Thanks for your guidance.
Based on your advice, I have removed references to the driver, Uber trip, signage, barrier and grace period, and have drafted the appeal as registered keeper only.
Please see my draft below before I submit it to NCP:
Dear NCP,
PCN Reference: BIA101422853
Vehicle Registration: AK17EWS
I am the registered keeper of the vehicle and I dispute liability for this Parking Charge Notice.
I decline to identify the driver.
The alleged contravention occurred at Birmingham Airport Premium Set Down. Birmingham Airport is subject to airport byelaws and is therefore land under statutory control. As such, it is not “relevant land” for the purposes of Schedule 4 of the Protection of Freedoms Act 2012.
As the driver has not been identified, and as there is no lawful route to transfer liability to me as the registered keeper, NCP cannot hold me liable for this charge.
Please cancel the PCN.
If you refuse to cancel it, please issue a POPLA verification code and provide a full explanation of your legal basis for pursuing the registered keeper despite the land being subject to airport byelaws.
Yours faithfully,