Assume someone may have reported it but they have no right as it’s outside a driveway of a person I know and who has given permission.
Why would you assume this?
All a CEO needs is to see a car parked as yours where on the face of it it's prohibited. A complaint is not required in order to kick-start enforcement.
The exemption upon which you would be relying is this:
3)The second exception is where the vehicle is parked outside residential premises by or with the consent (but not consent given for reward) of the occupier of the premises.
This exception does not apply in the case of a shared driveway.
https://www.legislation.gov.uk/ukpga/2004/18/section/86It doesn't look like a shared driveway, therefore you would be exempt if you had the 'consent (but not consent given for reward) of the occupier of the premises.'
The term is 'occupier'. Whether someone is an 'occupier' is a matter of fact. When you submit your reps, what could you provide e.g. a written statement from them having given you permission, something proving that they are the occupier, perhaps a rental agreement/council tax statement etc?