The Netta Fornario thing. Wasn't there a case not all that long ago, of another New Agey type going up into the Scottish Highlands to mediate and commune with the Numinious, maybe in the same general area, and being found some time later having died of exposure? As I recall, she was involved in that rather loopy Breatharian movement, so anorexia could have contributed to her demise.
Also... Clive Bloom devotes four pages to Mysterious London, and the concept of the city having its mysterious, occult, gothic, shadow side. He explores this via literary references spanning a couple of centuries and these are copiously sprinkled throughout, so as to prove the contention.
And he doesn't mention Ben Aaronovich's take on this idea, even once? The Rivers of London series? Ah well, maybe these are too recent and too popular to count as English Literature...