Palantir is suing the London mayor's office over a blocked £50 million Metropolitan Police contract. The company argues in the High Court that the decision was improperly based on its values and ethics. The mayor's office previously cited a failure to conduct an open competition for the deal.

Separately, a UK parliamentary committee urged the government to terminate Palantir's NHS Federated Data Platform contract. Lawmakers recommended the government exercise a contract break clause in February 2027. The committee cited public mistrust and doubts regarding the platform's effectiveness.