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He is not trying to get the required document for free (are any of these things ever free ?) - this sort of thing appears not to be available in the UK so, on the face of it, he is stuck. It looks like the only hope here would be to get a library of certificates which hopefully might convince some that, in all likelihood (based on everything assembled), the answer is X. This is way short of what he was hoping to get which is something akin to the foreign example above.
Why he wants it is of course totally irrelevant. For example I usually am taken aback when being quite specific (precise description) asking for, say, a piece of wood at the timber merchants or something of a similar nature, and the sales assistant asks what it's for. I want a potato, either there is a potato available or not - it's up to me how I cook it and, presumably, how I want to cook it will not determine whether the potato is available. I don't hold it against the person, it just seems a pointless question.