Question Author
Thankyou to all of your for your thoughtful, reasoned and helpful responses. I wanted to offer some reassurance and give some friendly help to my colleague but was a little freaked out when he blurted the persons' name out, being someone I have known most of my life. I will not be taking it further, except to say, that if he wishes to talk about it with me again, he may be better advised to get legal or police advice, although both are unlikely to be able to assist, in any case. I had found it a hard one to reconcile with my own conscience, as would hate to think that other potential victims may be holding back and that it seems this man is likely to get away scot-free. But I suppose it has to be weighed up against the realistic fact that I don't know enough (and certainly don't want to know anymore!)about the alleged offences, in any case. Thanks again all, for your responses.