That's kind of interesting...
Well, within the Nasuverse, the DAA as an organization are planning some kind of Doomsday Ritual in Alsbury; that's expected to come to fruition in like a decade or two.
Time of great need, right?
And if Shirou gets into the Enforcer/Burial Agency scene, then he'd probably find out what's commonly known about it.
Shirou+Saber (+Rin) stop the vampires from starting up Notes from inside Britain, huh, maybe?