Due Diligence Services Companies in Liverpool: Firms and Selection Guide

Due diligence plays a critical role in reducing uncertainty around acquisitions, investments and commercial transactions. Beyond reviewing financial information, the process often helps organisations identify operational risks, compliance concerns, governance weaknesses and issues that could affect long-term value.

Liverpool is home to a range of firms providing due diligence support, from established accountancy practices and corporate finance advisors to specialist risk and transaction consultancies. Different providers bring different strengths depending on the size, complexity and sector profile of the transaction.

This guide highlights a selection of due diligence services companies operating in Liverpool and the surrounding region. The aim is not to rank providers, but to offer practical context around the firms active in the market, the services they provide and the types of organisations they typically support.

Acumon

Acumon is a UK firm of chartered accountants and advisors providing due diligence services to companies, investors and corporate groups across Liverpool and the wider UK market.

The firm supports organisations involved in acquisitions, disposals, restructurings and investment activity, ranging from owner-managed businesses through to larger corporate and international group structures. Due diligence engagements are designed to help clients assess financial performance, identify commercial and operational risks, and evaluate the reporting and governance position of a target business prior to transaction completion.

Acumon provides financial, tax and commercial due diligence services across a range of industries and transaction environments. Work is structured around the specific objectives of each transaction, including funding requirements, acquisition strategy, restructuring activity and post-transaction planning considerations.

Alongside its UK statutory audit registration, the firm also maintains audit licences in the Cayman Islands, British Virgin Islands (BVI), Jersey and Isle of Man. These registrations support transactions involving offshore entities, international investments and cross-border reporting obligations.

Corporate transactions often involve coordination between investors, lenders, boards, finance teams and legal advisers across multiple entities and jurisdictions. Acumon supports organisations throughout the transaction process by providing reporting analysis, financial insight and risk assessment designed to support informed commercial decision-making.

Due Diligence Capabilities

Acumon supports due diligence engagements across a broad range of transaction types, corporate structures and reporting environments.

These include:

• UK limited companies and corporate groups
• business acquisitions and disposals
• management buy-outs and buy-ins (MBO/MBI)
• corporate restructurings and demergers
• investment and funding transactions
• cross-border and international group structures
• owner-managed businesses and corporate groups

Senior-led teams remain closely involved throughout the engagement, supporting communication, analysis and transaction oversight from initial review through to completion.

Regulatory Licences and Registrations

The firm maintains a range of audit registrations and regulatory authorisations supporting work across both UK and international 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 support projects involving cross-border operations, offshore entities and multi-jurisdictional corporate structures.

Core Services

In addition to transaction support, Acumon provides a wider range of services focused on reporting, governance and compliance oversight.

These include:

• statutory external audit
• group and subsidiary audits
• Public Interest Entity (PIE) audits
• charity and not-for-profit audit
• financial reporting and governance support
• financial and tax due diligence
• internal audit and governance reviews
• risk management and compliance support
• business advisory and transaction support

Transaction engagements often involve reviewing reporting reliability, operational performance, commercial assumptions and areas of financial or regulatory exposure.

As organisations expand, restructure or pursue investment opportunities, the complexity of financial reporting, governance and transaction oversight can increase significantly.

Acumon works with businesses that are:

• acquiring or disposing of businesses
• preparing for investment or funding activity
• operating through group or holding company structures
• reviewing financial and operational risks
• managing cross-border transactions and reporting requirements

Early-stage due diligence support can help organisations evaluate transaction risks, improve decision-making visibility and strengthen planning throughout the investment or acquisition process.

Contact Information:

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

RSM UK

RSM UK describes its due diligence work through a regulatory and risk-focused lens, particularly in areas connected to financial services and compliance oversight. Their reviews examine how businesses manage governance responsibilities, regulatory obligations and internal control environments before a transaction or investment moves forward. The firm places noticeable attention on operational structures, compliance frameworks and the way risk management functions operate in practice.

Their approach to regulatory due diligence appears closely linked to broader assurance and risk advisory services. Assessments may cover governance arrangements, oversight models, technology systems, third-party monitoring and organisational culture, alongside the resources and expertise available within a target business. This gives buyers and investors a wider view of how regulatory exposure could affect ongoing operations after completion of a deal.

Key Highlights:

• Focus on regulatory due diligence within financial services
• Reviews linked to governance, compliance and risk oversight
• Assessment of control frameworks and compliance structures
• Experience covering regulatory risk and operational controls
• Internal audit and risk assurance capabilities
• Part of an international audit, tax and consulting network

Services:

• Regulatory due diligence
• Financial services risk and regulation
• Internal audit and controls
• Risk assurance
• Governance and compliance reviews
• Control framework assessments
• Technology and systems oversight reviews

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

EY

EY presents due diligence as part of a wider transaction and corporate finance offering covering multiple areas of business risk and performance. Their work spans financial, operational, tax, commercial and technology due diligence, alongside newer areas such as AI, sustainability and cyber risk. The focus is not limited to reviewing historical figures, but also understanding how a business operates, scales and manages long-term commercial pressures.

Across transactions, their teams examine factors that may influence deal value, integration planning and future strategy. The scope of review can include operational structures, workforce considerations, product capability, digital infrastructure and transaction tax exposure. Their due diligence services sit within a broader advisory environment connected to M&A, strategy and corporate transformation projects.

Key Highlights:

• Multi-disciplinary due diligence coverage across transactions
• Financial, operational, commercial and technology reviews
• Involvement in M&A and corporate finance advisory
• Focus on risk identification and value analysis
• Cybersecurity, AI and sustainability due diligence capabilities
• International transaction advisory network

Services:

• Financial due diligence
• Commercial due diligence
• Operational due diligence
• Tax due diligence
• IT due diligence
• Cybersecurity due diligence
• Human resources due diligence
• Sustainability due diligence
• AI due diligence
• Product and technology due diligence
• Transaction tax advisory

Contact Information:

• Website: www.ey.com
• Facebook: www.facebook.com/pages/Ernst-Young/195665063800329
• Twitter: x.com/EYnews
• LinkedIn: www.linkedin.com/company/1073
• Address: 3rd Floor, Edward Pavilion, Royal Albert Dock, Liverpool L3 4AF
• Phone: +44 117 981 2050

BDO

BDO approaches due diligence through a transaction advisory model that supports businesses during acquisitions, disposals, fundraising activity and market transactions. Their work covers financial, operational and commercial analysis, helping organisations understand how a target business performs across different areas of risk, profitability and operational structure. The firm also places emphasis on how due diligence findings connect to deal value and transaction planning.

The scope of review varies depending on the transaction itself. Some projects focus on earnings quality and financial reporting, while others look more closely at technology infrastructure, ESG exposure, operational efficiency or post-transaction integration risks. Alongside due diligence work, BDO includes supporting advisory services connected to valuations, transaction structuring and sale and purchase agreement matters.

Key Highlights:

• Transaction-focused due diligence support
• Experience across acquisitions, fundraising and M&A activity
• Mid-market and corporate transaction advisory work
• Coverage of operational, ESG and technology risks
• Financial and tax due diligence capabilities
• Additional valuation and transaction support services

Services:

• Financial due diligence
• Commercial due diligence
• ESG due diligence
• IT due diligence
• Operational due diligence
• Tax due diligence and structuring
• Post-transaction review support
• Valuation advisory
• Sale and Purchase Agreement support
• Bid support and defence
• Transaction structuring advisory

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

Grant Thornton

Grant Thornton’s due diligence work in this area is closely connected to sell-side transactions and vendor due diligence projects. Their process is designed to help businesses prepare for a sale by identifying issues that could affect value, investor confidence or deal timelines before discussions progress too far. The firm places noticeable emphasis on keeping management teams informed and reducing disruption during the transaction process.

Part of their work involves presenting financial and operational information in a way that gives potential investors clearer visibility over the business. Reviews may uncover areas requiring further explanation, remediation or restructuring before a transaction completes. Their due diligence offering also draws on wider advisory input when needed, including support from sector specialists and international teams involved in cross-border transactions.

Key Highlights:

• Focus on vendor due diligence and sell-side transactions
• Reviews aimed at identifying value-impacting issues early
• Support during business sale and investment processes
• Integrated transaction advisory approach
• Access to sector specialists and international network resources
• Experience working alongside management teams and external advisers

Services:

• Vendor due diligence
• Sell-side advisory
• Transaction advisory services
• Business sale support
• Investor reporting and analysis
• Deal process support
• Risk and issue identification
• Cross-border transaction support

Contact Information:

• Website: www.grantthornton.co.uk
• LinkedIn: www.linkedin.com/company/grant-thornton-uk
• Instagram: www.instagram.com/gt_trainees
• Address: Royal Liver Building, Liverpool, L3 1PS 
• Phone: +44 (0)151 224 7200

FRP Advisory

FRP Advisory approaches due diligence from a lender and financial advisory perspective, supporting institutions and stakeholders involved in financing decisions, restructuring situations and acquisition activity. Their reviews focus heavily on financial performance, debt capacity, covenant exposure and cashflow resilience, particularly where lenders require a clearer understanding of commercial risk before providing funding.

Their lender due diligence work is supported by broader business review and restructuring capabilities. In practice, this can involve analysing financial forecasts, assessing downside risks and reviewing operational pressures that may affect a borrower’s ability to meet obligations over time. The firm also carries out independent business reviews and cashflow analysis where transactions involve stressed or changing financial conditions.

Key Highlights:

• Due diligence support connected to lender and financing decisions
• Focus on financial performance and cashflow analysis
• Independent business review capabilities
• Risk assessment linked to lending and debt structures
• Experience across restructuring and advisory environments
• Transaction and financial advisory support

Services:

• Lender due diligence
• Independent business reviews
• Cashflow management and stabilisation
• Financial advisory
• Transaction services
• Financial modelling
• Governance advisory
• Board and C-suite advisory
• Valuation services
• ESG advisory

Contact Information:

• Website: www.frpadvisory.com
• Email: contactus@frpadvisory.com
• Address: Edward Pavilion, Albert Dock, Liverpool L3 4AF
• Phone: +44 (0)20 3005 4000

Opus Business Advisory Group

Opus Business Advisory Group operates across forensic accounting, advisory and financial investigation services, with a presence in Liverpool alongside offices across the UK and internationally. Their positioning within the market is more closely associated with forensic and financial review work, which can intersect with due diligence activity during disputes, transactions and regulatory matters.

Given the firm’s forensic accounting background, assignments may involve detailed examination of financial information, governance concerns or investigative review processes linked to transactions and commercial risk exposure. Their structure also suggests experience working alongside legal teams, regulators and financial stakeholders where independent financial analysis is required.

Key Highlights:

• Presence in Liverpool and wider UK advisory network
• Background in forensic accounting and financial investigations
• Regulated by the Financial Conduct Authority
• Experience connected to governance and dispute-related matters
• UK and international office network
• Involvement in specialist financial review work

Services:

• Forensic accounting
• Financial investigations
• Governance advisory support
• Regulatory review work
• Commercial financial analysis
• Transaction-related financial reviews

Contact Information:

• Website: opusllp.com
• Email: liverpoolenquiry@opusllp.com
• Facebook: www.facebook.com/opusbusinessadvisorygroup
• Twitter: x.com/opus_llp
• LinkedIn: www.linkedin.com/company/opus-advisory-group-uk
• Address: Fifth Floor, Exchange Flags, Horton House, Liverpool, L2 3PF, United Kingdom
• Phone: +44 (0) 151 459 3400

Williamson & Croft

Williamson & Croft provides transaction services covering both buy-side and sell-side due diligence, with offices in Liverpool and Manchester. Their work focuses on helping businesses assess financial performance, operational risks and transaction structures during acquisitions, disposals and investment activity. Across their transaction advisory services, there is a consistent focus on practical financial analysis and commercial decision-making.

Projects may involve reviewing cashflow performance, tax exposure, operational assumptions and valuation considerations before a deal progresses. The firm also supports businesses preparing for sale processes through vendor due diligence and transaction preparation work. Alongside transaction reviews, they provide related advisory support covering valuations, forecasting and transaction structuring across several sectors including technology, property, retail and professional services.

Key Highlights:

• Liverpool-based transaction advisory presence
• Buy-side and sell-side due diligence services
• Support across acquisitions, disposals and investment activity
• Financial and operational transaction reviews
• Sector experience across technology, retail and property
• Additional valuation and forecasting capabilities

Services:

• Buy-side due diligence
• Sell-side due diligence
• Tax due diligence
• Vendor assistance
• Structuring advice
• Cash flow forecasting
• Business valuations
• Transaction advisory
• Financial due diligence
• Operational review support

Contact Information:

• Website: www.williamsoncroft.co.uk
• Email: info@uhy-williamsoncroft.com
• Twitter: x.com/williamsoncroft
• LinkedIn: www.linkedin.com/company/williamsoncroft
• Address: 1 Old Hall Street, 1^st Floor, Liverpool, L3 9HF
• Phone: 0151 303 3112

DSG

DSG presents due diligence as part of a broader corporate finance offering linked to acquisitions, business sales and funding activity. Their financial due diligence work is designed to support transaction planning by examining commercial risks, validating financial assumptions and identifying areas that may affect deal value before completion.

Beyond transaction reviews, the firm provides support around valuation, forecasting and vendor preparation. Some engagements focus on helping businesses prepare for sale processes, while others centre on assessing liquidity, financial modelling or acquisition structures during negotiations and investment discussions.

Key Highlights:

• Corporate finance and transaction advisory focus
• Financial due diligence linked to acquisitions and disposals
• Support during valuation and deal structuring processes
• Vendor preparation and transaction planning services
• Financial modelling and forecasting capabilities
• Liverpool office presence

Services:

• Financial due diligence
• Business sales and acquisitions support
• Vendor assist
• Business planning and forecasting
• Working capital optimisation
• Raising finance advisory
• Valuation services
• Deal structuring support

Contact Information:

• Website: dsg.co.uk
• Email: liverpool@dsg.co.uk
• LinkedIn: www.linkedin.com/company/dsg-chartered-accountants
• Address: Castle Chambers, 43 Castle Street, Liverpool, L2 9TL 
• Phone: 0151 294 5400

Intime Investigations

Intime Investigations approaches due diligence through detailed investigative review work covering corporate, financial and reputational risks. Their process combines database research with human-led investigations, particularly where clients need additional verification before entering partnerships, acquisitions or commercial agreements. A large part of their work focuses on identifying hidden liabilities, undisclosed relationships and regulatory concerns that may not appear through standard background checks.

The firm’s due diligence services extend across legal, financial and operational areas, including corporate ownership analysis, litigation history, sanctions screening and executive verification. In more complex cases, investigations may involve field enquiries, fraud indicators, supplier screening or international checks linked to cross-border transactions and investment activity.

Key Highlights:

• Investigative due diligence and corporate intelligence focus
• Corporate, legal and reputational risk assessments
• Financial and ownership verification reviews
• GDPR-compliant investigation processes
• International due diligence capabilities
• Support for legal, investment and M&A-related matters

Services:

• Corporate due diligence
• Financial due diligence
• Legal due diligence investigations
• Supplier due diligence
• Executive background checks
• Fraud risk investigations
• Business risk assessments
• Corporate intelligence reviews
• Vendor due diligence
• International due diligence checks

Contact Information:

• Website: www.intimeinvestigations.com
• Email: info@intimeinvestigations.com
• Address: 20-22 Wenlock Road, London, N1 7GU, United Kingdom
• Phone: 0207 060 2907

Sedulo

Sedulo positions due diligence within its wider transaction services and deal advisory offering, supporting businesses, investors and funding providers involved in mergers and acquisitions activity. Their reviews focus on validating financial information, assessing transaction risks and examining areas of operational weakness that could influence investment or acquisition decisions.

A noticeable part of their approach involves combining due diligence with valuation work, financial modelling and transaction planning. Alongside financial analysis, the firm looks at how businesses present operational performance, projected growth and commercial assumptions during fundraising or sale processes.

Key Highlights:

• Transaction services linked to M&A activity
• Financial due diligence and deal advisory support
• Work with investors, lenders and business owners
• Business valuation and modelling capabilities
• Buy-side transaction assistance
• Liverpool office presence

Services:

• Financial due diligence
• Deal advisory
• Buy-side assistance
• Business valuations
• Business modelling and projections
• Transaction management support
• Business plan preparation
• Mergers and acquisitions advisory

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: Walker House, Exchange Flags, Liverpool, L2 3YL
• Phone: 0333 222 4445

HQ Accountancy

HQ Accountancy discusses due diligence mainly through the lens of company acquisitions and business sales. Their content focuses on the preparation stage before transactions move forward, particularly around reviewing financial records, resolving outstanding issues and improving transaction readiness ahead of negotiations or sale discussions.

The firm highlights the importance of involving financial and legal advisers early in the process to identify liabilities, tax concerns and contractual risks that could delay or affect a deal. Their approach appears centred on helping business owners organise financial information and understand the commercial implications connected to acquisitions or mergers.

Key Highlights:

• Focus on business acquisitions and sale preparation
• Due diligence linked to transaction readiness
• Financial review support before acquisitions
• Assistance with deal structuring discussions
• Risk and liability assessment during transactions
• Liverpool-based accountancy firm

Services:

• Acquisition support
• Due diligence preparation
• Financial review services
• Deal structure advisory
• Business sale support
• Mergers and acquisitions assistance
• Tax issue review
• Business advisory

Contact Information:

• Website: hqaccountancy.co.uk
• Email: info@hqacc.co.uk
• Facebook: www.facebook.com/HQ-Accountancy-103202608929446
• LinkedIn: www.linkedin.com/company/hq-accountancy
• Instagram: www.instagram.com/hqaccountancy
• Address: 3rd Floor, Granite Buildings, 6 Stanley Street, Liverpool, L1 6AF
• Phone: 0151 458 3090

Mitchell Charlesworth

Mitchell Charlesworth presents due diligence as a key part of the decision-making process during acquisitions, investments and business sales. Their reviews focus on validating financial assumptions, examining operational risks and assessing the wider commercial position of a target company before contracts are exchanged.

Different transactions require different levels of review, so the firm tailors its due diligence scope around the structure and complexity of the deal itself. Areas examined may include historic financial performance, cashflow, tax exposure, forecast assumptions and internal financial controls. Vendor due diligence support is also available for businesses preparing for sale processes and investor discussions.

Key Highlights:

• Financial due diligence linked to acquisitions and investments
• Buy-side and vendor due diligence support
• Review of financial systems and forecast assumptions
• Focus on transaction risk analysis
• Multi-disciplinary advisory involvement
• Liverpool office presence

Services:

• Buyers due diligence
• Vendor due diligence
• Financial analysis and review
• Cashflow assessment
• Tax position review
• Forecast testing
• Financial systems review
• Deal structure analysis

Contact Information:

• Website: www.mitchellcharlesworth.co.uk
• LinkedIn: www.linkedin.com/company/mitchell-charlesworth
• Instagram: www.instagram.com/mitcharlesworth
• Address: 14th Floor, The Plaza, Old Hall St, Liverpool L3 9QJ  
• Phone: 0151 255 2300

Conclusion

Choosing a due diligence provider often comes down to the type of transaction involved, the level of risk exposure and the areas that need the closest review. Some firms focus heavily on financial and tax analysis, while others bring wider experience across regulatory compliance, operational risk, investigations or transaction advisory support.

In Liverpool, businesses have access to a broad mix of providers ranging from large advisory networks to specialist firms working in corporate finance, forensic investigations and deal support. The right fit will usually depend on the complexity of the transaction, the industry involved and the level of insight required before decisions are made.

This guide was created to provide practical context around the due diligence companies operating in Liverpool and the types of services they offer. Reviewing different approaches side by side can make it easier to narrow down which firms may be relevant for a particular acquisition, investment, partnership or restructuring project.