I just a read a story in the National Post.
The person that the Mime thought he was, is not.
The Mime I.D. the man, but the brother of the man told the press: He is not my brother, I just saw my brother yesterday.
They are checking out other people who "claim" they know who he is.
I don't know what happened to him, but if depends on what "mental state" he was in before some Trauma may have be fallen him.
That is just a guess.
Also, the reason that the tags from his clothes may have been removed is that someone does not want him identified through his clothing.
Tags, especially in Europe can I.D. country and region.
Also the possibility, that someone was caring for him. Could not anymore or would not anymore, dropped him off in a country that would and could care for him.
Or he may have been staying with a person in the U.K., and that person has abandonded him.
That would cause a "vulnerable" person trauma, big time.
I hate to think that.....but it is a possibility.