I do have a clue what the OP did. The FL Rep stated here. The OP frauded accounts from his facebook friends (
) and changed email addresses and passwords. However the OP still deny's this and insists no password or email change ever occurred on his account.
Instead of knowing what the OP did can we know the evidence which was provided that supports PP claim?
Wouldn't that mean YOU have been used by your "friend" too? You are far better placed, as a victim, to make a complaint to the police on the matter. It's not the police that decide to prosecute in any case, but the Crown Prosecution service. This decision will be based on the evidence available, and may not even go ahead. A corporation, especially one based offshore, has a harder time than a fellow citizen in getting the police interested.
If you are so keen to throw your friend under the bus, report him yourself. I expect he already knows you are trying your best to get him run over by said omnibus, as even though he has been banned, he can still read this thread as a guest (you might want to lock your door at night if you don't already do so).
You could also report him to Facebook for making friend requests in "bad faith".
Do you know whether he utilised the recent bug in Facebook that could allow the leakage of private data about friends and friends of friends when downloading your own personal data archive?
This could be the first case of someone actually managing to use this bug to commit fraud, something Facebook have denied is a realistic risk, even though many disagree and believe that there have been some harvests of data from this exploit that will be used for future frauds.
Using stolen identities would be something that the police would take seriously, but they would need to be able to gather enough evidence to convince the CPS to spend taxpayers' money on a case. The regular police probably don't have the expertise for this, so it would have to be the Cyber crime unit, and they tend to concentrate on bigger cases, rather than the odd individual who got caught before any real damage was done.