Loading, caught on camera. It was at 730pm it was dark and raining. The point it there were no kerb blips. Surely for this PCN to be valid there NEEDS to be kerb blips?

I recently received a Penalty Charge Notice (PCN) for alleged parking contravention (02) Parked or loading/unloading in a restricted street where waiting and loading/unloading restrictions are in force. I visited the site and found no kerb blips which I understand are required for this contravention to be valid and penalty enforceable. I have made representations to the London Borough of Hounslow and expect my PCN to be cancelled. I am looking for ways to compel the council to suspend issuing these PCNs till necessary corrections are made to the road markings and also to repay penalties collected in the recent past. Any advice would be much appreciated.