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Rupert Lewis

Rupert Lewis

Partner, Head of Banking Litigation

Rupert heads the award-winning Banking Litigation practice in the UK. 



Rupert heads the award-winning Banking Litigation practice in the UK and specialises in advising banks and other financial institutions on a wide range of contentious issues.          

He has led many high-profile cases, including working with a client on one of the largest banking disputes that has been brought before the Commercial Court in London.

He leads the Banking Litigation team which is tier one ranked in both Legal 500 and Chambers & Partners. Rupert is himself ranked as a "leading individual" in Legal 500 UK, 2020 as well as a "Dispute Resolution Star" in Benchmark Litigation Europe, 2020 and is described as being "in a class of his own - robust under pressure and great in high-value banking claims" and '‘commercially astute, excellent with clients and inspires loyalty in his team’'(Legal 500 UK, 2017) and "has shown that he can handle even the most challenging cases superbly" (Legal 500 UK, 2018) and "has established himself as one of the foremost banking litigators in the City; he has excellent industry knowledge and tactical judgement. In addition, he is greatly valued by his clients for his communication and matter management skills." (Legal 500 UK, 2020).

Rupert’s expertise includes advising clients on mis-selling claims (in relation to a wide variety of investment products, including complex derivatives), fraud claims, banking confidentiality, contractual disputes, jurisdictional disputes and professional negligence claims. Many of the matters Rupert has worked on involve parallel regulatory and criminal investigations or proceedings.

He has first-hand knowledge of the inner workings of financial institutions having spent over a year in-house, including a senior secondment to the litigation team of a major UK bank.

Rupert’s experience includes advising:

  • Societe Generale in relation to a US$1.5 billion claim by the Libyan Investment Authority in relation to a series of derivative trades. The claim was successfully settled
  • one of the world's largest private equity houses in relation to a dispute arising out of deal worth USD 13.5 billion
  • Lloyds Banking Group in relation to a large number of interest rate swap disputes
  • a large, international bank in relation to claims arising from breaches of sanctions
  • Credit Suisse in successfully defending against a US$30 million mis-selling claim brought in the Commercial Court in London by an ultra–high net worth individual in connection with structured notes
  • a large private bank in relation to a series of mis-selling claims arising from a life assurance structured investment product
  • a major commercial bank in relation to claims arising out of foreign exchange derivative transactions
  • a major insurance company in relation to claims arising out of broker managed funds
  • Bernie Ecclestone (CEO of the Formula One Group) in relation to a series of disputes arising in connection with bribery allegations





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23 April 2021

Herbert Smith Freehills lawyers Rupert Lewis and Maura McIntosh talk witness statements, ahead of London International Disputes Week 2021