You keep asking this, what would you consider evidence, the only thing I could imagine would provide evidence to you is actually hearing him state something and then seeing what happens, so, why don't you buy one of his predictions and then see if he is right? All legacy predictions and events observed from the internet can be called false, we have no way of knowing it is legit.
BBC or C4 made a short doc on him years ago because of his accuracy, they don't make docs about people who are no better than the 5 day meteorology standard prediction spell, the fact he does it months ahead is exceptional ergo they thought it worth a documentary.
So that will be a no then, this habit of yours is becoming quite severe.

Knowing full well the only possible way that can be proved is to get the betting slips which is a ludicrous request and shows what you are about.