Child rapist walks from court in 'exceptional case' He raped a boy who was four years younger than him when he was teenager Updated Alistair Frederick outside Liverpool Crown Court. (Image: Liverpool Echo) Get our Knowsley newsletter for the best stories, photos, videos and opinionInvalid EmailSomething went wrong, please try again later. Sign up now When you subscribe we will use the information you provide to send you these newsletters. Sometimes they’ll include recommendations for other related newsletters or services we offer. OurPrivacy Noticeexplains more about how we use your data, and your rights. You can unsubscribe at any time.