Group Litigation

Group Litigation

The mass provision of goods and services, the proliferation of online delivery channels and the advance of big data make commercial mistakes on an industrial scale ever more likely. Damage to thousands or even millions of people means group litigation is on the rise.

Our team of specialist litigators knows how to develop and pursue group litigation procedures of all types, including GLOs, representative actions, test cases, and competition follow-on litigation. We have a particular reputation for winning claims connected with financial products, data issues and regulatory breaches. The size and breadth of our overall litigation practice, allied to the depth of our relationships with funders, brokers and After The Event (ATE) insurers means that we can negotiate and structure funding for even the most complex group action. Our connections with leading chambers also give us access to the finest procedural minds: a huge benefit to those trying to develop and launch novel and complex claims. Our clients range from retail investors and SMEs, to high net worth individuals and institutions, all of whom for their own reasons appreciate the benefits of litigating as part of a group, often backed by litigation funding and ATE insurance.

  • Initial case assessment and advice delivered in a commercial manner
  • Assistance in team formation and obtaining counsel's advice for funding
  • Expertise in the evaluation and negotiation of funding structures and ATE insurance policies
  • Guidance on book building processes and activities
  • Group litigation conduct and management
  • Settlement of complex group proceedings

Live Group Actions


Our Competition Team has launched an opt-out collective action, Justin Le Patourel v BT Group Limited, in the Competition Appeal Tribunal, which seeks to represent over 2 million of BT's most loyal customers. The action relates to consumers who were overcharged for their standalone residential landlines (home phones) from at least 1 October 2015 and represents a claim of nearly £600 million.

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Hiscox Action Group

We are looking into the claims of the Hiscox Action Group, a collective of Hiscox clients whose coronavirus-related business interruptions claims were rejected. The group now consists of hundreds of policyholders.

Ingenious Media

Acting for over 100 investors in various film finance partnerships structured by Ingenious Media and others.


We are pursuing a class action professional negligence/breach of contract claim on behalf of approximately 40 individuals against a company that introduced a group of high net worth individuals to highly publicised film partnership tax schemes.

Shareholder Compensations Claims

We continue to help institutional shareholders obtain compensation for losses they have suffered through investments in UK listed companies which have misled the market.

The European Trucks Cartel

We are advising a number of household name retailers, including Dixons Carphone and Sainsbury's in relation to their claims against the European Trucks Cartelists.

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Royal Mail

Mishcon are leading the largest tax group litigation the UK has ever seen. We act for hundreds of tax-payers seeking to recover taxes which have been overpaid to Royal Mail.

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