Siddharth Dhar > Essex Court Chambers > London, England > Lawyer Profile

Essex Court Chambers
Siddharth Dhar photo


Siddharth acts as an advocate and advisor in substantial commercial litigation and arbitration disputes spanning the full breadth of Chambers’ work. In recent years, he has appeared in cases before the Court of Appeal, all divisions of the High Court, and in large value commercial and investment treaty arbitrations under a wide variety of institutional rules. He is regularly instructed as the sole advocate, or as part of a larger counsel team (whether that is with a Silk or leading a more junior barrister).  

Siddharth’s Court work in 2015 has included successfully acting for Iraq’s oil marketing organisation in the Court of Appeal, in a case which is now to be heard by the Supreme Court (Taurus v SOMO [2015] EWCA Civ 835); for a Nigerian oil interest defending a challenge to an arbitration award (C v D [2015] EWHC 2126); and for a large investor in the Ukrainian retail sector (Stockman v Arricano [2015] EWHC 2979). He is also presently acting for the Republic of Kazakhstan before the Commercial Court in resisting a jurisdictional challenge to an UNCITRAL award (Ruby Roz Agricol v Kazakhstan).  

Much of his recent work has involved arbitration and he has acted and advised on arbitrations under the ICC, ICSID, LCIA, SIAC, AAA and LMAA Rules and in ad-hoc arbitrations under the UNCITRAL Rules. He has been instructed on some of the largest commercial arbitration and investment treaty disputes, including the $38 billion ICC dispute between Botaş and NIGC.  Recent examples of his investment treaty work include acting for the investors in Agility v Pakistan (ICSID Case No. ARB/11/8) and BSG v Guinea (ICSID Case No. ARB/14/22); and for the state in Albaniabeg v Albania (ICSID Case No. ARB/14/26) and Hydro & Ors v Albania (ICSID Case No. Arb/15/28).


Called 2005, Middle Temple.


COMBAR; LCIA Young International Arbitrators Group.


Nottingham High School; Downing College, Cambridge University (2003 MA Hons, Double First); Harvard (2004 LLM); St Catherine’s College, Oxford (2006 BCL, Distinction).

Lawyer Rankings

London Bar > Energy

(Leading Juniors)Ranked: Tier 1

Siddharth DharEssex Court ChambersA great choice for high-value, complex work in the energy sector, he is a very experienced and capable advocate who uses his considerable charm to great effect.

Essex Court Chambers is ‘first-class in all departments, the barristers are universally first-rate and highly responsive’. One client describes it as ‘the Rolls-Royce of sets – everything purrs’. The set has a long-standing practice in high-value energy litigation, largely due to its market-leading practice in international commercial arbitration. Its members are frequently involved in international arbitrations and expert determinations in relation to the energy sector, often relating to state-owned entities. They are also in major Commercial Court matters, including challenges to awards under the Arbitration Act and enforcement proceedings. Prominent energy and natural resources specialist Paul Key KC represented Nigeria in its defence of an action in the Commercial Court to enforce a $9bn disputed debt arising out of an energy dispute. Siddharth Dhar is among the set’s vastly experienced juniors, and his recent work includes acting for oil trader Vitol in a Commercial Court claim for breach of contract for the supply of propane to a Ghanaian energy producer.

London Bar > International arbitration: counsel

(Leading Juniors)Ranked: Tier 1

Siddharth DharEssex Court ChambersVery thorough and quickly able to grasp even very technical issues. His arbitration expertise is phenomenal and working with him is always a pleasure as he is very user-friendly.