And you are also within your rights to complain to management. In the
> Nigel Evans case, the "victims" mostly didn't seem that bothered about
> what happened but the CPS wanted them to give evidence to show a pattern
> of behaviour and make the most important alleged rape seem more plausible.
The CPS has no business looking for "patterns of behaviour". That's the police's job when looking who might be a likely suspect. "Patterns of behaviour" are not illegal. Acts are. And they've no business, either, trying to make an act "plausible". They have to show, first off, that a crime has occurred. If they can't unequivocally do that, then there is no case to answer.
Try reading "To kill a mockingbird". The defendant got hanged, IIRC, in that, because no one was interested in the fact that the "victim" was still a virgin.