A traffic warden I know in my borough (Wandsworth), told me that Lambeth are skint and issue PCNs they know are in error in the hope that they aren't challenged. This PCN took it to another level, though.
I am still shell shocked that the permit is not in the shots. I'm even starting to believe that I may have left the door unlocked and the warden opened and and took the permit off the dash, then took the photos, and then reversed his action and issued the PCN. That is nearly the only other option other than the images being edited. I was with my work colleague who actually spotted the PCN under the wiper on the passenger side, and he could obviously see the permit on the dash too which rules that only other option that is that I am absolutely bonkers.