So, I'm doing this What If as a recharge for myself. If it's not your thing, that's cool, mostly getting it out of my brain.
Taking major inspiration from Changeling: The Dreaming with a side helping of the series Lost Girl.
Elevator Pitch: The fae are real, but not hiding in some other dimension. They've been around for since before recorded history, they've just gotten better at hiding. The previous King of London just passed with no designated heir, destabilizing things for everyone and complicating the already complicated lives of London's supernatural denizens.
Basic Concept: The initial action revolves around the Old Bell Tavern on Fleet Street, the former King's favorite pub and a fae freehold (secret gathering place with some innate magic). It's currently managed and protected by Tereza Rozanov, duly appointed as a minor noble by the former King, not that she ever uses the title.