continuing the despeerately unlikely suggestions:
14. I am sure that no referee took bungs - but Keith or any other Cooper might have found a use for them, though I'm scraping the barrel there..
04. I assume that Wiseman is too obvious and know of no Mr Sage or Mr Solomon. A Don might be learned, but not necessarily wise (some seem anything but!) whereas Wiley suggests cunning, not always with the wisest intent.
21. John would have to bring kit, watch, whistle etc, none of which help. When he got back home, he would need a Key, however. Could it be as simple as that?