DARKER AND OTHERS V CHIEF CONSTABLE OF THE WEST MIDLANDS [2000] UKHL 44 This case concerned the immunity of a police officer when giving evidence. The Claimants had faced trial in criminal proceedings, but in 1993 the trial was stayed for an abuse of process. The police had failed to give disclosure despite court orders, and the main prosecution witness failed to cooperate. The judge stayed the charges permanently and the Claimants were discharged. Full report here.