Due Diligence Firms in Leeds: A Practical Guide

Choosing a due diligence provider in Leeds is not just about getting a report before a transaction moves forward. The right firm can help an organisation see what sits behind the numbers, where risks may be hiding, and whether a deal, investment, or business decision still makes sense once the details are properly reviewed.

Leeds has a strong professional services market, with firms supporting acquisitions, disposals, funding decisions, restructuring, commercial reviews, and wider corporate finance work. Some providers work closely with owner-managed businesses and growing companies, while others support investors, lenders, private equity teams, and larger organisations dealing with more complex transactions.

This guide highlights a selection of due diligence services companies operating in Leeds. It is not written as a ranking. The aim is to give practical context – showing who these firms are, what types of clients they usually support, and where their due diligence services are most relevant.

Acumon

Acumon is a UK firm of chartered accountants and registered auditors that provides audit, financial reporting, governance, and risk-related services to companies, charities, and international corporate groups.

They work with a broad mix of organisations, from owner-managed companies and charities to larger corporate groups and regulated entities. In a due diligence setting, that experience is relevant because the review is rarely limited to the numbers alone. It often involves looking at how reliable the financial information is, how the records are maintained, whether reporting processes are clear, and whether there are governance or control issues that could affect a decision.

Acumon holds a Public Interest Entity (PIE) audit licence, which allows the firm to audit listed companies and other entities subject to enhanced regulatory oversight in the United Kingdom. That regulatory background is useful in transaction-related reviews where financial information, compliance, internal controls, and governance arrangements need to be examined with a careful and structured approach.

The firm also holds audit licences in several international financial centres, including the Cayman Islands, British Virgin Islands (BVI), Jersey, and Isle of Man. This matters for groups with cross-border structures, where a transaction may involve UK operating companies, offshore holding entities, subsidiaries, or investment vehicles across different jurisdictions.

International group structures often require more than a simple review of accounts. Businesses in sectors such as investment management, technology, energy, and international trade may have layered ownership arrangements, consolidated reporting, and financial records prepared across several locations. Acumon’s experience with these structures helps them review financial information in a way that reflects how the group is actually organised.

Acumon works with finance teams, directors, and boards to support due diligence requirements while also helping organisations understand the reporting processes, governance arrangements, internal controls, and risk areas that may influence a transaction or investment decision.

Due Diligence Services

Acumon provides due diligence services across a wide range of organisational structures and sectors. 

These include:

• UK limited companies and corporate groups
• Public Interest Entities (PIEs) and regulated organisations
• UK subsidiaries of international groups
• charities and not-for-profit organisations
• owner-managed businesses approaching statutory audit thresholds
• offshore holding companies and investment vehicles

Due diligence engagements are typically led by senior audit professionals with direct involvement throughout the review.

Regulatory Licences and Registrations

Acumon holds several audit registrations that allow the firm to work with organisations operating across more than one jurisdiction. This is especially relevant where a due diligence review involves a UK company alongside offshore entities, regulated structures, or international group arrangements.

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 provide audit and related financial review services to groups that include entities in both the UK and key international financial centres.

Core Services

Acumon’s wider services sit around audit, financial reporting, governance, and risk management. This can be useful for organisations that need transaction-focused review but also want to understand the strength of the financial systems and controls behind the business.

These include:

• statutory external audit
• group and subsidiary audits
• Public Interest Entity (PIE) audits
• charity and not-for-profit audit
• audit of international group structures
• internal audit and governance reviews
• risk management and compliance support

Their due diligence work can include discussion with management and boards around financial reporting processes, governance frameworks, documentation quality, internal controls, and areas that may require further review before a transaction progresses.

Many organisations seek this kind of support when they are preparing for external investment, considering an acquisition, entering a sale process.

Acumon works with businesses that are:

• approaching their first statutory audit
• preparing for external investment
• expanding into international markets
• operating within corporate group structures

Early engagement can help ensure that financial records, supporting documents, reporting processes, and governance information are organised before a transaction reaches a more detailed review stage.

Contact Information

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

Nationwide Investigations Group

Nationwide Investigations Group provides due diligence services in Leeds for individuals, law firms, and corporate clients. Their work sits more on the investigation and corporate intelligence side of due diligence, with a focus on checking information before a contract, hire, partnership, acquisition, or business decision moves ahead. The firm’s team includes investigators and forensic accountants, and their work can involve reviewing documents, financial records, agreements, liabilities, assets, and background information.

Nationwide Investigations Group also supports clients where the due diligence process involves wider risk checks, asset tracing, or corporate mapping. This can be useful in situations where a business needs to understand who they are dealing with, whether information has been withheld, or whether a proposed transaction carries risks that are not obvious at first glance. Their work covers Leeds and the wider Yorkshire area, while also drawing on a broader network for matters that involve information outside the local market.

Key Highlights:

• Due diligence services for individuals, law firms, and corporations
• Focus on corporate intelligence, risk review, and background checks
• Work includes asset, liability, and agreement tracing
• Support for business deals, partnerships, and acquisitions
• Experience with corporate, legal, and private investigation matters

Services:

• Due diligence investigations
• Corporate intelligence
• Asset investigations
• Liability tracking
• Fraud investigations
• Background checks
• Contract and deal review
• Financial document review
• Tracing missing persons
• Insurance investigation

Contact information:

• Website: www.nig.co.uk
• Phone: 020 7183 2991  
• E-mail: info@nig.co.uk
• Address: 85 Great Portland Street, London W1W 7LT
• Twitter: x.com/NIGroup

PKF Littlejohn

PKF Littlejohn provides due diligence and transaction advisory services for businesses involved in mergers, acquisitions, fundraising, refinancing, and sales. Their work is centred on helping buyers, sellers, and leadership teams understand the financial, tax, operational, and regulatory issues that may affect a transaction. Rather than treating due diligence as a final check, they support clients across different stages of a deal, from early preparation through to completion and post-deal planning.

PKF Littlejohn works with both experienced deal teams and organisations going through a transaction for the first time. Their due diligence work can cover financial, tax, IT, ESG, regulatory finance, and actuarial areas, depending on the needs of the transaction. They also support vendors preparing for sale, including readiness reviews, data book preparation, locked box papers, forecast modelling, and review of transaction documents such as SPAs and APAs.

Key Highlights:

• Due diligence support for mergers, acquisitions, fundraising, and sales
• Financial, tax, IT, ESG, regulatory finance, and actuarial review work
• Support for both buyers and sellers
• Vendor readiness and transaction preparation services
• Senior team involvement during the transaction process
• Post-deal support around completion accounts and earn outs

Services:

• Financial due diligence
• Tax due diligence
• IT and cyber due diligence
• ESG due diligence
• Regulatory finance due diligence
• Actuarial due diligence
• Vendor due diligence
• Transaction readiness reviews
• Data book preparation

Contact information:

• Website: www.pkf-l.com
• Phone: 0113 244 5141
• Address: 4^th Floor, 12 King Street, Leeds, Yorkshire, LS1 2HL
• Instagram: www.instagram.com/pkf.littlejohn
• Twitter: x.com/PKF_Littlejohn
• Linkedin: www.linkedin.com/company/littlejohn

Blacks Solicitors

Blacks Solicitors provides legal due diligence support through its Corporate team, working with owner-managed businesses, SMEs, and commercial clients in Leeds, Yorkshire, and across the UK. Their due diligence work is mainly connected to business purchases, where a buyer needs to understand the target company’s assets, liabilities, contracts, commercial position, and possible legal risks before completing a transaction.

Blacks Solicitors helps prepare due diligence questionnaires that are tailored to the business being reviewed. They then review the replies and supporting documents to prepare a report that helps the buyer make a more informed decision about the purchase and the price being paid. Their work can also sit alongside corporate finance advisers and acquisition teams, especially where legal, commercial, and financial issues need to be checked together as part of the wider deal process.

Key Highlights:

• Legal due diligence support for business purchases
• Work with owner-managed businesses and SMEs
• Due diligence questionnaires tailored to the target business
• Reports prepared from seller replies and supporting documents
• Focus on assets, liabilities, contracts, risks, and commercial prospects
• Coordination with acquisition teams and corporate finance advisers

Services:

• Legal due diligence
• Due diligence questionnaire preparation
• Due diligence reports
• Share purchase agreement support
• Asset purchase agreement support
• Heads of terms
• Investment agreements
• Corporate restructuring
• Shareholders’ agreements
• Commercial contract review
• Employment and HR review

Contact information:

• Website: www.lawblacks.com
• Phone: 0113 207 0000
• E-mail: Hello@LawBlacks.com
• Address: City Point, 29 King Street, Leeds LS1 2HL
• LinkedIn: www.linkedin.com/company/blacks-solicitors-llp
• Instagram: www.instagram.com/blackssolicitors          

Grant Thornton

Grant Thornton provides financial due diligence services for organisations involved in acquisitions and investment decisions. Their work focuses on helping buyers understand the financial position of a target business, including its past performance, earnings quality, working capital, net debt, tax risks, and the key figures behind the investment case. It is the type of due diligence that matters when the deal looks good on the surface, but the buyer still needs to understand what the numbers are really showing.

Grant Thornton’s transaction advisory team works with clients throughout the due diligence process, with findings shared as they come up rather than left until the final report. Their work can include reviewing underlying earnings, trading trends, KPIs, working capital, and debt-like items. For companies in Leeds, the firm also has a local connection through its transaction advisory leadership, while the wider team supports deals across different sectors and transaction types.

Key Highlights:

• Financial due diligence for acquisitions and investments
• Review of underlying earnings and one-off items
• Analysis of trading performance and key business drivers
• Working capital and net debt review
• Partner and director-led transaction advisory work
• Use of data analytics in the due diligence process

Services:

• Financial due diligence
• Acquisition due diligence
• Earnings quality review
• KPI and trading analysis
• Working capital review
• Net cash and debt analysis
• Tax risk review
• Transaction advisory
• Deals support

Contact information:

• Website: www.grantthornton.co.uk
• Phone: +44 (0)113 245 5514                                                                                                                                                                                         
• Address: 7th Floor, City Square, House 11, Wellington Street, Leeds, LS1 4DL
• LinkedIn: www.linkedin.com/company/grant-thornton-uk
• Instagram: www.instagram.com/gt_trainees

Sentio Partners

Sentio Partners is a Leeds-based corporate finance advisory firm that works with business owners, management teams, companies, boards, and financial institutions. Their due diligence work sits within a wider set of transaction services, including company sales, mergers and acquisitions, management buy-outs, private investment, debt advisory, and strategic advice. The tone of their work is practical: helping clients understand the transaction clearly, without burying the important points under technical language.

Sentio Partners supports financial due diligence as part of corporate finance transactions and funding decisions. This can be useful for businesses preparing for a sale, reviewing an acquisition, raising capital, or looking at the financial details behind a proposed deal. Their role is often connected to the broader transaction process, so due diligence is not treated as a separate box to tick, but as part of understanding value, risk, funding, and the path to completion.

Key Highlights:

• Leeds-based corporate finance advisory firm
• Financial due diligence as part of wider transaction work
• Support for company sales, acquisitions, and funding decisions
• Work with private companies, management teams, and institutions
• Clear advice focused on value, risk, and deal structure

Services:

• Financial due diligence
• Company sale planning and execution
• Corporate mergers and acquisitions
• Management buy-outs and buy-ins
• Strategic advice
• Equity release and development capital
• Debt advisory

Contact information:

• Website: sentiopartners.co.uk
• Phone: +44 (0) 113 204 2045
• E-mail: info@sentiopartners.co.uk
• Address: Minerva House, 29 East Parade, Leeds, LS1 5PS 
• Twitter: x.com/sentiopartners
• LinkedIn: www.linkedin.com/company/sentio-corporate-finance

DCR Partners

DCR Partners provides cyber, IT, and technology due diligence for organisations involved in M&A, investment, and business sale processes. Their work focuses on the technology side of a deal, where systems, data, software, infrastructure, cyber risks, and digital plans can affect the value of a transaction. This type of due diligence is useful when technology is not just a support function, but part of how the business operates, grows, or creates value.

DCR Partners works with both buyers and sellers. For buyers, they review the technology position of a target business, looking at risks, cost areas, and possible value opportunities. For sellers, they help prepare the technology and cyber story before investor review, so potential issues can be understood earlier. Their work can cover areas such as application architecture, infrastructure, data governance, resilience, people, third-party reliance, and future operating models.

Key Highlights:

• Cyber, IT, and technology due diligence for M&A
• Support for both buy-side and sell-side transactions
• Focus on technology risks, costs, and value opportunities
• Review of data, systems, infrastructure, and cyber resilience
• Useful for technology-led and digitally dependent businesses

Services:

• Cyber due diligence
• IT due diligence
• Technology due diligence
• Buy-side due diligence
• Sell-side due diligence
• Third-party risk review
• Technology risk assessment
• Data governance review
• Cyber resilience review

Contact information:

• Website: www.dcrpartners.co.uk
• Phone: 0113 524 6640
• E-mail: info@dcrpartners.co.uk
• Address: 7 Park Row, LS1 5HD, Leeds, ENGLAND
• LinkedIn: www.linkedin.com/company/dcr-partners

Codurance

Codurance provides technical due diligence for investors, buyers, and organisations reviewing software-led businesses during M&A. Their work looks at bespoke software products, development teams, technical processes, and the wider technology setup behind a business. It is aimed at situations where the buyer needs to understand whether the software can support growth, how the team works, and what technical risks may affect the investment case.

Codurance uses a structured assessment process that includes preparation, data collection, analysis, and recommendations. Their due diligence goes beyond basic code checks, covering product quality, architecture, security risks, development processes, test coverage, and knowledge spread across the team. The final output is usually a report with clear findings and practical recommendations, which can also support post-acquisition improvement planning.

Key Highlights:

• Technical due diligence for software products and teams
• Support for M&A and software investment decisions
• Review of code, architecture, processes, and team productivity
• Structured assessment with interviews, metrics, and analysis
• Recommendations linked to practical improvement areas

Services:

• Technical due diligence
• Software quality assessment
• Architecture assessment
• Product development maturity assessment
• Cloud quality assessment
• Code quality review
• Security risk review
• Test coverage review

Contact information:

• Website: www.codurance.com
• Phone: +442074902967                             
• E-mail: robert.gray@codurance.com
• Address: Platform, New Station St, Leeds LS1 4JB
• Twitter: x.com/codurance
• LinkedIn: www.linkedin.com/company/codurance
• Instagram: www.instagram.com/codurance

SMH Group

SMH Group provides due diligence through its corporate finance team, with offices including Leeds and Leeds Garforth. Their work is mainly aimed at businesses considering an acquisition, investment, or other major commercial decision. The focus is on helping clients understand the facts behind a target business before they commit, including the financial position, legal matters, market context, operations, and possible risks.

SMH Group’s due diligence services are shaped around the needs of each client rather than a fixed checklist. They can review financial statements, forecasts, contracts, market conditions, competitors, customer behaviour, operational processes, and risk areas. This gives buyers and investors a clearer view of what they are looking at, especially where the opportunity seems attractive but still needs proper checking before a decision is made.

Key Highlights:

• Due diligence support for acquisitions and investments
• Corporate finance team with Leeds office coverage
• Review of financial, legal, market, and operational areas
• Services tailored to the client’s priorities
• Focus on identifying risks before major business decisions

Services:

• Financial analysis
• Legal review
• Market research
• Operational analysis
• Risk assessment
• Forecast review
• Contract review
• Competitor review

Contact information:

• Website: smh.group
• Phone: 01132 424 677
• E-mail: info@smh.group
• Address: 2 Pavilion Business Park, Royds Hall Road, Lower Wortley, Leeds, LS12 6AJ
• Facebook: www.facebook.com/GroupSMH
• LinkedIn: www.linkedin.com/company/smhgroup
• Instagram: www.instagram.com/the.smh.group

Sedulo

Sedulo provides transaction services for business owners, private equity funds, debt investors, legal teams, family offices, and other parties involved in deals. Their due diligence work is mainly linked to mergers, acquisitions, investment, and finance decisions, where buyers or investors need to check whether the information provided by a seller or investee business holds up under review.

Sedulo’s financial due diligence focuses on the details behind a company’s affairs, including whether the figures used to support funding, investment, or acquisition discussions are broadly accurate. They also look at areas of material weakness, risks, and possible rewards connected to a transaction. Alongside due diligence, their transaction services cover valuations, business modelling, projections, and business plans, so their work can support both deal review and wider transaction preparation.

Key Highlights:

• Financial due diligence for acquirers and investors
• Support for buy-side transactions and deal management
• Work with business owners, private equity, lenders, and advisers
• Review of vendor or investee information before a deal
• Focus on transaction risks, rewards, and material weaknesses

Services:

• Financial due diligence
• Buy-side assistance
• Target appraisal
• Deal management
• Business valuations
• Business modelling
• Financial projections

Contact information:

• Website: sedulo.co.uk
• Phone: 0333 222 4445                                            
• Email: hello@sedulo.co.uk
• Address: St. Paul’s House, 23 Park Square, Leeds, LS1 2ND
• Facebook: www.facebook.com/SeduloGroup
• Instagram: www.instagram.com/sedulogroup
• Twitter: x.com/sedulo_group
• LinkedIn: www.linkedin.com/company/sedulo

DJH

DJH provides due diligence services for both buyers and sellers involved in business transactions. Their approach is built around getting into the detail before a buyer signs off on a deal, especially when the seller has held most of the information during earlier negotiations. For buyers, this means checking what they are actually buying, where the risks sit, and whether the expected benefits of the deal are realistic.

DJH also supports sellers who want to prepare before going to market or entering deeper buyer reviews. Their sell-side due diligence and pre-sale tax planning can help identify issues before a buyer finds them later and uses them to change the price or terms. Their wider transaction services include business plans, valuations, finance raising, forecasts, corporate finance, management buyouts, employee ownership trusts, and commercial funding.

Key Highlights:

• Due diligence support for buyers and sellers
• Review of risks, issues, and opportunities in transactions
• Buyer-side work focused on high-risk areas
• Sell-side due diligence for sale preparation
• Support linked to implementation planning and deal readiness

Services:

• Buyer due diligence
• Seller due diligence
• Sell-side due diligence
• Pre-sale tax planning
• Business plans
• Business valuations
• Raising finances and forecasts
• Corporate finance

Contact information:

• Website: www.djh.co.uk
• Phone: 0113 252 5911
• E-mail: leeds@djh.co.uk
• Address: 1-2 Victoria Court, Bank Square, Leeds, West Yorkshire, LS27 9SE
• Facebook: www.facebook.com/DJHBusinessAdvisers
• Twitter: x.com/DJHAdvisers
• LinkedIn: www.linkedin.com/company/djh-business-advisers

Conclusion

Choosing a due diligence services company in Leeds usually comes down to the type of risk an organisation needs to understand. Some firms are better suited to financial review, transaction planning, and deal support. Others are more relevant when the main concern is legal exposure, supplier checks, corporate intelligence, cyber risk, or the technical strength of a software business. That is why the right choice is not always the biggest name or the broadest service list. It is the provider whose work matches the questions behind the decision.

For a buyer, that may mean checking earnings, contracts, liabilities, working capital, systems, or management information before completing an acquisition. For a seller, it may mean preparing the business properly before a buyer starts asking difficult questions. For investors, lenders, and boards, due diligence can also provide a clearer view of whether the numbers, people, structure, and future plans are strong enough to support the next step.

This guide is useful because Leeds has a fairly mixed due diligence market. There are accountancy and corporate finance firms, legal teams, private investigation specialists, technology advisers, and broader transaction support providers. They do not all do the same job, even when they use similar wording. Comparing them side by side helps organisations narrow the field more sensibly and avoid choosing a provider based only on a familiar service title.

A practical next step is to look at the planned transaction or business decision first, then work backwards. What needs checking? Who will rely on the findings? Is the main risk financial, legal, operational, technical, reputational, or linked to the people behind the business? Once those points are clear, it becomes much easier to choose a due diligence company in Leeds that can support the process properly, without overcomplicating it or leaving important gaps.