Those could equally be bird poo markings, they're not bay markings in any meaningful sense and they're definitely nowhere near substantially compliant. Here's a draft representation:
Dear Royal Borough of Kingston upon Thames,
I challenge liability because the alleged contravention did not occur. The photos taken by the civil enforcement officer clearly show that there are no visible bay markings, let alone substantially compliant bay markings. It follows that the contravention did not occur and the PCN must be cancelled.
Yours faithfully,
The council might reject but I think there's strong grounds to take this all the way to the tribunal, the markings should have been repainted years ago.