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Jonathan Warne

Jonathan Warne

Partner

CMS Cameron McKenna Nabarro Olswang LLP
Cannon Place
78 Cannon Street
London
EC4N 6AF
United Kingdom
Languages English

Jonathan heads the Litigation and Arbitration team. He has over 30 years of experience handling both domestic and cross-border disputes including financial services, company commercial, fraud and insolvency related litigation. He frequently deals with multi-party jurisdictional issues and has played a central role in developing the firm’s Singapore office. He has been involved in a number of the leading disputes arising out of the last financial crisis including Lehman Brothers and Kaupthing.

He has expertise in the developing regulatory arena. This includes experience of competition disputes and investigations generally. He has been involved in many of the leading pension litigation cases.

Jonathan has worked extensively with General Counsel and has led a GC thought leadership initiative over a number of years. To date, five reports have been published: “From In-House Lawyer to Business Counsel”, “General Counsel: Vague about Value?”, “The Influential GC”, “Room to Grow? How to manage and engage talent” and the most recent, “General Counsel: reaching new heights?”. The work has been commended in the Financial Times’ Innovation Awards for client service. 

Jonathan is named in the Legal 500 Hall of Fame.

He is also a Council Member of the Inter Pacific Bar Association.

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"He is brilliant when it comes to advising clients on strategy."

Chambers, 2021

"Jonathan is very commercial and to the point, and has a good rapport with clients and his team."

Chambers, 2021

"An expert litigator and great tactician, who always gives extremely valuable, strategic advice."

Legal 500, 2020

"an extremely good litigator" and also remarks on his "exceptional client skills", saying that "his tact, diplomacy and approachability are second to none".

Chambers 2018

"a particularly impressive litigator", "a skilled strategist and has brilliant client skills".

Legal 500, 2017

“Able and tenacious”

Chamber and Partners

“Shrewd and has excellent client skills”

Legal 500

“He’s down to earth and creates a very good empathy with the clients so they feel, early on, that he is on their side”

“Very good for big disputes”

Legal 500

Education

  • 1984 – LL.B. Reading University  
  • 1985 – The Law Society’s Final Examination, Lancaster Gate, London
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Memberships

  • Commercial Litigators Forum
  • London Court of International Arbitration
  • Council Member of the Inter Pacific Bar Association
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Publications

  • Jonathan has worked extensively with General Counsel and has led a GC thought leadership initiative over a number of years.
  • To date, five reports have been published: “From In-House Lawyer to Business Counsel”, “General Counsel: Vague about Value?”, “The Influential GC”, “Room to Grow? How to manage and engage talent” and the most recent, “General Counsel: reaching new heights?”.
  • The work has been commended in the Financial Times’ Innovation Awards for client service.
  • He is general editor of Bloomsbury’s text on International Commercial Dispute Resolution.
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Expertise

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14 September 2020
Gen­er­al Coun­sel re­port: Cre­at­ing con­nec­tions, bridging gaps
The next re­port in our Gen­er­al Coun­sel series ‘Cre­at­ing con­nec­tions, bridging gaps’, pro­duced in part­ner­ship with ECLA, is now avail­able to down­load.  Based on the real-life ex­per­i­ences of 18 of...
05 March 2020
Coronavir­us: key in­sur­ance con­sid­er­a­tions
As a res­ult of the con­tin­ued glob­al rise in con­firmed cases of Cov­id-19 (Coronavir­us) and con­sequent travel and quar­ant­ine re­stric­tions, un­der­stand­ably con­cerned in­di­vidu­als and busi­nesses are as­sess­ing...
14 September 2020
New CMS re­port aims to em­power GCs with prac­tic­al in­sights and tools
In­ter­na­tion­al law firm CMS is pleased to an­nounce the launch of “Cre­at­ing con­nec­tions and bridging gaps”, the latest re­port in its Gen­er­al Coun­sel (GC) series, pro­duced in part­ner­ship with the European...
22 June 2020
The Lat­in Amer­ic­an Gen­er­al Coun­sel
The first CMS Gen­er­al Coun­sel re­port in the Lat­in Amer­ica re­gion, “The Lat­in Amer­ic­an GC: Rising to the chal­lenge”, ex­plores the de­vel­op­ment of the Gen­er­al Coun­sel role and how the world in which...
03 June 2020
Gen­er­al Coun­sel Re­port: reach­ing new heights?
In this Gen­er­al Coun­sel (GC) thought lead­er­ship re­port we fo­cus on a num­ber of im­port­ant mat­ters that re­late to the role of Gen­er­al Coun­sel (GC). In many senses it is a ret­ro­spect­ive com­ment­ary on the...
28 July 2016
Gen­er­al Coun­sel ser­vices
Gen­er­al Coun­sel Ini­ti­at­ive As Gen­er­al Coun­sel, you need to strike a bal­ance between your pro­fes­sion­al ob­lig­a­tions and com­mer­cial re­spons­ib­il­it­ies to your em­ploy­er. This is why CMS have been work­ing in...
13 December 2015
GEN­ER­AL COUN­SEL RE­PORT:Room to grow?
In our Room to Grow Gen­er­al Coun­sel re­port we thought we would look, by way of  con­trast, at one of the biggest man­age­ment chal­lenges fa­cing GCs who have been suc­cess­ful in those things: how to en­gage...