Manchester has quietly become one of the UK’s strongest hubs for professional and financial services, so it’s no surprise that businesses here have plenty of choice when it comes to internal audit support. From large advisory networks to specialised boutique firms, the local market covers everything from routine assurance work to complex governance reviews.
The companies listed below represent a cross-section of providers operating in and around Manchester - well-established names alongside smaller practices that focus on particular sectors or business sizes. Rather than ranking a single “winner,” this overview is meant to give you a clear starting point if you’re comparing options, shortlisting partners, or simply trying to understand who is active in the region.
Acumon
Acumon is a UK firm of chartered accountants and auditors, and we provide internal audit services as part of our risk and assurance work for organisations across the country, including in Manchester. Our background is in traditional audit and advisory, but over time we have expanded into governance, risk management, and technology assurance, as many businesses now need a broader view of how controls actually function in day to day operations. We tend to work with finance leaders who want an independent look at processes, systems, and compliance obligations without turning it into a theoretical exercise.
We operate with a UK based team and draw on experience from audit, tax, technology, and consulting, which shapes how we approach internal audit engagements. Some of our staff have previously worked within government tax authorities or regulated environments, so there is familiarity with how oversight bodies think and what documentation usually matters. Alongside internal audit, we often support organisations with related areas such as governance reviews or risk assessments, especially where financial controls intersect with IT systems or operational processes.
Key Highlights:
UK chartered accountants and registered audit firm
Internal audit delivered within a wider risk and assurance framework
Experience across corporate, charity, and subsidiary structures
Team includes professionals with public sector and regulatory backgrounds
UK based staff working with organisations nationwide, including Manchester
Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
Phone: 020 8567 3451
PKF Littlejohn
PKF Littlejohn provides internal audit and controls support to organisations across the UK, including businesses with operations in Manchester, where oversight expectations have become more demanding in recent years. Their work is usually aimed at giving boards and senior management an independent view of how well risk management and control systems are actually working, not just how they look on paper. This is particularly relevant for regulated sectors or companies with complex structures.
They may step in as a full internal audit function or work alongside an existing in house team that needs extra capacity or specialist input. In some situations, they are asked to review a specific area where concerns have been raised, such as a process breakdown or compliance issue. They also run training sessions and provide practical support to those responsible for internal audit planning, which suggests they are often involved behind the scenes, not only at reporting stage.
Key Highlights:
Experience with regulated and complex organisations
Ability to act as outsourced or co-sourced internal audit
S&W works across audit and assurance, including internal reviews that help organisations understand how their financial processes and controls hold up under pressure. For companies in Manchester, especially those growing or restructuring, this kind of insight can be useful when leadership needs reassurance that systems are keeping pace with change. Their work often involves conversations with finance teams and audit committees about how reporting flows through the business.
They look not only at compliance but also at how information moves, how decisions are supported, and where weaknesses might sit in everyday operations. Senior staff tend to stay involved throughout the process, which can help keep discussions practical instead of purely technical. In addition to internal assurance activities, they also handle statutory audits and specialised reviews, for example in pensions or royalty arrangements.
Key Highlights:
Focus on assurance beyond basic compliance
Senior level involvement during engagements
Emphasis on clear communication
Experience with complex reporting environments
Work with organisations facing change
Services:
Internal assurance and audit work
Financial reporting reviews
Standards-based assurance
Royalty audit services
Pension scheme audits
Contact Information:
Website: www.swgroup.com
Twitter: x.com/S_W_Group
LinkedIn: www.linkedin.com/company/swgroupuk
Address: Northern Assurance Building, Albert Square, 9/12 Princess Street, Manchester M2 4DN
Phone: +44 161 832 6413
BDO
BDO operates as part of a large international network and supports businesses across the UK, including many in Manchester and the wider North West. Because they work with organisations at very different stages, from early growth companies to established groups, their internal audit work tends to adapt to the scale and complexity of the client. Sector knowledge also plays a role, with dedicated teams familiar with industries such as manufacturing, technology, and not for profit.
For organisations that operate across borders, their global structure can be relevant when risks or controls extend beyond one country. Internal audit services are often delivered alongside broader advisory or compliance support, so reviews can draw on specialists where needed. This can matter when dealing with technical areas or new regulatory requirements that a general finance team may not cover on its own.
Key Highlights:
Part of an international professional services network
Sector focused expertise across industries
Support for businesses of different sizes
Experience with multinational operations
UK regional presence including the North West
Services:
Internal audit and risk reviews
Business advisory support
Regulatory and compliance assistance
Private client services
Sector specific consulting
Contact Information:
Website: www.bdo.co.uk
LinkedIn: www.linkedin.com/company/bdo-llp
Instagram: www.instagram.com/bdo_uk
Address: Eden Building, Irwell Street, Salford, Manchester, M3 5EN, United Kingdom
Phone: 0161 817 7500
Grant Thornton
Grant Thornton delivers internal audit services built around a risk based approach, working with organisations across the UK including those based in Manchester. Their reviews are often tied to how businesses are changing, whether through new projects, regulatory pressure, or shifts in strategy. The aim is usually to provide an independent perspective on whether existing controls are still fit for purpose.
They can operate as a fully outsourced function or supplement an internal audit team that needs additional expertise or temporary resources. In practice, this might involve bringing in specialists to review areas such as technology risk or governance arrangements. They also carry out external assessments of internal audit functions to see how effective those programmes are and where improvements might be needed.
Sedulo is an accountancy and advisory firm with a strong presence in Manchester, where they work with a mix of local businesses and organisations with wider operations. Their internal audit work centres on helping leadership understand where key risks sit and how well those risks are controlled in everyday activity. This often leads to a structured audit plan that evolves as the business changes.
They tend to collaborate closely with senior management to identify vulnerabilities that could affect performance, compliance, or financial stability. Alongside delivering audit reviews, they also evaluate existing frameworks and offer guidance on improving internal processes. Ongoing support is available for governance or risk related questions, which suggests the relationship often continues beyond a single engagement.
Key Highlights:
Manchester based firm with UK wide work
Emphasis on identifying and managing key risks
Support for both local and international organisations
Address: The Regency Club, 62-66 Deansgate, Manchester, M3 2EN
Phone: 0333 222 4445
RPG
RPG provides internal audit and assurance services to a wide range of organisations, including those based in Manchester, where many businesses operate within regulated or stakeholder driven environments. Their work covers statutory audit requirements as well as reporting assignments that involve reviewing financial systems and internal controls. For organisations that do not maintain a separate internal audit function, these reviews can still offer insight into how processes are working and where improvements may be needed.
They serve owner managed businesses, UK subsidiaries of overseas groups, charities, and public interest entities, each of which comes with different expectations around governance and reporting. As part of their audit process, they produce management reports that comment on internal systems, compliance with procedures, and operational efficiency. This can provide boards or leadership teams with a structured overview of control effectiveness without commissioning a standalone internal audit programme.
Key Highlights:
Long established UK audit firm
Experience with public interest entities and not for profit bodies
Address: The Copper Room, Deva City Office Park, Trinity Way, Manchester, M3 7BG
Phone: 0161 608 0000
Protiviti
Protiviti delivers internal audit consulting services with a strong focus on risk, technology, and organisational change, supporting clients globally as well as businesses operating in Manchester. Their work often reflects the challenges companies face around digital transformation, cybersecurity, and regulatory pressure, where traditional audit approaches may not cover the full picture. Internal audit programmes are designed to look at both operational and technology driven risks.
They offer a range of delivery models, from fully outsourced internal audit functions to targeted support for specific projects or staffing gaps. In practice, this can include reviewing technology controls, advising on audit transformation, or helping organisations respond to fraud concerns. Their teams also work with audit committees and senior executives on longer term improvements to how internal audit operates within the business.
Key Highlights:
Global consulting firm with UK presence
Focus on technology, risk, and compliance
Flexible sourcing models for audit delivery
Support for evolving regulatory environments
Experience with digital and data driven risks
Services:
Outsourced internal audit functions
Technology and IT risk audits
Audit transformation advisory
Controls and compliance reviews
Fraud risk management support
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: Cornerblock, Quay Street, Manchester, M3 3HN, United Kingdom
Phone: +44.16.1828.6100
Forvis Mazars
Forvis Mazars offers internal audit services aimed at strengthening governance, risk management, and control processes for organisations across the UK, including those operating in Manchester. Their work often reflects the pressures companies face from regulatory change, technological developments, and evolving business models. Internal audit functions are positioned as a way to support both oversight and operational improvement.
They can assist with setting up a new internal audit function or enhancing an existing one, depending on how mature the organisation’s assurance framework already is. Their teams draw on sector specialists from across the firm, allowing reviews to cover areas such as compliance, innovation risks, or board level responsibilities. This integrated approach can be helpful for organisations dealing with complex structures or multiple lines of business.
Address: One St Peters Square, Manchester, M2 3DE, United Kingdom
Phone: + 44(0) 161 238 9200
MHA
MHA is a firm of chartered accountants with a Manchester office that advises businesses across the city on audit, tax, and broader financial matters. Their internal audit and assurance work supports organisations at different stages of growth, from smaller companies to larger operations with complex reporting needs. For many businesses, audit engagements provide insight into internal controls and financial processes alongside formal compliance requirements.
The Manchester team includes sector specialists familiar with industries such as construction, manufacturing, and leisure, which influences how reviews are conducted. Because they also provide advisory and outsourcing services, they often see how financial systems operate in practice, not only in theory. This can help identify areas where controls could be strengthened or reporting made more efficient.
Key Highlights:
Manchester based office serving local businesses
Part of an international accounting network
Sector focused advisory teams
Support for companies of varying size
Integration of audit with broader financial services
Saffery provides internal audit related support through internal controls reviews for organisations across the UK, including businesses in Manchester that need an independent look at how their control systems actually work. While not always labelled as a traditional internal audit function, these reviews serve a similar purpose - assessing whether processes, reporting systems, and governance arrangements are operating effectively and managing risk as intended.
Their teams examine and test existing controls across financial reporting, operations, and compliance areas, documenting how procedures function in practice rather than how they are supposed to work on paper. This helps management understand where weaknesses, gaps, or inefficiencies may exist. Such work is often used by organisations that either do not have a formal internal audit department or want an external perspective on specific risk areas without launching a full audit programme.
Key Highlights:
Internal audit style reviews delivered through internal controls assessments
Focus on effectiveness of risk management and governance processes
Evaluation of financial, operational, and compliance controls
Independent testing of existing procedures
Support for organisations without in house internal audit teams
Address: Trinity Court, 16 John Dalton Street, Manchester, M2 6HY
Phone: +44 (0)161 200 8383
Conclusion
Manchester has no shortage of firms offering internal audit support, but they don’t all approach it in the same way. Some operate like extensions of a finance function, others come in as independent reviewers with a broader risk perspective, and a few focus heavily on technology, compliance, or international standards. That variety can actually be useful - it means organisations can find something that fits their size, sector, and internal capabilities instead of forcing a one size solution.
In practice, choosing an internal audit partner often comes down to what kind of assurance a business really needs right now. A growing company might want structure and guidance, while a mature organisation may be looking for challenge, depth, or specialist expertise. Manchester’s position as a major commercial centre has attracted firms that cover this whole spectrum, from global networks to local practices. The list above is simply a starting point - a way to see who is active in the market and what kind of support they tend to provide before narrowing things down further.
AC
Written by the Acumon team
Acumon is an ICAEW-registered firm of chartered accountants and registered auditors
based in London, with offices in Pitstone, Aylesbury and Bournemouth. Need advice on
anything covered here? Talk to us.
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