Total period of parking is not shown on the NtK which makes the NtK non-compliant with PoFA - as such liability cannot be transferred to the keeper under PoFA.
Time on site is less than the allowable consideration period so (even if the driver were to be identified) there is no contract with the parking company as the driver can claim, "I looked at the terms and conditions and, after due consideration, I decided to leave." - meaning contract was ever accepted.
Worth noting that lots of these places now have specific cameras covering each disabled bay with the intention of catching people who either don't display badges or people who display but don't realise that they still have to register their reg on the tablet system inside the venue in question.