Things have turned around a bit then. If he is now keeping you dangling on a string and sending you emails entitled fraud and suchlike, then he is harassing and you are entitled to protection from harassment under the Protection from Harassment Act which is a police matter. You could now go to the police over his actions!
If he was going to do anything, he would have done it by now. He is playing games with you. Don’t get stressed out. Even if he goes to the police, (and just because he says he has, don’t necessarily believe it) I would be surprised in the extreme if they took it any further. This is not something that I would be losing sleep over.
It depends on how hard you want to get back at him. You could always email him and say that as this is clearly not going to go anywhere, he’s not reported it to the police and hence, you are going to close the matter and put it behind you and appreciate that if he would not email you about it again. If he does, then you have a much better harassment complaint to make. He either has to reported to the police or shut up. He cannot go rumbling on for ever like a thunderstorm.
Can I clarify anything for you?
Please rate the service positive. It’s an important part of the process by which experts get paid.
We can still exchange emails.