Two weeks ago, Dr Thompson found that the door to his home had been smashed in, his house searched, and his computer and many of his files seized. The same happened in his office at Reading University. The raids were organised by Thames Valley Police. Officers asserted they had information that Dr Thompson was in possession of child pornography and obtained a search warrant from a local magistrate before entering his premises. Unfortunately, the police did not tell the magistrate that Dr Thompson was an expert witness in a myriad of child sex cases.