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Top Internal Audit Services Companies in Bristol for Growing and Established Businesses

Running a business in Bristol comes with its own rhythm. It is a city that mixes long established industries with fast growing startups, and that blend creates both opportunity and risk. At some point, most organisations realise they need someone to step back, look at the numbers, review the processes, and quietly ask the uncomfortable […]

Running a business in Bristol comes with its own rhythm. It is a city that mixes long established industries with fast growing startups, and that blend creates both opportunity and risk. At some point, most organisations realise they need someone to step back, look at the numbers, review the processes, and quietly ask the uncomfortable but necessary questions. That is where internal audit teams come in.

In this article, we are going to put together a list of internal audit services companies in Bristol and look at what they actually do in practice. Not just the textbook definition, but the real day to day value they bring – from tightening up controls to spotting gaps before they turn into expensive problems. If you are considering external support for internal audit, this should give you a clearer starting point.

1. Acumon

At Acumon, we are a UK based firm of chartered accountants, auditors and advisors, and internal audit sits within our Risk and Tech Assurance work. In practice, that means we look at governance, internal controls, risk management and technology risks with a clear and structured approach. Alongside statutory audit, tax and accounts, we support finance teams and directors who want a more organised view of how their systems and processes are holding up. Internal audit is not treated as a box ticking task, but as part of a wider framework that covers compliance, IT risk, cybersecurity and overall control.

Although we were founded in London, we work with businesses across the UK, including organisations in Bristol and the wider South West. Much of our work is delivered remotely, with UK based staff who are used to supporting finance teams in different regions. For Bristol companies that need independent internal audit support without building a full in house function, we step in to review controls, assess risk exposure and provide practical recommendations that fit the size and structure of the business.

Key Highlights:

  • UK based team of accountants, auditors and advisors
  • Registered audit firm
  • Risk and Tech Assurance offering including internal audit
  • Experience supporting CFOs and Finance Directors
  • Services covering governance, compliance and IT risk

Services:

  • Internal audit
  • Risk management
  • IT risk and cybersecurity review
  • Governance and compliance support
  • External audit
  • Accounts and tax services

Contact information:

2. Albert Goodman

Albert Goodman is an accountancy and advisory firm with a long history in the South West. Their work covers audit, accountancy, corporate finance, payroll, tax and financial planning. Audit and assurance form a central part of their business offering, supporting companies, charities and sector specific organisations with structured financial oversight. Internal audit needs are typically addressed as part of their wider audit and advisory services, especially for organisations that require clearer processes and stronger financial control.

With an office in Bristol, they are directly present in the city and work with local SMEs, charities, healthcare providers and other regional sectors. For Bristol based organisations, this means access to audit and assurance services from a team that understands the local business landscape. When internal audit support is required, it is often delivered alongside ongoing audit or advisory work, helping management teams review systems, strengthen oversight and deal with regulatory expectations in a straightforward way.

Key Highlights:

  • Established presence in the South West
  • Office located in Bristol
  • Sector focused expertise including charities and healthcare
  • Audit and assurance as part of core business services
  • Support for both business and personal financial matters

Services:

  • Audit and assurance
  • Accountancy services
  • Business tax and VAT advice
  • Payroll services
  • Corporate finance
  • Business recovery and insolvency

Contact information:

  • Website: albertgoodman.co.uk
  • Phone: 0117 962 3100
  • E-mail: enquiries@albertgoodman.co.uk
  • Address: 5th Floor, 25 King Street, Bristol BS1 4PB
  • Facebook: www.facebook.com/AlbertGoodmanLLP
  • Twitter: x.com/AG_LLP
  • LinkedIn: www.linkedin.com/company/albertgoodman
  • Instagram: www.instagram.com/albert_goodman

3. BDO LLP

BDO Bristol is part of a national and international network, delivering audit, tax and advisory services across the South West. Their Bristol office works with a wide range of clients, from private individuals and start ups to mid market and listed companies. Audit is described as robust, transparent and independent, forming a key part of their regional offering. Internal audit support is generally provided within this broader assurance and risk framework, particularly for larger or more complex organisations.

Based at Finzels Reach in Bristol, the office serves businesses across the region, including Swindon, Cheltenham, Exeter, Plymouth and South Wales. For companies in Bristol that require a more structured internal audit function, especially those operating across multiple locations or sectors, BDO can draw on national expertise while maintaining a local presence. Their work often links internal audit to sector knowledge, including professional services, technology and manufacturing.

Key Highlights:

  • Bristol office with regional coverage
  • Part of a UK wide and international network
  • Experience with mid market and listed companies
  • Sector focus including technology and manufacturing
  • Independent audit and assurance services

Services:

  • Audit and assurance
  • Internal audit support
  • Tax advisory
  • Business advisory
  • Sector specific advisory services

Contact information:

  • Website: www.bdo.co.uk
  • Phone: 0117 930 1500
  • Address: Bridgewater House, Finzels Reach, Counterslip, Bristol, BS1 6BX, United Kingdom
  • LinkedIn: www.linkedin.com/company/bdo-llp
  • Instagram: www.instagram.com/bdo_uk

4. Grant Thornton UK

Grant Thornton UK provides internal audit services as part of its wider business risk advisory work. Their approach is built around risk based internal audit, independent assurance and access to subject matter specialists when needed. They work with organisations that want clearer oversight of controls, emerging risks and regulatory expectations. Internal audit can be delivered on a co source, outsource or staff support basis, depending on what the business requires at the time. They also carry out external quality assessments and support heads of internal audit who need additional resource or technical input.

While their internal audit leadership team is based in London, Grant Thornton operates across the UK, including the South West. Businesses in Bristol can access their internal audit support as part of their national advisory services. For organisations in the city dealing with growth, regulatory change or more complex assurance needs, they provide structured internal audit programmes that link risk management to day to day operations and board level reporting.

Key Highlights:

  • Risk based internal audit approach
  • Co source, outsource and staff loan options
  • Access to subject matter experts
  • External quality assessments
  • Support for heads of internal audit

Services:

  • Internal audit
  • External quality assessments
  • Risk and control reviews
  • Technology risk input
  • Financial services internal audit support
  • Advisory and business risk services

Contact information:

  • Website: www.grantthornton.co.uk
  • Phone: +44 (0)11 7305 7600                     
  • Address: 2 Glass Wharf, Bristol BS2 0EL
  • LinkedIn: www.linkedin.com/company/grant-thornton-uk
  • Instagram: www.instagram.com/gt_trainees

5. Milsted Langdon

Milsted Langdon delivers audit and assurance services to businesses and organisations of different sizes. Their audit work is positioned as more than a regulatory requirement, with a focus on financial clarity, internal controls and practical recommendations. They design audit programmes around the structure and sector of each organisation, aiming to minimise disruption while reviewing systems and reporting. Assurance work is supported by technology and a structured methodology, with input on governance and operational processes where needed.

With offices in Bristol as well as other South West locations, Milsted Langdon works directly with businesses in the city. For Bristol organisations looking at internal audit style reviews within their broader audit and assurance arrangements, the firm provides oversight of financial reporting and internal controls. Their local presence makes it easier for management teams to engage regularly, whether for statutory audit, governance reviews or ongoing advisory support.

Key Highlights:

  • Offices including Bristol
  • Audit and assurance for businesses of different sizes
  • Risk focused audit programmes
  • Membership of MGI Worldwide
  • Support with cross border audit assignments

Services:

  • Audit and assurance
  • Internal control review
  • Business tax
  • Corporate finance
  • Forensic accounting
  • Payroll and workplace pensions

Contact information:

  • Website: www.milstedlangdon.co.uk
  • Phone:  0117 945 2500 
  • E-mail: advice@milstedlangdon.co.uk
  • Address: Freshford House, Redcliffe Way, Redcliffe, Bristol BS1 6NL
  • LinkedIn: www.linkedin.com/company/milsted-langdon-llp
  • Instagram: www.instagram.com/milstedlangdon

6. Godfrey Wilson

Godfrey Wilson is a Bristol based firm of accountants and auditors, known for its work with charities as well as commercial clients. They provide audit, accounts, payroll and tax services, with a focus on clear communication and practical advice. Their audit work supports organisations that need independent review of financial reporting and governance. Although they are often described as charity specialists, they also act for a range of other clients who want straightforward, reliable audit and accounting support.

Based in central Bristol, they work closely with local charities and businesses. For organisations in the city that need audit services with a more personal approach, Godfrey Wilson provides statutory audit and independent examination, along with related accounting services. Their work often touches on internal controls and governance as part of the wider audit process, which can support boards and trustees in understanding how their systems are working in practice.

Key Highlights:

  • Bristol based firm
  • Strong focus on charity clients
  • Audit and independent examination services
  • Clear and direct communication style
  • Ethical and environmental principles

Services:

  • Audit
  • Independent examination
  • Accounts preparation
  • Payroll
  • Tax services
  • Accounting software support

Contact information:

  • Website: www.godfreywilson.co.uk
  • Phone:  0117 971 3445
  • E-mail: hello@godfreywilson.co.uk
  • Address: 5th Floor, Mariner House, 62 Prince Street, Bristol, BS1 4QD
  • Twitter: x.com/Godfrey_Wilson
  • Linkedin: www.linkedin.com/company/godfrey-wilson-limited

7. Bishop Fleming

Bishop Fleming provides audit services that include internal audit and risk assurance alongside external audit and financial reporting. Their work is aimed at helping organisations understand their financial position and internal controls in a clear and structured way. Internal audit is positioned as part of a wider assurance framework, covering risk, governance and compliance across different sectors such as corporates, charities, academy trusts and public bodies. They also offer specialist audit services, including grant audits and pension scheme audits.

With an office in Bristol, they work directly with organisations across the city and the wider South West. For Bristol based businesses and public sector bodies that need internal audit support, Bishop Fleming’s local team can review controls, identify risks and provide independent oversight as part of ongoing assurance work. Their regional presence means they are familiar with the local business environment while operating as part of a wider UK audit network.

Key Highlights:

  • Bristol office as part of a UK wide firm
  • Internal audit and risk assurance offering
  • External audit and financial reporting services
  • Specialist audit services including grant and pension audits
  • Sector experience across corporates, charities and public bodies

Services:

  • Internal audit and risk assurance
  • External audit
  • Financial reporting
  • Grant audits
  • Pension scheme audits
  • Forensic accounting services

Contact information:

  • Website: www.bishopflemingaudit.co.uk
  • Phone: 0117 9100250
  • Address: 10 Temple Back, Bristol BS1 6FL
  • Facebook: www.facebook.com/people/Life-at-Bishop-Fleming
  • Twitter: x.com/BishopFlemingUK
  • LinkedIn: www.linkedin.com/company/bishop-fleming-chartered-accountants
  • Instagram: www.instagram.com/bishopfleminguk

8. Azets 

Azets Bristol offers audit and assurance as part of a broader range of accountancy, tax and advisory services. Their audit work focuses on financial accuracy, compliance and reporting for businesses operating in different sectors. Internal controls and assurance are addressed within their audit and advisory support, particularly for growing SMEs and larger organisations that need structured financial oversight. Alongside audit, they provide business advisory, corporate finance and tax services.

Based at Temple Back East in Bristol, their team works with companies across sectors such as technology, engineering, healthcare and property. For organisations in Bristol that require audit and assurance support, Azets provides local access to professionals who understand the regional market. Internal audit style reviews are typically delivered as part of wider audit and advisory engagements, supporting management teams in maintaining compliance and reviewing financial processes.

Key Highlights:

  • Bristol office serving the South West
  • Audit and assurance as part of core services
  • Sector coverage including technology and manufacturing
  • Advisory and corporate finance support
  • Payroll and tax services

Services:

  • Audit and assurance
  • Accounting services
  • Tax advisory
  • Corporate finance
  • Payroll services
  • Restructuring and insolvency support

Contact information:

  • Website: www.azets.com
  • Phone: 0117 405 9790
  • Address: One Temple Quay, Temple Back East, BS1 6DZ
  • LinkedIn: www.linkedin.com/company/azets
  • Instagram: www.instagram.com/azets_uk

9. Forvis Mazars 

Forvis Mazars provides audit and assurance services as part of a global professional services network. Their audit work sits alongside tax, advisory and consulting services, supporting organisations across sectors such as financial services, manufacturing, technology and the public sector. Internal audit and assurance are delivered within this broader audit framework, offering independent review of financial reporting and internal controls.

Through their UK offices, including Bristol, they support organisations that operate locally, nationally and internationally. For Bristol based companies that require audit and assurance input, Forvis Mazars combines local engagement with access to a wider network of specialists. Internal audit related work is often linked to governance, compliance and sector specific regulatory requirements.

Key Highlights:

  • Bristol office within a global network
  • Audit and assurance services
  • Sector coverage across public and private sectors
  • Integration with tax and advisory services
  • International reach

Services:

  • Audit and assurance
  • Accounting and outsourcing
  • Tax services
  • Advisory and consulting
  • Financial advisory
  • Sustainability and ESG support

Contact information:

  • Website: www.forvismazars.com
  • Phone: +44 (0) 117 928 1700
  • Address: 8th Floor, Assembly C, Cheese Lane, Bristol, BS2 0JJ, United Kingdom
  • Twitter: x.com/ForvisMazarsUK
  • LinkedIn: www.linkedin.com/company/forvis-mazars-in-the-uk
  • Instagram: www.instagram.com/forvismazarsuk

10. TC Group 

TC Group East Bristol provides accountancy, tax, audit and advisory services to businesses and individuals. Their work covers accounts preparation, tax planning, audit and wider business advice, with a focus on supporting owner managed businesses and personal financial matters. Audit services sit within a broader offering that includes property services and succession planning. For organisations that require structured financial oversight, their team supports compliance and reporting alongside ongoing advisory input.

Based in East Bristol, they work with businesses across the city and surrounding areas. For companies looking at audit and internal control reviews as part of their wider financial management, TC Group’s local office provides direct access to partners and advisers. Internal audit is not presented as a standalone niche, but elements of control review and assurance are addressed through their audit and business advisory services.

Key Highlights:

  • East Bristol office
  • Audit and accountancy services for businesses
  • Support for owner managed businesses
  • Tax planning and personal financial advice
  • Business advisory and succession planning

Services:

  • Audit
  • Accounts and tax services
  • Business advisory
  • Property services
  • Succession planning
  • Personal tax planning

Contact information:

  • Website: www.tc-group.com
  • Phone: 01179 561067
  • E-mail: enquiries@tc-group.com
  • Address: 30-31 St James Pl, Bristol, BS16 9JB
  • LinkedIn: www.linkedin.com/company/tc-group3
  • Instagram: www.instagram.com/tcgroupuk

11. RSM

RSM delivers internal audits as part of its wider risk advisory services. Their internal audit work focuses on evaluating control environments, governance structures and operational risks. They work with management teams to review how strategy links to risk and performance, and where needed, support improvements in internal controls. Internal audit can also involve advice on fraud prevention, regulatory compliance and information systems assurance.

Through their international network and UK presence, RSM supports organisations that operate across different sectors and regions. For Bristol based businesses seeking structured internal audit support, they provide access to experienced risk advisory professionals. Internal audit engagements are often linked to wider governance, compliance and risk management frameworks rather than treated as a separate compliance exercise.

Key Highlights:

  • Internal audit within risk advisory services
  • Focus on governance and control environments
  • Support with operational and regulatory risk
  • International network presence
  • Integration with fraud and compliance advisory

Services:

  • Internal audit
  • Risk advisory
  • Fraud prevention and investigation
  • Anti money laundering services
  • Information systems assurance
  • Governance and compliance support

Contact information:

  • Website: www.rsm.global
  • Phone: +44 (0)117 945 2000             
  • Address: 2nd Floor, 1 The Square, Temple Quay, Bristol BS1 6DG
  • Facebook: www.facebook.com/GlobalRSM
  • Twitter: x.com/RSM_Global
  • LinkedIn: www.linkedin.com/company/rsm-uk
  • Instagram: www.instagram.com/rsm.uk

12. Saffery

Saffery is a firm of chartered accountants providing audit, tax and business advice to companies, partnerships, individuals and not for profit organisations. Their work covers audit and assurance alongside tax planning and wider business support. Internal controls and governance are addressed through their audit services, particularly for organisations that need structured oversight and clear financial reporting. They are partner led and work across a range of sectors, including owner managed businesses and charities.

Although Saffery operates across the UK through a network of offices, their services are available to organisations in Bristol and the wider South West. For Bristol based companies looking for audit support that includes a review of internal controls, they provide assurance within a broader audit framework. Their connection to an international network also allows them to support clients with cross border interests while maintaining a UK focus.

Key Highlights:

  • Chartered accountants providing audit and tax services
  • Partner led structure
  • Work with businesses and not for profit organisations
  • Member of an international network
  • Sector focused experience

Services:

  • Audit and assurance
  • Tax advisory
  • Business advice
  • Financial reporting
  • Support for not for profit organisations

Contact information:

  • Website: www.saffery.com
  • Phone: +44 (0)117 915 1617                                 
  • E-mail: info@saffery.com
  • Address: St Catherine’s Court, Berkeley Place, Clifton, Bristol BS8 1BQ, UK
  • LinkedIn: www.linkedin.com/company/saffery
  • Instagram: www.instagram.com/saffery_uk

13. S&W Bristol

S&W Bristol operates from the city’s financial district and provides audit, accountancy, tax and advisory services to a wide range of clients. Their audit and assurance work focuses on financial reporting, governance and controls. Internal control review is often integrated into broader audit engagements, with additional support available through their risk advisory services. They work with corporates, SMEs, entrepreneurs and not for profit organisations.

Based on Victoria Street in Bristol, their office supports local businesses as well as organisations with national and international links. For companies in Bristol seeking internal audit style oversight or risk advisory input, S&W offers services that connect audit, governance and regulatory compliance. Their Bristol team forms part of a wider national structure, giving access to specialist input when required.

Key Highlights:

  • Bristol office in the city’s financial district
  • Audit and assurance services
  • Risk advisory and governance support
  • Work with SMEs, corporates and not for profit organisations
  • National coverage with local presence

Services:

  • Audit and assurance
  • Accounting advisory
  • Risk advisory services
  • Business tax services
  • Corporate finance
  • Forensic services

Contact information:

  • Website: www.swgroup.com
  • Phone: +44 117 233 2200
  • Address: EQ Building, 111 Victoria Street, Bristol BS1 6AX
  • Twitter: x.com/S_W_Group
  • LinkedIn: www.linkedin.com/company/swgroupuk

Conclusion

If there is one thing that stands out about internal audit services companies in Bristol, it is the range. Some firms approach internal audit through a traditional audit and assurance lens. Others position it within risk advisory or governance support. A few blend it quietly into wider accountancy services. It really depends on what kind of oversight a business is looking for.

For some organisations, internal audit is about regulatory comfort and board level assurance. For others, it is more practical – checking that systems actually work, controls are sensible, and risks are not being ignored. Bristol has firms that can support both ends of that spectrum, from local offices with close client relationships to larger networks with specialist teams behind them.

In the end, choosing the right provider is less about brand names and more about fit. Does the firm understand your sector? Do they speak in plain terms? Can they adapt to how your organisation actually operates? Internal audit works best when it feels relevant rather than imposed, and the companies based in Bristol offer different ways to approach that.