For Jb25: a hint on 39 down and a more general comment.
I was led down a rabbit hole on this. There is an actress first name Sabrina who shares a surname with a well-known Spanish golfer. This was not the right answer!!
Now to the correct answer. I was brought up in Wales and the song we sung at our ghastly school began. "Where ____ mouth opens wide, far steaming ship on every side, There stands our City and our School" It probably went on something like "Preserving privilege was our rule".
Hope this helps. Maskarade always has clever ideas but it is a right slog to finish.