Nottingham flyer
At the Nottingham concert, fliers were found which at first seemed to contain hidden text possibly relating to the world of Year Zero.
Careful inspection of the flyer itself revealed the following:
ORGAN DONORS KUTSKI DIGITAL ID ROOSTA MATT HANDY
However, this "hidden text" turned out to be left over from another flyer that had been printed at the same press, and as such, it in no way relates to the World of Year Zero.