In 2000, according to support group
Falsely Accused Carers and Teachers (FACT), there was a 90% conviction rate for alleged child sex abusers, as compared to just 9% for cases of adult rape. In the UK, all the post-1970 court cases that are recognized as authorities on evidence of disposition "concern charges of sexual abuse of minors." In 1991, the House of Lords judgment in
Director of Public Prosecutions versus P (
D.P.P v P [1991] 2 A.C. 447) significantly lowered the barrier to admission of
similar fact evidence of disposition to commit a crime. This, combined with the police practice of "trawling" for child abuse victims using door-to-door interviews and the potential for monetary compensation, has created opportunities and incentive for false allegations to occur: Normally, an allegation of a criminal offense has to stand or fall on its own merits; if a witness accusing someone of sexual abuse was sufficiently credible, or could adduce supporting evidence, then an abuser would be convicted. Until 1991, multiple allegations against the same person could only be held to be mutually corroborating if there were "striking similarities" between the alleged crimes, indicating a criminal's "signature", a distinct
modus operandi. But the judgment removed this protection. In effect, the courts have accepted the idea of "corroboration by volume". In 2002, the
Home Affairs Select Committee (Fourth report, 2001/2), which dealt with police trawling practices and referred to the "enormous difficulties" faced by those accused of child sexual abuse, recommended that the requirement for similar fact evidence to be linked by "striking similarities" be restored in cases involving allegations of historical child abuse. However, this recommendation contradicted the Government White Paper Justice for All (2002), which proposed lowering the threshold for the admission of similar fact evidence still further. ==Effect on the child and the accused==