It's not an appeal at this stage, instead the driver and later the registered keeper may make representations to the council.
At present, all I can see as arguable is the condition of the kerb blips which if not found to be substantially compliant might lead to grounds of 'contravention did not occur' succeeding.
IMO, it's a long shot because the length of restricted marking is barely more than a car's length and there's a 'No loading..' sign clearly visible.
Wait for others.