Pogust Goodhead Seeks Court Declaration to Retain Control of £36bn BHP Mariana Dam Litigation
Pogust Goodhead, the law firm leading what City AM describes as the largest group claim in UK legal history, has applied to court for a declaration that a notice purporting to terminate its retainer for the Mariana Dam litigation against BHP is legally invalid. The move follows a reported bid by Thomas Goodhead, the firm's ousted former chief executive and founder, to wrest control of the £36bn case from Pogust Goodhead, a firm at which he previously served as a director. The retainer dispute has turned the litigation into a two-front battle: claimants face BHP in the underlying proceedings while the firm handling their claims contests a challenge to its own mandate. The outcome of the retainer declaration will have direct consequences for how, and by whom, this landmark mass tort action is prosecuted.
Why this matters
A successful termination of Pogust Goodhead's retainer would destabilise the largest group claim in UK history at a critical litigation stage. The public dispute between a firm and its ousted founder over control of a £36bn mandate is highly unusual and signals the commercial and reputational stakes that attach to mega-litigation. Claimants' access to justice hangs on the resolution of what is, at its core, a contractual question about whether the retainer termination notice is valid.
On the Ground
The court declaration application activates contentious solicitor-client and retainer law, alongside group litigation management work. Disputes lawyers will be advising on the validity of retainer termination notices and the procedural steps for seeking declaratory relief. A trainee on this matter would be reviewing the retainer documentation, tracking the court listing for the declaration hearing, and preparing a chronology of the competing claims to firm control.
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“What are the legal grounds on which a firm can challenge a retainer termination notice, and what does the court look at when granting a declaration of that kind?”
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