Sir Robert Buckland calls for costs provisions to be used against AI 'slop' submissions flooding courts, warning that cheap production conceals high justice-system costs
Sir Robert Buckland, the former Lord Chancellor and Justice Secretary, delivered a keynote at the Costs Law Reports Annual Conference at Lincoln's Inn on 24 September 2026, calling for courts to make greater use of existing costs conduct provisions to address what he described as a 'tsunami of AI slop' hitting the civil justice system. AI slop is a colloquial term for machine-generated legal submissions that are inaccurate, verbose, and of little practical assistance to courts. Buckland argued that the central misconception driving the problem is the conflation of production cost with justice-system cost: while an AI tool may generate a 50-page document in seconds at near-zero cost, someone must still read it, verify the authorities, answer it, and allow a judge to identify what the case is actually about. He contended that the CPR 44 conduct provisions, under which courts may consider whether it was reasonable to raise or pursue an issue and the manner in which proceedings have been conducted, are underused tools for penalising submissions that waste judicial time. Buckland also addressed the aftermath of the Supreme Court's decision in PACCAR, describing how it placed the enforceability of significant numbers of litigation funding agreements in doubt by concluding that certain agreements fell within the statutory definition of a damages-based agreement, with particular impact on collective proceedings that depend on third-party capital. He noted a personal interest as a member of the advisory board of BSV Claims Limited, the class representative in an ongoing Competition Appeal Tribunal claim involving alleged anti-competitive conduct by cryptocurrency companies.
Why this matters
The speech identifies a structural problem with the early adoption of generative AI in legal proceedings: the asymmetry between the cost of producing material and the cost of processing it through the justice system. Courts are already beginning to develop responses, ranging from judicial warnings to costs sanctions, but Buckland's argument is that the existing costs framework is sufficient if used proactively rather than retrospectively. The PACCAR reference is a reminder that the litigation funding market, already under regulatory scrutiny, faces ongoing structural uncertainty that directly affects the viability of collective actions in the Competition Appeal Tribunal.
On the Ground
Litigation and costs lawyers need to track both the AI conduct risk and the funding landscape simultaneously. On AI, the practical instruction is that parties submitting AI-assisted material need robust human review and verification processes, or risk a costs application from opponents who have spent time unpicking inaccurate submissions. On funding, the PACCAR legacy means that litigation funders and class representatives need careful legal advice on the structure of their funding agreements to ensure enforceability. A trainee on a funded class action would assist with reviewing and categorising funding documentation, preparing skeleton argument research, and maintaining chronologies of any judicial commentary on the use of AI in the proceedings.
Interview prep
Question you might get
“How should a litigation team manage the professional risk of using AI-generated content in court submissions, and what costs exposure does irresponsible use create?”
Sign up free to see the full answer
A model answer you can lift into an interview — how to frame this story for a partner.
Sign up freeSources
My notes
saved