25a: Cheese roll, amaze astonishingly with last character included. m?s?a?e?l?.
I can only come up with "mistakenly", but can't see how it fits the clue....
Struggling even more than usual. Last three... 11a: Turns out royal's not involved in failures. e???t? 2d: Comedy Clubs putting on food. f?r?? (maybe farce) 20d: He's one to have english mild sans...