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London

Founded in 2012, Signature Litigation has grown into one of London’s pre-eminent specialist dispute resolution practices. From the outset, we set out to do things differently: a conflict-free, disputes-only platform designed to give clients the undivided focus and strategic agility that complex, high-stakes matters demand.

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Gibraltar

Established in 2017, Signature Litigation's Gibraltar office was founded to address growing demand for specialist expertise in commercial litigation and private wealth disputes on the Rock.

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Paris

Signature Litigation AARPI houses one of France’s most enviable product liability practices, with the team also handling commercial and corporate litigation, insurance and reinsurance, toxic tort and ESG, civil fraud and asset tracing, international arbitration, administrative and public law.

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Frankfurt

Frankfurt has emerged as one of Europe's foremost financial and commercial centres and, increasingly, as a bridge between European and Asian markets. With that growth comes an increasing demand for sophisticated dispute resolution. Signature Litigation established its Frankfurt office to meet this need, bringing our conflict-free, disputes-only platform to the German market.

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Investigations and White Collar Crime

“Signature has a superb team who are really diligent, on top of all the issues on the case and great at proactively moving things forward.”

Chambers UK 2025, Dispute Resolution Specialist Firms

We navigate our clients through the full lifecycle of investigations, criminal proceedings and regulatory matters across the world.

We are trusted by corporate and individual clients in their most sensitive and complex cases. Our approach is focused, strategic, tailored to each client’s specific circumstances and attuned to broader legal, regulatory, commercial and reputational risks.

We have market-leading experience across our offices in London, Paris and Gibraltar in successfully representing clients in high-stakes investigations. We are equally well-versed in criminal and civil aspects of investigations with unique capability to represent corporates and individuals in “twin-track” cases. We have significant experience of defending our clients in investigations and prosecutions instigated by UK authorities including the Serious Fraud Office, Financial Conduct Authority, HM Revenue and Customs, the Financial Reporting Council, UK Competition & Markets Authority amongst others. In Gibraltar, we provide support to both regulators and regulated entities at every stage of the enforcement process including in appeals to the Supreme Court against decisions of the financial services regulator.

We are sector agnostic and have handled matters across a range of industries including corporate services, defence, digital assets and crypto, education, energy and infrastructure, engineering, financial services, insurance, manufacturing, mining pharmaceuticals, technology, sports and retail, and technology, media, and telecommunications. Our experience is truly global covering more than 30 countries and encompasses major cross-border matters involving issues in Brazil, Canada, China, the Czech Republic, Ecuador, Germany, Gibraltar, Greece, Hong Kong, India, Japan, Kazakhstan, Lusophone Africa, Monaco, Portugal, Romania, Russia, Saudi Arabia, South Africa, the United States and offshore jurisdictions.

Our multilingual team is capable of handling matters across borders and cultures. Our Lusophone desk comprises native and fluent Portuguese speakers with directory-recognised experience in handling major matters involving Brazil, Lusophone Africa and Portugal. Our capabilities in this area are unique in the London market.

Through our London and Paris offices we provide counsel on the application of UK and EU sanctions, as well as French and EU export control matters, covering both dual-use good and military good. We assist our clients to comply with reporting obligations to relevant authorities and handle investigations into potential sanctions breaches.

We regularly provide support to General Counsel, Chief Compliance Officers and boards in relation to broader compliance issues. We have experience in compliance monitorships, the implementation of post-settlement remediation measures, pre- and post-acquisition risk assessments and investigations in the context of insolvency. We also advise on issues relating to ESG compliance, including non-financial misconduct, environmental concerns and in other areas where the regulatory landscape is rapidly evolving.

Seamless Disputes and Offshore Capabilities

Due to the depth of our capabilities across the full range of contentious matters, we are uniquely well placed to handle “follow-on” civil litigation and international arbitration linked to criminal or regulatory investigations. Our office in Gibraltar has significant expertise in regulatory matters and allows us to provide advice on the offshore aspects of cross-border investigations. For matters involving jurisdictions where we do not have a physical presence, we have an extensive network of trusted local partners. When working on multidisciplinary or multijurisdictional matters, we pride ourselves on providing a seamless, client-focused service.

KEY INDIVIDUALS

Duncan Grieve is a stand-out partner in the investigations and corporate crime practice. He has an excellent knowledge of the law and is completely dedicated, always going the extra mile. A pleasure to work with.

– The Legal 500 UK 2025, Regulatory Investigations and Corporate Crime

He is an extremely well-regarded lawyer and is one of the leaders in the field. He is highly experienced.

– Chambers UK 2025, Financial Crime: Individuals

Abdulali is a fantastic lawyer. He is very calm and rational, as well as a great listener with a strategic mindset.

– Chambers UK 2025, Banking Litigation

Highly skilled in regulatory and public contracts disputes.

– The Legal 500 EMEA 2025, Administrative and public law

Excellent… Extremely user friendly with fantastic drafting skills [and] an eye to the bigger strategic picture.

– The Legal 500 UK 2024, International Arbitration

Sharon advises clients on corporate internal investigations and has particular expertise in white collar defence, investigations, and cross-border regulatory matters.

Case Highlights

Representing an authorised person with respect to s.393 FSMA reference proceedings in the Upper Tribunal and in the context of wider Court of Appeal and Supreme Court proceedings relating to the reported USD 6.2bn JP Morgan London Whale losses.

Advising a multi-billion-dollar asset management firm on the application of UK Russian sanctions to individual investors.

Advising clients on the application of UK Russian sanctions to transactions in the oil and gas sector.

Advising multinational financial institutions, fund managers and lenders on sanctions compliance and the exclusion of designated persons/ entities from fund structures.

Advising a Gibraltar financial services company with international reach on the potential implications under Gibraltar sanctions law of certain proposed transactions involving Russian nationals.

Advising a French luxury retail brand on its strategy and on obtaining the relevant authorizations from the Direction Générale du Trésor (the French Treasury) to maintain certain services and financial flows to its Russian subsidiary while winding down its operations in Russia in the context of the EU sanctions.

Advising a French car part manufacturer on obtaining the relevant authorizations from the Direction Générale du Trésor (the French Treasury) in connection with its exit from the Russian market, in the context of the EU sanctions against Russia following its invasion of Ukraine.

Representing a natural resources company on potential sanctions breaches in the shipping sector.

Advising a European civil and military vehicles manufacturer carrying out an audit and restructuring of its data storage solutions on their compliance with the EU and French military and dual-use goods export control regulations and related industry specific laws and guidance.

Representing a US military company in the negotiation of a EUR 21m contract for the purchase of 63 retired fighter jets from the French Ministry of Defense, with a view to serve as aggressors in adversary air services training in the US. This work also included obtaining the relevant export licenses.

Representing DOJ-appointed independent monitor of a Brazil-headquartered international conglomerate operating in engineering, infrastructure and petrochemicals sectors.

Investigation for a multinational technology company into embezzlement and corruption in Romania and Austria.

Investigation and subsequent demerger of a technology joint venture located in Tatarstan, Russia.

Investigation for a multinational, automotive-sector client on workplace misconduct investigation involving the UK, Switzerland and Romania.

Investigation for multinational client in the pharmaceutical sector responding to multiple whistleblowing allegations involving Germany, Kazakhstan and Saudi Arabia.

Representing a major international manufacturer during a corporate internal investigation.

Representing a multinational client in relation to infrastructure projects in Brazil, South America and Africa including interviews, site visits and remedial actions.

Advising a world-leading education institution in relation to a historic multi-year investigation.

Representing a leading Japanese technology company on a multi-faceted investigation involving criminal proceedings in the Czech Republic.

Representing concessionaire in investigation initiated by a multilateral development bank into a significant Brazilian infrastructure project.

Representing numerous infrastructure-sector clients in investigations stemming from Lavo Jato including the negotiation of novel corporate leniency agreements with Brazilian prosecuting authorities and regulatory agencies (MPF, CADE, CGU, TCU).

Representing a multinational pharmaceutical company in a major, multijurisdictional investigation resulting in the successful negotiation of a corporate resolution and dialogue with investigating authorities in the UK, U.S., Switzerland and Greece.

Representing a multinational consulting client in a global investigation linked to Luanda Leaks involving UK, U.S., Portuguese, and Angolan authorities resulting in a favourable declination in August 2024.

Anti-corruption due diligence on a USD 500 million international investment into the Brazilian mining sector.

Advising on anti-corruption risks relating to an investment into a Brazilian multinational’s mining operation in Mozambique.

During a nine-month, full-time client secondment, leading the global compliance integration of newly acquired company purchased for US USD 5.1 billion by a NASDAQ-listed conglomerate.

Advising a senior individual in relation to a global antitrust investigation.

Advising a senior hedge fund CEO under investigation for conduct related matters by the FCA.

Advising the directors and owners of an investment company accused of fraud in the litigation funding sector.

Advising on a private criminal prosecution brought against a Lebanese financial institution.

Advising an individual on SFO and FBI investigations relating to alleged money laundering relating to cross border credit card transactions and layering, including representation in FBI interviews

Preparing senior executives for appearances before UK Parliamentary Select Committees.

Representing a senior executive during the investigation and criminal proceedings relating to phone hacking at the News of the World newspaper.

Representing individuals under potential criminal investigation by HMRC. The criminal tax investigation was dropped.

Representing senior executive in SFO and DOJ investigation into alleged bribery in the Ecuadorian state insurance market. The investigation was dropped against client pre-charge.

Representing clients in relation to the negotiation of individual leniency agreements with the Brazilian Ministério Público Federal (MPF).

Representing numerous senior executives and traders during the investigation and subsequent criminal proceedings relating to LIBOR, EURIBOR, the FX market, the gold / silver fix and the aluminium market.

Representing General Counsel in numerous investigations including into high-profile accounting irregularities at a major retailer.

Representing individual clients in proceedings and interviews with the UK Financial Conduct Authority, the UK Serious Fraud Office, the London Metals Exchange, the U.S. Department of Justice, SEC, CFTC.

Representing a senior executive in SFO and DOJ investigations and civil claims relating to the “Tuna Bonds” case involving multi-billion dollar infrastructure investments in Mozambique.

Representing an individual in a reference to the Upper Tribunal challenging a Decision Notice issued by the Financial Conduct Authority prohibiting him from performing any senior management function. The matter involves alleged misconduct in relation to a discretionary fund management business carried out through a brokerage on behalf of retail customers, with allegations that markdowns on holdings were illegitimately applied and not properly notified to customers.

Representing an individual in a reference to the Upper Tribunal in relation to a decision notice issued by the Prudential Regulation Authority which raised issues as to fitness and propriety to perform certain regulated functions. Also advising the client on the pursuit of a complaint to the Financial Regulators Complaints Commissioner.

Advising a former senior exec of a Middle Eastern private equity firm in relation to regulatory investigations following the collapse of the firm with an estimated USD 1bn of debt.