Free Traffic Legal Advice

just to add this appeal worked
received an email today from Parking Group Limited saying they're cancelling the PCN
thanks again to all concerned

N.B. this was for parking in the layby in front of the Subway sandwich shop in Hyde Park Doncaster if that helps anyone

https://imgur.com/a/rRYWpjS

Thanks
here is a link to Google Maps showing the location - https://www.google.com/maps/place/White+Rose+Gate,+Carr+House+Rd,+Doncaster+DN4+5AJ/@53.5150623,-1.1312124,17z/data=!4m15!1m8!3m7!1s0x48790dd34da34fab:0xe21bd490faf8e5f2!2sDoncaster+DN4+5FT!3b1!8m2!3d53.5149954!4d-1.1287274!16s%2Fg%2F11lspsltbw!3m5!1s0x48790dd35326ec31:0x4d114d58018ea84b!8m2!3d53.5150997!4d-1.1287346!16s%2Fg%2F1vk6yr58?entry=ttu

Albeit the Subway isn't displayed on the Google Maps image, but it's basically where that row of shops is. The driver parked up and went into the Subway, bought a sandwich, then left a few minutes later.
I'm the registered keeper of the vehicle.
Incident happened on 18/5/2024.
NOTICE TO KEEPER letter now received from PARKING GROUP THE PARKING PEOPLE
Reason for issue - Vehicle not parked within a marked bay
I'm unable to upload a picture of the letter to this forum, tried registering for an Imgur account but that doesn't work either. Could email a photo of the letter to anyone who can help me?
Don't have photos of the site, but the letter says signage is clearly displayed throughout the car park stating it is private land etc
Basically the driver parked in the layby you can see in the Google Maps image, which I think anyone would agree is a bear trap (others were parked there at the same time)
I'm trying to ascertain how feasible it would be to avoid this charge, how much work/aggro it would take, how long it might take, if anyone could give me an idea please?
Many thanks