This is a very sensitive subject and one that needs to be dealt with and organised correctly.
I cannot speak on the remit of that "quango" as you did not give us a link to follow on it but all I know is that in order to find as many of the "dodgy" characters out there as we can and put a watch on them in order to protect children we sometimes have to give up a bit of our own freedom.
It is my experience that likely child offenders are very good at hiding amongst ordinary and decent people and because of this quality it is not easy to keep track on them.
As far as I see it, anything that makes this job easier for the authorities the better, and if this means that some innocent people are vetted then so be it.
As I usually say in situations like these......."Anyone who is innocent has nothing to fear from such enquiries !"