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Work 020 3818 3500
Fax 020 3818 3501
London, Paris

Hermes Marangos

Work 020 3818 3500
Signature Litigation LLP

Work Department

Insurance and Reinsurance Litigation, Commercial Litigation


Hermès is a leading international disputes lawyer with over 25 years’ experience representing major organisations and entities on complex matters, including international (re)insurance, particularly in Latin America, the Mediterranean basin, MENA, West Africa and Asia. He is qualified both as a barrister and solicitor of England and Wales and has litigated, arbitrated or mediated in more than 60 countries. He has experience as an arbitrator and also has rights of audience in the MENA region and Latin America. Hermès also has experience in international securities litigation and is instructed on the leading actions on cross border cases in this area.  He is also advising international companies on new cyber exposures and resulting disputes.

Hermès has led teams handling major litigation relating to financial institutions, liability, construction, engineering and energy. He also advises clients on regulatory and corporate matters.

Hermès is fluent in seven languages, including Spanish and Portuguese. He is a Vice President of the Insurance Institute of London and drafts critical wordings for the international market. He also works closely with various bodies, including the Ministry of Justice, the Bar Council and the Law Society, in promoting English law and jurisdiction worldwide. He advises international organisations on human rights, including on the rights of children and the demobilisation of child soldiers.

Hermès is co-author of a key textbook on reinsurance law, co-author of the book "War Risks and Terrorism", and contributor to textbooks on conflicts of law, property risks and mass torts. Furthermore, he has also contributed to the “Getting the Deal Through: Insurance Litigation 2018” Guide and regularly writes on issues relating to cyber-attacks. Hermès lectures and publishes widely on significant international conflicts of law matters and on specialist risks and legal and forensic investigations.


Called to the Bar 1985; Middle Temple; Clifford Chance; Clyde & Co; Partner DAC Beachcroft LLP 2008; Partner Signature Litigation 2014.


English, Spanish, Portuguese, French, German, Italian and Greek.


Vice President of the Insurance Institute of London; Member of the IBA; Member of the Brazilian Chamber of Commerce; Member of the Brazil Canada Arbitration Chamber, Member of the Oil, Petrochemical and Energy Risks Association; Member of the Chilean Chamber for Construction.


Cambridge; LSE; St. Anna Academy of Post Doctoral Studies.

London: Dispute resolution

Banking litigation: investment and retail

Within: Banking litigation: investment and retail

Signature Litigation LLP 'does a good job of predicting the potential moves of opponents and taking countermeasures in advance'. The practice advises on all aspects of large-scale banking litigation. Highlights included acting for one of the three lead groups of RBS shareholders, which brought unprecedented claims under the Financial Services and Markets Act’s section 90, against RBS with respect to its failed 2008 rights issue; the work involved the first major test of the section 90 liability, supported by a huge evidential a>nd forensic review of RBS’ businesses, particularly in relation to liquidity, capital and credit market exposure. The team also acted for Desiman, a property company, against Bank of Scotland, HBOS Treasury Services and Lloyds Bank for mis-selling LIBOR- referenced interest rate swaps; breach of implied representations; and wrongful appointment of administrative receivers.Graham Huntley is the founding partner and Abdulali Jiwaji 'has an ability to analyse difficult issues and provide concise and clear advice'. Other highly rated litigators are Simon Bushell, Julian Connerty, Daniel Spendlove and Natalia Chumak, along with Adam Rooney, Hermes Marangos, Ioannis Alexopoulos and Josh Wong, while Rory Spillman is a notable senior associate.

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Commercial litigation

Within: Commercial litigation

'A first-class firm with a positive, collaborative culture of integrity', Signature Litigation LLP is a highly specialised dispute resolution firm, with a strong focus on large, complex and often cross-border cases. The practice advised the ECU Group in a pre-action disclosure application against HSBC UK, HSBC Private Bank and HSBC USA for trading data involving a series of foreign exchange trades in excess of £400m. Graham Huntley is the recommended founding partner; Abdulali Jiwaji 'has excellent interpersonal skills, is very good with clients and a pleasure to work with'; and Daniel Spendlove is 'very smart, client focused and details-oriented'. Other key contacts include Simon Bushell, Ioannis Alexopoulos, Natalia Chumak, Hermes Marangos, Adam Rooney, Julian Connerty and Josh Wong .

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London: Insurance

Insurance and reinsurance litigation

Within: Leading individuals

Hermes Marangos - Signature Litigation LLP

Within: Insurance and reinsurance litigation

Signature Litigation LLP's team focuses on complex international insurance disputes, making it ‚Äėan excellent, trustworthy firm for heavyweight litigation‚Äô. The highly specialised dispute resolution boutique has a strong focus on large, complex and often cross-border cases, particularly in Latin America. In this regard, practice head Hermes Marangos¬†is the go-to expert, as one of the pioneers on complex matters for the insurance and reinsurance industry in Latin America. ‚ÄėIntelligent, with an excellent knowledge of the field‚Äô, he offers the ability to ‚Äėthink outside the box and get inside the Latin American psyche‚Äô. The breadth of experience in the practice covers a wide range of sectors, including losses arising out of natural disasters and claims under D&O policies, but especially multi-jurisdictional disputes and large-scale infrastructure projects.¬†Julian Connerty¬†recently advised Gable Insurance on a potential claim against underwriting agency Morgan Law.

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