highlights:

• Focus on public sector organisations
• Experience with councils, schools, and public bodies
• Independent assurance on governance and risk management
• Professionally qualified audit staff
• Services delivered across multiple public sector areas

Services:

• Internal audit reviews
• Financial system audits
• Operational and performance reviews
• IT risk assurance
• Value for money assessments
• Grant certification support
• Governance and policy reviews

Contact Information:

• Website: veritau.co.uk
• Email: enquiries@veritau.co.uk
• Facebook: www.facebook.com/www.veritau.co.uk
• LinkedIn: www.linkedin.com/company/veritau
• Instagram: www.instagram.com/veritaultd
• Address: West Offices, Station Rise, York, YO1 6GA
• Phone: 01904 552943

13. BDO

BDO provides internal audit and advisory services to organisations in Birmingham and across the West Midlands through its regional office. Their teams support businesses at different stages of growth, from smaller companies to large international groups, offering assurance over risk management, controls, and governance arrangements. Being part of an international network allows them to work with organisations that operate across multiple jurisdictions.

Internal audit work is often integrated with broader advisory and assurance services, reflecting the complex environments many businesses face. Their sector specialists cover industries such as manufacturing, technology, consumer markets, and not-for-profit, which is particularly relevant in the Midlands region.

Key Highlights:

• Internal audit services for Birmingham and West Midlands organisations
• Support for businesses from startups to large groups
• Sector-focused expertise across key regional industries
• Access to international network resources
• Combination of audit, tax, and advisory capabilities

Services:

• Internal audit
• Risk and governance assurance
• Compliance reviews
• External audit
• Business advisory
• Private client services

Contact Information:

• Website: www.bdo.co.uk
• LinkedIn: www.linkedin.com/company/bdo-llp
• Instagram: www.instagram.com/bdo_uk
• Address: Two Snowhill, Birmingham, B4 6GA, United Kingdom
• Phone: 0121 352 6200

Conclusion

Birmingham has a wide mix of internal audit providers, and that variety is actually useful. Some firms focus on large, complex organisations, others work more closely with local businesses, charities, or public sector bodies. There are also differences in style – some operate as full outsourcing partners, while others step in for specific reviews or short-term support. In practice, the right choice usually comes down to how much independence you need, how regulated your environment is, and whether you want a long-term relationship or a one-off piece of work.

What stands out is that internal audit today is less about ticking boxes and more about understanding how an organisation really functions day to day. A good audit team should be able to challenge assumptions without getting in the way, and offer insight that management can actually use. The firms listed above give a snapshot of what’s available around Birmingham, from global consultancies to regional practices. For most organisations, the next step is simply to speak with a few providers, compare approaches, and see which one feels aligned with how you operate.