The problem I have with uu being Lord English is that the universe that is created from "Earth's Universe" is prophetically free of Lord English' terror, the cherubs have to be from the new universe, the one that is free of LE's terror. Thus, Lord English could not exist in the Cherub's universe, at least not in a conventional existential way. For reference, Squiddles universe > Troll Universe >Earth Universe >Cherub universe(?) Also, didn't we all come to the conclusion that Doc Scratch became Lord English and that was it?
Spoiler
See, her idea and yours compliment each other. Think of time as being cyclical; her idea leads up to yours, which then wraps around itself and winds up meeting hers at the beginning of it. uu becomes LE in his universe, is the one who makes the alpha-trolls universe (the one where the condense dies as a kid), but doesn't go away, and just keeps appearing in each iteration of the game(s). Then all the universes work together to undo their creator. Or who knows.