Full Breakdown
Legal Standoff Over Palantir Deal Prompts Search of London Mayor’s Communications
9/4/2026, 11:22:43 AM
Core Event
The High Court has been told that London Mayor Sadiq Khan and more than a dozen officials from the Mayor’s Office for Policing and Crime (MOPAC) will have their texts, emails, WhatsApp and Microsoft Teams messages examined for relevance to a lawsuit filed by U.S. technology firm Palantir. The company is suing MOPAC after the mayor blocked a proposed two-year, £50 million contract that would have allowed the Metropolitan Police to use Palantir’s artificial-intelligence tools for criminal-investigation analysis.
Background & Context
The office also raised concerns about Palantir’s values and ethics, though it said those concerns could not legally affect the decision. Palantir, which provides AI services to the Israeli military and the former U.S. administration’s immigration enforcement, argued that MOPAC’s veto was unlawful because it improperly considered the firm’s ethics.
Data & Statistics
- The contested contract was valued at approximately £50 million.
- Both parties have set aside more than £8 million in legal costs, according to court-approved budgets.
- Palantir estimates that complying with MOPAC’s request for its internal documents would involve reviewing about 150,000 files, which the company describes as a “fishing expedition.”
Official Statements & Responses
MOPAC’s lawyer Joseph Barrett KC explained that adding the mayor as a “custodian” of communications was a pragmatic decision after Palantir persisted in its request. He noted that the mayor’s senior role and the likelihood that relevant documents were already held by other officials made the inclusion initially seem unnecessary.
Palantir’s court filings claim the mayor’s office “put politics above public safety” and seek a declaration that MOPAC acted unlawfully, an order to quash the veto, and a directive that the contract be awarded to Palantir.
What’s Next
A full hearing on the case is scheduled for January next year, during which the court will determine the scope of the communication searches and consider Palantir’s claim for a declaration of unlawful conduct.
