a major problem with this issue in the UK is people who claim they were abused as children--by well known public figures--politicians--actors--entertainers etc. it can destroy such a persons life--career--reputation etc. even before the court case.
in the really controversial cases--there are NO "2 witnesses"--just an allegation from one person against another..and who's story do the courts believe ?
i knew of one case--although he was in no way famous.
this was 25 years ago the man accused was the care taker of an industrial complex. he and his wife had previously been foster parents to several kids. one of the kids--a girl--after a few years alleged the man had abused her whist she lived in his house
he denied it
who do you believe ?