All pages of the PCN pl.
If you couldn't see the markings then IMO you shouldn't be driving!! Sorry, but they are clear as the photo shows, so let's not even go there because IMO it smacks of desperation and reflects upon you, not the council who couldn't make the wording any larger.
IMO, you need to look at other aspects e.g. PCN-specific wording compared and contrasted with their website,, whether a prescribed traffic sign was displayed clearly, whether de minimis might apply etc.,