When legal disputes become more complex, having the right professional support can make a significant difference. Litigation support services help businesses, legal teams and individuals manage financial, accounting and evidential matters that arise throughout the course of a dispute, whether during investigations, court proceedings or alternative forms of dispute resolution.
Across the UK, a wide range of firms provide litigation support services. Some specialise in forensic accounting and expert witness work, while others offer broader advisory capabilities that include valuations, fraud investigations, regulatory matters and financial analysis. The right provider often depends on the nature of the dispute, the industry involved and the level of technical expertise required.
This guide highlights a selection of litigation support services providers operating in the UK. Rather than ranking firms, its purpose is to offer practical context by introducing organisations active in this area, outlining the services they provide and the types of matters they typically support. Whether you are seeking assistance with commercial litigation, shareholder disputes, fraud investigations or expert witness services, understanding the different approaches available can help you make a more informed decision.
Acumon
Acumon is a UK firm of chartered accountants and advisors providing litigation support services to companies, organisations and individuals across the UK.
The firm works with clients ranging from owner-managed businesses and corporate groups through to solicitors, legal advisers and private individuals. Litigation support services are designed to assist with commercial disputes by providing independent financial analysis, objective assessments and expert accounting support throughout legal proceedings.
Acumon provides litigation support services across a range of commercial and financial matters, including forensic accounting, financial investigations, loss quantification, business valuations and document analysis. Services are delivered using a structured methodology tailored to the facts of each case, the legal issues involved and the specific requirements of clients and their legal advisers.
Acumon holds a Public Interest Entity (PIE) audit licence, enabling the firm to support organisations subject to enhanced regulatory oversight in the United Kingdom. In addition to its UK statutory audit registration, the firm also maintains audit licences in the Cayman Islands, British Virgin Islands (BVI), Jersey and Isle of Man, supporting clients involved in international structures and cross-border disputes.
Commercial disputes frequently involve complex financial information that requires detailed analysis and independent professional assessment. Acumon works with solicitors, management teams and business owners to review financial evidence, quantify losses and support litigation strategies with robust financial insight.
Litigation Support Capabilities
Acumon provides litigation support services across a wide range of commercial matters and legal proceedings.
These include:
- commercial litigation
- shareholder and partnership disputes
- contractual disputes
- business valuation matters
- financial investigations
- cross-border commercial disputes
Litigation support engagements are typically led by experienced professionals with direct involvement throughout the engagement.
Regulatory Licences and Registrations
Acumon holds several audit registrations that enable it to support organisations operating across multiple 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 allow the firm to support organisations operating across both the UK and key international financial centres.
Core Services
In addition to litigation support services, Acumon provides a range of services that support financial reporting and governance.
These include:
- forensic accounting and financial investigations
- litigation support and loss quantification
- statutory external audit
- group and subsidiary audits
- Public Interest Entity (PIE) audits
- charity and not-for-profit audit
- internal audit and governance reviews
- risk management and compliance support
Litigation support work is often delivered alongside discussions with solicitors, legal advisers and management regarding financial evidence, dispute resolution strategies and the interpretation of complex accounting information.
Many organisations require litigation support when commercial disputes arise, financial losses need to be assessed or independent financial expertise is required to support legal proceedings.
Acumon works with clients that are:
- managing commercial disputes
- reviewing complex financial evidence
- quantifying financial losses
- resolving shareholder or contractual disputes
- requiring independent forensic accounting support
Early engagement can help ensure that financial evidence is assessed thoroughly, key accounting issues are identified promptly and litigation strategies are supported by objective financial analysis.
Contact Information
- Website: acumon.com
- Email: mail@acumon.com
- Address: 1-2 Craven Road, Ealing, London, W5 2UA, UK
- Phone: 020 8567 3451
Jack Ross Forensic Accountants
Jack Ross Forensic Accountants provide litigation support services for solicitors, legal teams and businesses involved in commercial and financial disputes. Their work focuses on the accounting and financial issues that arise during legal proceedings, helping to assess financial evidence, quantify losses and explain complex financial matters in a way that supports the legal process. Depending on the requirements of a case, they may be instructed in an advisory capacity or appointed as independent expert witnesses for court proceedings.
Their litigation support covers a broad range of commercial disputes, including breach of contract, professional negligence, shareholder matters and business interruption claims. Alongside financial loss assessments, they undertake forensic investigations, business valuations and analysis linked to fraud or asset-related disputes where specialist accounting expertise is required. This combination of forensic accounting and litigation support enables legal teams to access financial analysis throughout different stages of a dispute, from the initial review of a claim to mediation or trial.
Key Highlights:
- Litigation support for commercial and financial disputes
- Forensic accounting and financial investigations
- Independent expert witness appointments
- Financial loss and damages quantification
- Business valuation expertise for dispute resolution
- Support for mediation, arbitration and court proceedings
- Experience with professional negligence and contractual claims
Services:
- Litigation support
- Expert witness reports
- Commercial damages assessment
- Loss of profits analysis
- Business interruption claims
- Professional negligence support
- Forensic investigations
- Business valuations
Contact Information
- Website: forensic.legal
- Address: Barnfield House, The Approach, Manchester M3 7BX
- Phone: 0161 832 4451
AAB
AAB provides litigation support services across a range of commercial, financial and personal disputes, combining accounting, corporate finance and forensic expertise where financial evidence forms part of legal proceedings. Their work includes assisting solicitors, businesses and individuals with financial analysis, valuations and investigations that help clarify the issues in dispute and support informed legal decisions.
The firm's litigation support extends beyond commercial claims to include fraud investigations, insolvency-related matters and family disputes where financial issues require independent analysis. Depending on the nature of the case, assignments may involve preparing expert evidence, reviewing financial records, quantifying losses or supporting legal teams during negotiations, mediation and court proceedings. This multidisciplinary approach allows financial, valuation and investigative work to be considered together where disputes involve several overlapping issues.
Key Highlights:
- Litigation support for commercial, insolvency and family disputes
- Forensic accounting and financial investigations
- Business, share and partnership valuations
- Financial loss assessment and expert evidence
- Support for solicitors, businesses and private individuals
- Experience with fraud and insolvency-related matters
- Multidisciplinary accounting and corporate finance expertise
Services:
- Litigation support
- Forensic accounting
- Share and business valuations
- Commercial dispute support
- Loss of profit assessments
- Fraud investigations
- Insolvency investigations
- Expert witness services
Contact Information
- Website: aab.uk
- Facebook: www.facebook.com/AABLLP
- Twitter: x.com/AABGroup_
- LinkedIn: www.linkedin.com/company/aab-accountants
- Instagram: www.instagram.com/_aabgroup
- Address: One The Square, Bristol, BS1 6DG
- Phone: +44 (0) 117 214 0369
Kreston Global
Kreston Global offers litigation support services through their international network of member firms, assisting businesses, legal advisers and individuals involved in financial disputes. Their work centres on examining financial evidence, assessing economic losses and providing forensic accounting expertise where complex legal matters require independent financial analysis. Support is available across commercial litigation, arbitration and other forms of dispute resolution.
Cases involving fraud, hidden assets or contractual disagreements often require a combination of investigative and financial expertise. Their litigation support brings together forensic accounting, asset tracing and expert witness services to help legal teams understand financial issues and present evidence clearly during legal proceedings. Access to specialists across different jurisdictions also supports matters with an international element.
Key Highlights:
- Litigation support through a global network of member firms
- Forensic accounting and financial investigations
- Economic loss and damages assessment
- Asset tracing and recovery support
- Expert witness services
- Assistance with arbitration and dispute resolution
- Experience in cross-border financial matters
Services:
- Litigation support
- Forensic accounting
- Fraud investigations
- Economic damage assessments
- Asset tracing and recovery
- Expert witness testimony
- Evidence analysis
- Arbitration support
Contact Information
- Website: www.kreston.com
- Facebook: www.facebook.com/KrestonHQ
- LinkedIn: www.linkedin.com/company/kreston-global
- Address: 7 Bell Yard, London WC2A 2JR
Grant Thornton UK
Grant Thornton UK provides litigation support as part of their forensic and investigation services, working with law firms, businesses and regulatory bodies on disputes involving financial and commercial issues. Their role includes analysing financial information, preparing expert evidence and supporting legal proceedings where accounting, valuation or investigative expertise is needed. The team is involved in litigation, arbitration and specialist regulatory hearings across a range of sectors.
Many assignments combine financial analysis with digital forensic techniques, particularly where large volumes of information need to be reviewed or investigated. Their litigation support covers commercial claims, fraud investigations, valuation disputes and regulatory matters, giving legal teams access to financial and technical expertise throughout different stages of a dispute.
Key Highlights:
- Litigation support for commercial and regulatory disputes
- Forensic accounting and investigation services
- Expert witness and arbitration support
- Digital forensic capabilities
- Financial analysis for complex litigation
- Experience across multiple industry sectors
- Support for asset recovery matters
Services:
- Litigation support
- Expert witness services
- Forensic investigations
- Loss of profits analysis
- Breach of contract disputes
- Valuation disputes
- Fraud investigations
- Digital forensic support
Contact Information
- Website: www.grantthornton.co.uk
- LinkedIn: www.linkedin.com/company/grant-thornton-uk
- Instagram: www.instagram.com/gt_trainees
- Address: 8 Finsbury Circus, London, EC2M 7EA
- Phone: +44 (0)20 7383 5100
JMW Solicitors
JMW Solicitors provides litigation support in matters connected with the Court of Protection, personal injury and clinical negligence claims. Their work focuses on the financial and legal issues that arise where individuals require ongoing support following serious injury or loss of capacity. This includes preparing expert evidence that helps quantify future professional costs and supports claims throughout the litigation process.
Their involvement often continues beyond the preparation of reports, with appointments as professional deputies or trustees where ongoing financial management is required after settlement. Alongside expert witness drafting, the team works with litigators on issues such as capacity, interim payments and future care arrangements, contributing specialist knowledge to complex personal injury and Court of Protection cases.
Key Highlights:
- Litigation support for Court of Protection matters
- Expert witness statement drafting
- Support for personal injury and clinical negligence claims
- Professional deputy and trustee services
- Financial evidence for future care costs
- Assistance throughout the litigation process
- Court attendance where required
Services:
- Litigation support
- Expert witness statement drafting
- Court of Protection support
- Professional deputy services
- Trustee appointments
- Future cost schedules
- Capacity assessments support
- Court attendance
Contact Information
- Website: www.jmw.co.uk
- Facebook: www.facebook.com/jmwsolicitors
- Twitter: x.com/jmwsolicitors
- LinkedIn: www.linkedin.com/company/jmwsolicitors
- Instagram: www.instagram.com/jmw_solicitors
- Address: 125 Deansgate, Manchester, M3 2BY
- Phone: 0345 872 6666
HKA
HKA provides litigation support across a broad range of disputes involving construction, engineering, financial matters and regulatory issues. Their multidisciplinary teams include specialists in forensic accounting, digital forensics, engineering and valuation, allowing legal teams to draw on different areas of expertise where disputes involve technical as well as financial questions. Their work supports litigation, arbitration and other formal dispute resolution processes.
Many of the matters they assist with involve detailed investigations, expert analysis and independent opinions that help explain complex evidence. Alongside financial disputes, they are regularly involved in construction claims, intellectual property matters, government contracting, compliance issues and international arbitration, reflecting the wide scope of disputes where specialist expert evidence may be required.
Key Highlights:
- Litigation support across multiple industries
- Multidisciplinary expert witness services
- Forensic accounting and digital forensics
- Construction and engineering dispute expertise
- International arbitration support
- Risk, compliance and investigation services
- Technical and financial expert analysis
Services:
- Litigation support
- Expert witness services
- Forensic accounting
- Digital forensic investigations
- Damages and valuation analysis
- Construction dispute support
- International arbitration
- Investigations
Contact Information
- Website: www.hka.com
- Email: enquiries@hka.com
- Facebook: www.facebook.com/HKAGlobal
- Twitter: x.com/HKAGlobal
- LinkedIn: www.linkedin.com/company/hka-global
- Address: 6160 Knights Court, Solihull Parkway, Birmingham Business Park, Birmingham B37 7WY
- Phone: +44 121 717 5770
Forvis Mazars
Forvis Mazars provides litigation support for organisations involved in commercial disputes, arbitration and legal proceedings where financial issues need to be examined in detail. Their work focuses on analysing the financial impact of disputes, documenting evidence and assessing losses to support legal advisers and decision-makers throughout the course of a case.
Financial expertise is combined with transaction and valuation experience where disputes relate to business acquisitions, contractual arrangements or warranty claims. In addition to preparing financial analysis, they contribute expert testimony when required and assist legal teams by presenting financial findings in a structured and understandable way.
Key Highlights:
- Litigation support for commercial disputes
- Financial loss assessment
- Support for arbitration and legal proceedings
- Financial evidence preparation
- Expert financial testimony
- Experience with transaction-related disputes
- Valuation and financial advisory expertise
Services:
- Litigation support
- Financial loss assessments
- Expert witness services
- Arbitration support
- Warranty and indemnity dispute analysis
- Financial evidence preparation
- Business valuation support
- Transaction-related dispute assistance
Contact Information
- Website: www.forvismazars.com
- Facebook: www.facebook.com/ForvisMazarsGroup
- Twitter: x.com/ForvisMazarsGR
- LinkedIn: www.linkedin.com/company/forvis-mazars-group
- Instagram: www.instagram.com/ForvisMazarsGroup
- Address: 30 Old Bailey, London, EC4M 7AU, United Kingdom
- Phone: +44 (0) 20 7063 4000
Crowe
Crowe takes part in litigation support matters where financial evidence plays a key role in resolving disputes. Their team brings together business valuation and forensic accounting expertise to assist legal advisers and clients with questions around financial loss, business value and accounting issues that arise during legal proceedings. Depending on the circumstances, they may act in an advisory capacity or prepare independent expert evidence for mediation, arbitration or court.
Commercial and civil disputes often involve more than reviewing financial records alone, particularly where fraud, shareholder disagreements or business interruption claims are involved. Their litigation support covers financial investigations, reconstruction of accounting records and economic loss analysis, helping legal teams understand the financial position behind a claim and present evidence in a clear and structured way.
Key Highlights:
- Litigation support for commercial and civil disputes
- Forensic accounting and business valuation expertise
- Independent expert witness services
- Financial loss and economic damage analysis
- Fraud and financial investigations
- Asset protection and recovery support
- Experience with mediation, arbitration and court proceedings
Services:
- Litigation support
- Business valuations
- Forensic accounting
- Economic loss assessments
- Fraud investigations
- Asset tracing and recovery
- Financial record reconstruction
- Expert witness testimony
Contact Information
- Website: www.crowe.com
- Email: michael.jayson@crowe.co.uk
- Twitter: x.com/CroweUK
- LinkedIn: www.linkedin.com/company/crowe-uk
- Instagram: www.instagram.com/crowe_uk
- Address: 3rd Floor, St George's House, 56 Peter Street, Manchester M2 3NQ
- Phone: +44 (0)161 214 7500
Saffery
Saffery are involved in litigation support where financial, accounting and tax matters form part of legal proceedings. Their forensic and litigation team assist solicitors and their clients by examining financial information, preparing expert opinions and supporting disputes that require specialist accounting expertise. The firm is particularly active in matrimonial proceedings, where financial analysis and business valuations often contribute to resolving complex cases.
Financial investigations can vary significantly depending on the nature of a dispute, and their experience covers tax enquiries, share valuations and forensic accounting assignments. When cases proceed to court, arbitration or another formal process, expert reports and independent evidence help explain financial issues in a structured and understandable way for all parties involved.
Key Highlights:
- Litigation support for financial and commercial disputes
- Forensic accounting expertise
- Specialist matrimonial support
- Tax investigation experience
- Share valuation services
- Independent expert witness reports
- Support for solicitors and legal proceedings
Services:
- Litigation support
- Forensic accounting
- Expert witness reports
- Matrimonial financial support
- Share valuations
- Tax investigations
- Financial analysis for disputes
- Court expert testimony
Contact Information
- Website: www.saffery.com
- Email: info@saffery.com
- LinkedIn: www.linkedin.com/company/saffery
- Instagram: www.instagram.com/saffery_uk
- Address: Midland House, 2 Poole Road, Bournemouth, Dorset BH2 5QY, UK
- Phone: +44 (0)1202 204744
UHY
UHY approaches litigation support from a tax dispute perspective, helping businesses and individuals dealing with disagreements involving HM Revenue & Customs. Their involvement focuses on explaining available options, assessing the financial and legal issues surrounding a case, and supporting clients throughout the tribunal process where formal proceedings become necessary.
VAT disputes often require detailed technical knowledge alongside clear financial evidence. Their team assists with appeals, tribunal preparation and communication with HMRC, while also working alongside legal advisers or recommending specialist counsel where additional representation is appropriate. This makes their litigation support particularly relevant for disputes involving indirect tax matters.
Key Highlights:
- Litigation support for VAT and tax disputes
- HMRC dispute assistance
- VAT tribunal representation
- Advice on appeals and reconsiderations
- Experience with indirect tax matters
- Support throughout tribunal proceedings
- Collaboration with legal representatives
Services:
- Litigation support
- VAT dispute advice
- HMRC appeals
- Tribunal representation
- Tax dispute analysis
- Case preparation
- Technical VAT advice
- Counsel coordination
Contact Information
- Website: www.uhy-uk.com
- Facebook: www.facebook.com/uhyuk
- LinkedIn: www.linkedin.com/company/uhy-hacker-young
- Instagram: www.instagram.com/uhy_uk
- Address: Glenewes House, Gate Way Dr, Yeadon, Leeds
- Phone: +44 113 257 4506
PwC
PwC are involved in litigation support and forensic investigations where financial disputes require detailed analysis and independent findings. Their teams assist legal advisers, investors, creditors and regulators by investigating financial matters, reviewing complex transactions and preparing evidence that can be used during legal proceedings. Many of the cases they handle involve commercial disputes with significant financial or cross-border elements.
Asset tracing, fraud investigations and expert witness work form an important part of their litigation support offering. Financial investigations are often carried out alongside legal teams to establish the facts behind a dispute, assess financial evidence and support court proceedings or settlement discussions. Their experience also extends to cases involving complex financial structures and international transactions.
Key Highlights:
- Litigation support for commercial disputes
- Forensic investigations and financial analysis
- Asset tracing services
- Expert witness support
- Experience with cross-border financial matters
- Fraud investigation capabilities
- Support for investors, creditors and regulators
Services:
- Litigation support
- Forensic investigations
- Asset tracing
- Expert witness services
- Commercial dispute analysis
- Fraud investigations
- Financial evidence review
- Cross-border transaction analysis
Contact Information
- Website: www.pwc.com
- Facebook: www.facebook.com/PwC
- Twitter: x.com/pwc
- LinkedIn: www.linkedin.com/company/pwc
- Address: 1 Embankment Place, London, WC2N 6RH, United Kingdom, WC2N 6RH
- Phone: +44 (0)20 7583 5000
Deloitte
Deloitte approaches litigation support through multidisciplinary teams that combine legal, forensic, financial and technical expertise. Their dispute specialists assist organisations involved in commercial disagreements, regulatory matters and formal legal proceedings where independent analysis and expert evidence are required. The focus extends beyond individual disputes to understanding the commercial and operational issues that may influence the outcome of a case.
Many engagements involve collaboration between forensic accountants, valuation specialists, economists and technology professionals. This allows financial evidence, technical information and industry knowledge to be considered together, particularly in complex disputes that involve multiple areas of expertise. Their support covers litigation, arbitration and expert determination across a range of industries.
Key Highlights:
- Litigation support for commercial and regulatory disputes
- Multidisciplinary forensic and advisory teams
- Expert witness services
- Dispute advisory and litigation assistance
- Valuation and economic analysis
- Technology and forensic expertise
- Support for arbitration and expert determination
Services:
- Litigation support
- Dispute advisory
- Expert witness services
- Forensic investigations
- Valuation analysis
- Economic assessments
- Arbitration support
- Expert determination
Contact Information
- Website: www.deloitte.com
- Facebook: www.facebook.com/deloitteuk
- Twitter: x.com/deloitteuk
- LinkedIn: www.linkedin.com/company/deloitte
- Address: 1 New Street Square, London, EC4A 3HQ, United Kingdom
- Phone: +44 (0)20 7936 3000
KPMG
KPMG delivers litigation and dispute resolution services that combine legal, forensic and commercial knowledge to support organisations facing complex disputes. Their teams assist clients throughout the dispute lifecycle, from early case assessment through to litigation, arbitration and alternative dispute resolution. The emphasis is on helping legal strategies align with the commercial issues surrounding a case.
Disputes increasingly involve financial records, digital evidence and cross-border considerations, which is reflected in their multidisciplinary approach. Alongside courtroom representation and arbitration support, they draw on forensic, technology and data analysis capabilities where evidence needs to be examined in greater detail. Their litigation support is used across a range of sectors and jurisdictions where disputes extend beyond a single legal issue.
Key Highlights:
- Litigation support across domestic and cross-border disputes
- Legal and forensic expertise
- Arbitration and alternative dispute resolution support
- Technology-enabled evidence analysis
- Multidisciplinary dispute resolution approach
- Cross-border legal coordination
- Support throughout the dispute lifecycle
Services:
- Litigation support
- Arbitration support
- Alternative dispute resolution
- Pre-dispute case assessment
- Cross-border dispute management
- Evidence analysis
- Legal strategy support
- Technology-assisted litigation
Contact Information
- Website: kpmg.com
- Twitter: x.com/kpmguk
- LinkedIn: www.linkedin.com/company/kpmg-uk
- Address: 1 Marischal Square, Broad Street, Aberdeen, AB10 1DD
- Phone: +44 (0)1224 591 000
Conclusion
Litigation support can involve a broad range of financial and forensic services, from business valuations and loss assessments to fraud investigations, expert witness reports and dispute analysis. The type of support required will depend on the issues involved in a case, the stage of the proceedings and the specialist expertise needed.
The firms included in this guide offer different areas of litigation support, with some focusing on particular types of disputes and others covering a wider range of forensic and advisory services. Comparing their experience, areas of practice and the services they provide can help legal teams, businesses and individuals identify firms whose expertise is relevant to the requirements of a specific matter.