Mark Wassouf > Chambers of Ewan McQuater QC and Adrian Beltrami QC > London, England > Lawyer Profile

Chambers of Ewan McQuater QC and Adrian Beltrami QC
3 Verulam Buildings
Mark Wassouf photo


Mark Wassouf has a broad commercial and public international law practice.

He is frequently instructed as counsel on investment treaty and commercial arbitrations in a number of sectors, including banking, agriculture, oil and gas and telecommunications, as well as on arbitration-related applications in the English courts.

Mark also has significant experience acting as counsel in cases and matters involving complex questions of public international law and has advised governments, NGOs and individuals on sovereign treaty obligations.


Mark qualified as a solicitor with Freshfield Bruckhaus Deringer in 2011, where he was a member of the arbitration and international team. He left Freshfields in mid-2013 to transfer to the bar and now practices as a barrister at 3 Verulam Buildings in London.



Fluent Arabic and has a working knowledge of French

Lawyer Rankings

London Bar > Energy

(Rising stars) Ranked: Tier 1

Mark Wassouf3 Verulam BuildingsAn extremely focused and accomplished advocate with a significant energy practice in the Middle East.

3 Verulam Buildings is ‘evidently a strong set with breadth and depth of quality‘ and clients report that its members are ‘very user-friendly‘. The set is known for its expertise in banking and commercial litigation but its members also appear frequently in court and arbitration cases concerning oil fields, mines and technical issues related to the operation of oil and gas pipelines. New silks Christopher Harris QC, who represented the claimant in Forum International v OOS International which concerned high-value oil exploration assets in Brazil, and Nicholas Craig QC are among the set’s most active members in energy disputes. Juniors Paul Wee, who appeared in English enforcement proceedings concerning the $50bn arbitral awards obtained by former shareholders of Yukos under the Energy Charter Treaty, and Jane Davies Evans are highly recommended; Mark Wassouf is a rising star in chambers. ‘The clerks are good – responsive, approachable and keen to help‘, remarks one client.

London Bar > Public international law

(Leading Juniors) Ranked: Tier 3

Mark Wassouf3 Verulam BuildingsMark has an extensive knowledge of the law in relation to investment arbitration and is easy to work with – his drafting skills are first class.

3 Verulam Buildings is ‘increasingly developing genuine expertise and depth in Public International Law at all levels‘ and is considered by some to be a ‘premier Investor State Arbitration chambers’. Christopher Harris QC is one of the set’s best-known silks in this area, and more in recent years, he has been joined by several ex-solicitors with a strong track background in this area, including Tariq Baloch, Mark Wassouf, Paul Wee, and Cameron Miles. Recent highlights include The Nova Group BV v Romania, where Harris and Miles are representing Nova Group.

London Bar > International arbitration: counsel

(Leading Juniors) Ranked: Tier 2

Mark Wassouf3 Verulam BuildingsHe has real expertise in the law of international arbitration and a focus on work in the Middle East, for which he is particularly well qualified as an Arabic speaker.

3 Verulam Buildings‘ ‘depth in the field of arbitration has grown consistently over the past few years,’ and ‘they are catching up with the traditional top sets for general commercial arbitration‘. In recent years the set has made astute recruits from among the ranks of experienced arbitration solicitors, and this has started to pay dividends with high-profile instructions. Notable highlights include KLS Energy Lanka v Democratic Socialist Republic of Sri Lanka, an ICSID claim in which Christopher Harris QC and Mark Wassouf are representing KLS Energy Lanka. Ewan McQuater QC and Paul Wee are also representing TC Ziraat Bank in the epic Sonera Holding v Cukurova Holding LCIA arbitration. In recent news, Rajesh Pillai took silk in 2020.

Middle East: The English Bar > Commercial

(Leading juniors) Ranked: Tier 2

Mark Wassouf3 Verulam BuildingsHe is highly intelligent with strong experience in commercial litigation and arbitration. Also, he is an excellent team-player who works well with experts and other lawyers.