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Wessen Jazrawi

Wessen plays a key role in both our competition and human rights & environmental practice areas. Providing access to justice for individuals and businesses – regardless of the practice area - lies at the cornerstone of her practice.


At Hausfeld, she has worked on some of the most well-known competition cases of recent years, including the MasterCard / Visa interchange fee litigation and the Marine Hose cartel.

Prior to joining Hausfeld, Wessen acted in two cases before the Competition Appeal Tribunal, including the first follow-on action to have reached trial in the UK, Enron Coal Services Limited v. English Welsh & Scottish Railway.


Because of the nature of her practice, she represents people and corporates, both on an individual or group basis. For example, she advised a group of international retailers in proceedings relating to multilateral interchange fees and represented a large group of multinational companies in a private damages action following the global Marine Hose cartel. 

Practice Areas

Competition Disputes

  • Acting for a group of multinational retailers in claims for unlawful interchange fees against Mastercard and VISA. These complex proceedings, which involved losses in 18 European jurisdictions and related proceedings in the High Court and in the Competition Appeal Tribunal, included the first preliminary issue hearing on applicable law in competition litigation disputes, a hearing at the Court of Appeal on the “relation back” rule and preparation for a Supreme Court hearing. 
  • Advising on a collective consumer claim, including related insurance and funding issues.
  • Represented a large group of multinational companies in a private damages action in relation to the global Marine Hose cartel.
  • Acted for Enron Coal Services Limited against English Welsh & Scottish Railway Limited, which was the first follow-on action to have reached trial in the UK. This included two hearings before the Court of Appeal and a full trial in the Competition Appeal Tribunal.
  • Acted for Rapture TV plc in its appeal against a decision by Ofcom before the Competition Appeal Tribunal. 

Human Rights and Envionmental Disputes

Wessen acted on a pro-bono basis for the majority of the cases below.

  • Acting for a group of farmers from the Copper Belt region of Zambia in pollution claims against UK-based mining company Vedanta Resources Limited and its Zambian subsidiary.
  • Acted for the claimant/appellant, ex-police officer Andrea Brown, in a pivotal costs case on the clarification of the Qualified One-Way Costs Shifting Rules.
  • Part of the legal team fighting to end #PeriodPoverty, working alongside Free Periods and the Red Box Project.
  • Assisted in the drafting of the Communication submitted on behalf of 16 youth petitioners to the UN Committee on the Rights of the Child, led by teenage activist Greta Thunberg.
  • Acted in a high-profile judicial review on behalf of Avaaz relating to the Murdoch family’s bid for Sky and the question of whether Sky would remain fit and proper to hold a broadcasting license if 100% owned by 21st Century Fox.
  • Acted for the former employees of a mercury thermometer factory in India owned by Unilever plc who had suffered mercury contamination, ultimately obtaining a settlement for them.
  • Exploring with a number of campaigning and parent groups, including Mums for Lungs, the possibility of bringing an action against the government on behalf of a group of children who have been affected by poor air quality in London.

What Others Say

The Legal 500

Wessen is listed as a 'key lawyer'. - Competition Litigation, 2021 

Wessen Jazrawi is listed as a 'key lawyer' and particularly noted for her experience representing vulnerable individuals and acting in personal injury claims. - Civil Liberties and Human Rights, 2021 

Legal 500 confirmed that Wessen Jazrawi comes ‘highly recommended’. - Competition Litigation, 2020.

The Law Society

The Hausfeld Human Rights team, of which Wessen was a key part, was shortlisted for The Law Society Legal Excellence Awards 2019 in the 'Access to Justice' category for its work on the ‘Hausfeld, Free Periods and Red Box Project’.

Super Lawyers

Super Lawyers recognised Wessen as a Rising Star for Antitrust and Competition Litigation in London – 2015.


LLM in International Human Rights Law, University of Essex
Legal Practice Course, Oxford Institute of Legal Practice
LLB in Law, University of Kent

Bar Admissions

Solicitor, England and Wales, 2008

Affiliations & Memberships

Member - Law Society Competition Section

News & Press

Journalist of the specialist legal press, including GCR and Law360, often seek Wessen’s comments on key judgments. Recent news and press that Wessen has contributed to can be found in the respective sections below. In other news:

"Unpaid intern takes on British fashion house Alexander McQueen", The Guardian 17 February 2014.

"Unpaid Intern Sues Alexander McQueen, Has The Culture of Working For Free Changed?" International Business Times 17 February 2014.


Wessen regularly authors opinion pieces on key judgments or legal developments, accessible via the ‘Articles’ section below.

Related News & Press