According to GSV, Khartoum is a Permit Parking Area for permit holders C, 'except in signed bays'.
So, any marked bay will NOT be reserved for holders of permit C.
The car was in a marked bay which comprised one car space. The question then arises: was it signed correctly?
IMO, given that a PPA sign has already been passed then the driver was obliged to look for a sign within the bay. The sign was covered in paint and the wording could not be determined..if true.
A signed bay does not preclude that the bay was shared use thereby allowing permit holders to park. Contravention did not occur.
The CEO wasn't a cheat IMO. GSV shows what the restriction is..and it's not shared use..therefore the actual restriction was pay by phone and they sought to convey this by finding an equivalent sign. Their problem is that it's not what the restriction is, it's what's conveyed.
Frustrating for them that the sign was defaced, but c'est la vie.
As for Roman..
This is another PPA, permit holders cannot park in signed bays unless permitted by the sign. Photos show that the car was again in a bay and therefore subject to the signed restriction, in this case a clear pay by phone sign.