Ranking tables

Group Litigation: Claimant | UK

UK-wide

The law firms and lawyers ranked below represent groups of claimants in litigation. This section covers representative actions, Group Litigation Orders and collective actions before the Competition Appeal Tribunal. The types of matters involved include but are not limited to environmental, product liability, personal injury, financial mis-selling and professional negligence claims.

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1

Band 1

  1. Hausfeld & Co LLP
    1
    Hausfeld & Co LLP
    Group Litigation: Claimant
    2025 | Band 1 | 3 Years Ranked
    Hausfeld is noted for its focus on claimant representation, particularly in cases concerning competition law and the banking sector. Its team of highly experienced litigators is known for representing large groups of claimants in collective actions, with particular strength in handling substantial opt-out claims.
  2. Leigh Day
    1
    Leigh Day
    Group Litigation: Claimant
    2025 | Band 1 | 3 Years Ranked
    Leigh Day acted for Professor Carolyn Roberts as proposed class representative in an opt-out collective claim against six water and sewage companies who are alleged to have abused their dominant position and overcharged millions of customers. This is the first environmental competition collective proceeding in the Competition Appeal Tribunal.
2

Band 2

  1. Milberg London LLP
    2
    Milberg London LLP
    Group Litigation: Claimant
    2025 | Band 2 | 3 Years Ranked
    Milberg acted for Vicki Shadbolt as class representative for over 14 million UK consumers in an opt-out collective action against Valve. The claim alleges that Valve abused its dominant position by enforcing anti-competitive price parity clauses and charging excessive pricing for games and in-game content.
  2. Pogust Goodhead
    2
    Pogust Goodhead
    Group Litigation: Claimant
    2025 | Band 2 | 3 Years Ranked
    Pogust Goodhead is a specialist group litigation firm handling major claims in the UK as well as globally. The team is regularly appointed on group actions relating to environmental damage and injury caused by faulty medical devices, along with claims regarding vehicle emissions, data breaches and employment rights.
  3. 2
    Stewarts
    Group Litigation: Claimant
    2025 | Band 2 | 3 Years Ranked
    Stewarts acted for 47 institutional investors in a securities group action against Petrofac. The claims are bought under S90A of FSMA for misleading statements in information published by the company to the market, ultimately leading to shareholder losses.
3

Band 3

  1. Edwin Coe LLP
    3
    Edwin Coe LLP
    Group Litigation: Claimant
    2025 | Band 3 | 2 Years Ranked
    Edwin Coe is a well-established firm in the group action space acting on the claimant side. The team has expertise handling cases covering a variety of topics, including competition, financial services, fraud and public law.
  2. Fox Williams LLP
    3
    Fox Williams LLP
    Group Litigation: Claimant
    2025 | Band 3 | 1 Years Ranked
    Fox Williams acted for a number of high-profile institutional investors in a securities litigation group action against Tesco under S90A of FSMA. It is alleged that Tesco issued false and misleading statements in its trading profit and profit margins that resulted in losses to its shareholders.
  3. Hugh James
    3
    Hugh James
    Group Litigation: Claimant
    2025 | Band 3 | 3 Years Ranked
    Hugh James is known for its expertise in product liability, personal injury and environmental litigation. It has notable experience handling group claims related to these areas, including collective actions concerning faulty medical devices and industrial disease.
  4. Humphries Kerstetter LLP
    3
    Humphries Kerstetter LLP
    Group Litigation: Claimant
    2025 | Band 3 | 1 Years Ranked
    Humphries Kerstetter is a specialist litigation boutique. It demonstrates particular expertise in competition collective proceedings before the Competition Appeal Tribunal with a key role in the interchange fees litigation. The team also advises on group litigation claims arising out of fraud and failed investment schemes.
  5. Irwin Mitchell
    3
    Irwin Mitchell
    Group Litigation: Claimant
    2025 | Band 3 | 3 Years Ranked
    Irwin Mitchell has a national reputation for its expertise in personal injury and product liability claims brought on behalf of large claimant groups. It can also advise on collective action concerning environmental concerns and aviation disasters.
  6. Mishcon de Reya LLP
    3
    Mishcon de Reya LLP
    Group Litigation: Claimant
    2025 | Band 3 | 1 Years Ranked
    Mishcon de Reya's team demonstrates a broad group action practice advising individual and institutional claimant groups across competition, insurance and securities collective actions. It regularly features before the Competition Appeal Tribunal and the High Court in opt-in and opt-out group actions.
  7. Penningtons Manches Cooper LLP
    3
    Penningtons Manches Cooper LLP
    Group Litigation: Claimant
    2025 | Band 3 | 2 Years Ranked
    The group actions team at Penningtons Manches Cooper frequently represents clients in high-value litigation. It has expertise in insurance matters in addition to professional negligence claims, particularly against lawyers and architects.
  8. Scott+Scott UK LLP
    3
    Scott+Scott UK LLP
    Group Litigation: Claimant
    2025 | Band 3 | 1 Years Ranked
    Scott+Scott UK is widely recognised in the market for its role in high-profile collective proceedings in the Competition Appeal Tribunal. Its client base includes individuals and businesses that have suffered loss due to anticompetitive behaviour and abuse of dominance.
  9. Harcus Parker
    Group Litigation: Claimant
    2025 | Band 3
  10. KP Law
    Group Litigation: Claimant
    2025 | Band 3