Harcus Parker

Harcus Parker is a leading litigation boutique with a specialist focus on collective actions and complex multi-party disputes. Since its foundation in 2019 by Damon Parker, the firm has rapidly grown in scale and prominence, and is now recognised as one of the UK’s foremost collective redress practices. With a team of over 50 professionals and hundreds of millions of pounds in third-party funding secured, the firm is well placed to manage some of the most complex and high-value litigation before the English courts.

From the Competition Appeal Tribunal and the Employment Tribunal to the High Court and formal Group Litigation Orders (GLOs), Harcus Parker has established a full-service offering in group and collective actions. The firm’s reputation is built on its willingness to work at risk in the right cases and on its deep links to the litigation funding and insurance markets.

Harcus Parker advises on a wide range of group litigation across multiple sectors. Its areas of focus include:

• Financial services and shareholder actions: The firm’s roots lie in financial litigation, having acted in the first GLO for financial services and one of the UK's largest shareholder actions.
• Consumer group claims: Representing large groups of claimants affected by misleading or unfair corporate behaviour.
• Equal pay litigation: Acting for thousands of workers in some of the UK’s most high-profile equal pay claims.
• Competition law: Pursuing collective redress through the Competition Appeal Tribunal, including abuse of dominance and cartel claims.
• Data and privacy: Representing claimants in data breach and misuse of personal information claims.

The firm continues to act in a mixture of confidential and public matters, including high-profile group litigation against major financial institutions, retailers, and multinational corporations.

Background and History:

Harcus Parker was founded by Damon Parker, formerly Head of Litigation at Harcus Sinclair LLP, where he and his team built a market-leading group and commercial litigation practice. They played a key role in shaping the UK collective redress landscape, not only by securing landmark outcomes but also by pioneering the use of litigation funding to widen access to justice.

Since 2019, Harcus Parker has expanded its capabilities significantly, with dedicated teams now handling disputes involving competition, data protection and cyber, and media and communications. While collective actions remain the core of the practice, the firm continues to develop broader commercial litigation capabilities in response to an evolving legal landscape.

Distinctive Features:

• A sole focus on contentious matters, with deep experience across all stages of litigation.
• A strong reputation for running complex, high-value claims on a contingency basis.
• Recognised leadership in the UK’s group litigation field, having shaped legal precedent and collective redress frameworks.

Harcus Parker is based in London and operates solely in England and Wales.