London Falling was a strip by writer Simon Spurrier and artist Lee Garbett which ran in 2000 AD progs 1491 to 1495. It concerned bogeymen from English folklore and myth running amok in modern day London.
The title is a play on The Clash's 1979 album London Calling.
One of the characters in the strip, Black Shuck, shares his name with the later, seemingly unrelated 2000 AD strip also called Black Shuck.