A recent judgment of the Technology and Construction Court in the Westmill Landfill Group Litigation ordered the claimants to disclose to the defendant their after-the-event (ATE) insurance policy, which they had purchased to cover any potential costs liability in the proceedings. While the court was keen to emphasize that the decision was reached on its own facts, some will see this as a further significant inroad into the traditional principle that insurance policies are private and not disclosable in legal proceedings.