What's your role in this and for how long and at what frequency do you deliver food.
Scoping this, perhaps...
As the authority knows, there is a **** hostel located in **** which houses ****. To supplement the hostel's work, *** families prepare food and **** on a regular basis and given that my driving skills exceed those of my cooking, I'm designated to deliver these loads which I do regularly, almost invariably on a Saturday. Until the day in question I have parked on a yellow line without issue. On the day of the PCN I was actually delivering clothes donated by *** but could not find a convenient space other than in the parking place which I mistakenly thought was subject to the same restrictions as the yellow lines.
I now know differently.
I probably made ** trips to/from the hostel and presumably it was during one of these that the CEO issued the PCN. It has been mentioned to me that delivering might actually be allowed in these spaces but I wouldn't know. If it is, I have attached evidence of my activity and hope this is sufficient for you to cancel the PCN. Alternatively, if delivering is not allowed I would still ask you to exercise discretion.
........
The degree to which the above represents the actual facts, I don't know. But I suggest you challenge in a similar comprehensive way to give yourself the best chance.